Extract game engine as separate artifact

73 files changed, 2 insertions, 3800 deletions

diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/Game.java b/backend/src/main/java/org/luxons/sevenwonders/game/Game.java
deleted file mode 100644
index ed11913b..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/Game.java
+++ /dev/null
@@ -1,232 +0,0 @@
-package org.luxons.sevenwonders.game;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.api.Action;
-import org.luxons.sevenwonders.game.api.HandCard;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.PlayerTurnInfo;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.game.cards.Decks;
-import org.luxons.sevenwonders.game.cards.Hands;
-import org.luxons.sevenwonders.game.effects.SpecialAbility;
-import org.luxons.sevenwonders.game.moves.InvalidMoveException;
-import org.luxons.sevenwonders.game.moves.Move;
-import org.luxons.sevenwonders.game.scoring.ScoreBoard;
-
-public class Game {
-
-    private static final int LAST_AGE = 3;
-
-    private final long id;
-
-    private final Settings settings;
-
-    private final int nbPlayers;
-
-    private final Table table;
-
-    private final Decks decks;
-
-    private final List<Card> discardedCards;
-
-    private final Map<Integer, Move> preparedMoves;
-
-    private Map<Integer, PlayerTurnInfo> currentTurnInfo;
-
-    private Hands hands;
-
-    public Game(long id, Settings settings, int nbPlayers, List<Board> boards, Decks decks) {
-        this.id = id;
-        this.settings = settings;
-        this.nbPlayers = nbPlayers;
-        this.table = new Table(boards);
-        this.decks = decks;
-        this.discardedCards = new ArrayList<>();
-        this.currentTurnInfo = new HashMap<>();
-        this.preparedMoves = new HashMap<>();
-        startNewAge();
-    }
-
-    public long getId() {
-        return id;
-    }
-
-    public Settings getSettings() {
-        return settings;
-    }
-
-    private void startNewAge() {
-        table.increaseCurrentAge();
-        hands = decks.deal(table.getCurrentAge(), table.getNbPlayers());
-        startNewTurn();
-    }
-
-    private void startNewTurn() {
-        currentTurnInfo.clear();
-        for (int i = 0; i < nbPlayers; i++) {
-            currentTurnInfo.put(i, createPlayerTurnInfo(i));
-        }
-    }
-
-    private PlayerTurnInfo createPlayerTurnInfo(int playerIndex) {
-        PlayerTurnInfo pti = new PlayerTurnInfo(playerIndex, table);
-        List<HandCard> hand = hands.createHand(table, playerIndex);
-        pti.setHand(hand);
-        Action action = determineAction(hand, table.getBoard(playerIndex));
-        pti.setAction(action);
-        pti.setMessage(action.getMessage());
-        if (action == Action.PICK_NEIGHBOR_GUILD) {
-            pti.setNeighbourGuildCards(table.getNeighbourGuildCards(playerIndex));
-        }
-        return pti;
-    }
-
-    public Collection<PlayerTurnInfo> getCurrentTurnInfo() {
-        return currentTurnInfo.values();
-    }
-
-    private Action determineAction(List<HandCard> hand, Board board) {
-        if (endOfGameReached() && board.hasSpecial(SpecialAbility.COPY_GUILD)) {
-            return Action.PICK_NEIGHBOR_GUILD;
-        } else if (hand.size() == 1 && board.hasSpecial(SpecialAbility.PLAY_LAST_CARD)) {
-            return Action.PLAY_LAST;
-        } else if (hand.size() == 2 && board.hasSpecial(SpecialAbility.PLAY_LAST_CARD)) {
-            return Action.PLAY_2;
-        } else if (hand.isEmpty()) {
-            return Action.WAIT;
-        } else {
-            return Action.PLAY;
-        }
-    }
-
-    public CardBack prepareMove(int playerIndex, PlayerMove playerMove) throws InvalidMoveException {
-        Card card = decks.getCard(playerMove.getCardName());
-        Move move = playerMove.getType().resolve(playerIndex, card, playerMove);
-        validate(move);
-        preparedMoves.put(playerIndex, move);
-        return card.getBack();
-    }
-
-    private void validate(Move move) throws InvalidMoveException {
-        List<Card> hand = hands.get(move.getPlayerIndex());
-        move.validate(table, hand);
-    }
-
-    public boolean allPlayersPreparedTheirMove() {
-        long nbExpectedMoves = currentTurnInfo.values().stream().filter(pti -> pti.getAction() != Action.WAIT).count();
-        return preparedMoves.size() == nbExpectedMoves;
-    }
-
-    public Table playTurn() {
-        makeMoves();
-        if (endOfAgeReached()) {
-            executeEndOfAgeEvents();
-            if (!endOfGameReached()) {
-                startNewAge();
-            }
-        } else {
-            rotateHandsIfRelevant();
-            startNewTurn();
-        }
-        return table;
-    }
-
-    private void rotateHandsIfRelevant() {
-        // we don't rotate hands if some player can play his last card (with the special ability)
-        if (!hands.maxOneCardRemains()) {
-            hands.rotate(table.getHandRotationDirection());
-        }
-    }
-
-    private void makeMoves() {
-        List<Move> playedMoves = mapToList(preparedMoves);
-
-        // all cards from this turn need to be placed before executing any effect
-        // because effects depending on played cards need to take the ones from the current turn into account too
-        placePreparedCards(playedMoves);
-
-        // same goes for the discarded cards during the last turn, which should be available for special actions
-        if (hands.maxOneCardRemains()) {
-            discardLastCardsOfHands();
-        }
-
-        activatePlayedCards(playedMoves);
-
-        table.setLastPlayedMoves(playedMoves);
-        preparedMoves.clear();
-    }
-
-    private static List<Move> mapToList(Map<Integer, Move> movesPerPlayer) {
-        List<Move> moves = new ArrayList<>(movesPerPlayer.size());
-        for (int p = 0; p < movesPerPlayer.size(); p++) {
-            Move move = movesPerPlayer.get(p);
-            if (move == null) {
-                throw new MissingPreparedMoveException(p);
-            }
-            moves.add(move);
-        }
-        return moves;
-    }
-
-    private void placePreparedCards(List<Move> playedMoves) {
-        playedMoves.forEach(move -> {
-            move.place(table, discardedCards, settings);
-            removeFromHand(move.getPlayerIndex(), move.getCard());
-        });
-    }
-
-    private void discardLastCardsOfHands() {
-        for (int i = 0; i < nbPlayers; i++) {
-            Board board = table.getBoard(i);
-            if (!board.hasSpecial(SpecialAbility.PLAY_LAST_CARD)) {
-                discardHand(i);
-            }
-        }
-    }
-
-    private void discardHand(int playerIndex) {
-        List<Card> hand = hands.get(playerIndex);
-        discardedCards.addAll(hand);
-        hand.clear();
-    }
-
-    private void removeFromHand(int playerIndex, Card card) {
-        hands.get(playerIndex).remove(card);
-    }
-
-    private void activatePlayedCards(List<Move> playedMoves) {
-        playedMoves.forEach(move -> move.activate(table, discardedCards, settings));
-    }
-
-    private boolean endOfAgeReached() {
-        return hands.isEmpty();
-    }
-
-    private void executeEndOfAgeEvents() {
-        table.resolveMilitaryConflicts();
-    }
-
-    private boolean endOfGameReached() {
-        return endOfAgeReached() && table.getCurrentAge() == LAST_AGE;
-    }
-
-    public ScoreBoard computeScore() {
-        ScoreBoard scoreBoard = new ScoreBoard();
-        table.getBoards().stream().map(b -> b.computePoints(table)).forEach(scoreBoard::add);
-        return scoreBoard;
-    }
-
-    private static class MissingPreparedMoveException extends IllegalStateException {
-        MissingPreparedMoveException(int playerIndex) {
-            super("Player " + playerIndex + " is not ready to play");
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/Settings.java b/backend/src/main/java/org/luxons/sevenwonders/game/Settings.java
deleted file mode 100644
index f05b0b01..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/Settings.java
+++ /dev/null
@@ -1,93 +0,0 @@
-package org.luxons.sevenwonders.game;
-
-import java.util.Map;
-import java.util.Random;
-
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.game.data.definitions.WonderSide;
-import org.luxons.sevenwonders.game.data.definitions.WonderSidePickMethod;
-
-public class Settings {
-
-    private final Random random;
-
-    private final int timeLimitInSeconds;
-
-    private final int nbPlayers;
-
-    private final int initialGold;
-
-    private final int discardedCardGold;
-
-    private final int defaultTradingCost;
-
-    private final int pointsPer3Gold;
-
-    private final WonderSidePickMethod wonderSidePickMethod;
-
-    private WonderSide lastPickedSide = null;
-
-    private final int lostPointsPerDefeat;
-
-    private final Map<Integer, Integer> wonPointsPerVictoryPerAge;
-
-    public Settings(int nbPlayers) {
-        this(nbPlayers, new CustomizableSettings());
-    }
-
-    public Settings(int nbPlayers, CustomizableSettings customSettings) {
-        long seed = customSettings.getRandomSeedForTests();
-        this.random = seed > 0 ? new Random(seed) : new Random();
-        this.timeLimitInSeconds = customSettings.getTimeLimitInSeconds();
-        this.nbPlayers = nbPlayers;
-        this.initialGold = customSettings.getInitialGold();
-        this.discardedCardGold = customSettings.getDiscardedCardGold();
-        this.defaultTradingCost = customSettings.getDefaultTradingCost();
-        this.pointsPer3Gold = customSettings.getPointsPer3Gold();
-        this.wonderSidePickMethod = customSettings.getWonderSidePickMethod();
-        this.lostPointsPerDefeat = customSettings.getLostPointsPerDefeat();
-        this.wonPointsPerVictoryPerAge = customSettings.getWonPointsPerVictoryPerAge();
-    }
-
-    public Random getRandom() {
-        return random;
-    }
-
-    public int getTimeLimitInSeconds() {
-        return timeLimitInSeconds;
-    }
-
-    public int getNbPlayers() {
-        return nbPlayers;
-    }
-
-    public int getInitialGold() {
-        return initialGold;
-    }
-
-    public int getDiscardedCardGold() {
-        return discardedCardGold;
-    }
-
-    public int getDefaultTradingCost() {
-        return defaultTradingCost;
-    }
-
-    public int getPointsPer3Gold() {
-        return pointsPer3Gold;
-    }
-
-    public WonderSide pickWonderSide() {
-        WonderSide newSide = wonderSidePickMethod.pickSide(getRandom(), lastPickedSide);
-        lastPickedSide = newSide;
-        return newSide;
-    }
-
-    public int getLostPointsPerDefeat() {
-        return lostPointsPerDefeat;
-    }
-
-    public Map<Integer, Integer> getWonPointsPerVictoryPerAge() {
-        return wonPointsPerVictoryPerAge;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/Action.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/Action.java
deleted file mode 100644
index 88e392f9..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/Action.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package org.luxons.sevenwonders.game.api;
-
-public enum Action {
-    PLAY("Pick the card you want to play or discard."),
-    PLAY_2("Pick the first card you want to play or discard. Note that you have the ability to play these 2 last cards."
-            + " You will choose how to play the last one during your next turn."),
-    PLAY_LAST("You have the special ability to play your last card. Choose how you want to play it."),
-    PICK_NEIGHBOR_GUILD("Choose a Guild card (purple) that you want to copy from one of your neighbours."),
-    WAIT("Please wait for other players to perform extra actions.");
-
-    private final String message;
-
-    Action(String message) {
-        this.message = message;
-    }
-
-    public String getMessage() {
-        return message;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/CustomizableSettings.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/CustomizableSettings.java
deleted file mode 100644
index 2cbf8727..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/CustomizableSettings.java
+++ /dev/null
@@ -1,128 +0,0 @@
-package org.luxons.sevenwonders.game.api;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.data.definitions.WonderSidePickMethod;
-
-public class CustomizableSettings {
-
-    private long randomSeedForTests = -1;
-
-    private int timeLimitInSeconds = 45;
-
-    private WonderSidePickMethod wonderSidePickMethod = WonderSidePickMethod.EACH_RANDOM;
-
-    private int initialGold = 3;
-
-    private int discardedCardGold = 3;
-
-    private int defaultTradingCost = 2;
-
-    private int pointsPer3Gold = 1;
-
-    private int lostPointsPerDefeat = 1;
-
-    private Map<Integer, Integer> wonPointsPerVictoryPerAge = new HashMap<>();
-
-    public CustomizableSettings() {
-        wonPointsPerVictoryPerAge.put(1, 1);
-        wonPointsPerVictoryPerAge.put(2, 3);
-        wonPointsPerVictoryPerAge.put(3, 5);
-    }
-
-    public long getRandomSeedForTests() {
-        return randomSeedForTests;
-    }
-
-    public void setRandomSeedForTests(long randomSeedForTests) {
-        this.randomSeedForTests = randomSeedForTests;
-    }
-
-    public int getTimeLimitInSeconds() {
-        return timeLimitInSeconds;
-    }
-
-    public void setTimeLimitInSeconds(int timeLimitInSeconds) {
-        this.timeLimitInSeconds = timeLimitInSeconds;
-    }
-
-    public int getInitialGold() {
-        return initialGold;
-    }
-
-    public void setInitialGold(int initialGold) {
-        this.initialGold = initialGold;
-    }
-
-    public int getDiscardedCardGold() {
-        return discardedCardGold;
-    }
-
-    public void setDiscardedCardGold(int discardedCardGold) {
-        this.discardedCardGold = discardedCardGold;
-    }
-
-    public int getDefaultTradingCost() {
-        return defaultTradingCost;
-    }
-
-    public void setDefaultTradingCost(int defaultTradingCost) {
-        this.defaultTradingCost = defaultTradingCost;
-    }
-
-    public int getPointsPer3Gold() {
-        return pointsPer3Gold;
-    }
-
-    public void setPointsPer3Gold(int pointsPer3Gold) {
-        this.pointsPer3Gold = pointsPer3Gold;
-    }
-
-    public WonderSidePickMethod getWonderSidePickMethod() {
-        return wonderSidePickMethod;
-    }
-
-    public void setWonderSidePickMethod(WonderSidePickMethod wonderSidePickMethod) {
-        this.wonderSidePickMethod = wonderSidePickMethod;
-    }
-
-    public int getLostPointsPerDefeat() {
-        return lostPointsPerDefeat;
-    }
-
-    public void setLostPointsPerDefeat(int lostPointsPerDefeat) {
-        this.lostPointsPerDefeat = lostPointsPerDefeat;
-    }
-
-    public Map<Integer, Integer> getWonPointsPerVictoryPerAge() {
-        return wonPointsPerVictoryPerAge;
-    }
-
-    public void setWonPointsPerVictoryPerAge(Map<Integer, Integer> wonPointsPerVictoryPerAge) {
-        this.wonPointsPerVictoryPerAge = wonPointsPerVictoryPerAge;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        CustomizableSettings that = (CustomizableSettings) o;
-        return randomSeedForTests == that.randomSeedForTests && timeLimitInSeconds == that.timeLimitInSeconds
-                && initialGold == that.initialGold && discardedCardGold == that.discardedCardGold
-                && defaultTradingCost == that.defaultTradingCost && pointsPer3Gold == that.pointsPer3Gold
-                && lostPointsPerDefeat == that.lostPointsPerDefeat && wonderSidePickMethod == that.wonderSidePickMethod
-                && Objects.equals(wonPointsPerVictoryPerAge, that.wonPointsPerVictoryPerAge);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(randomSeedForTests, timeLimitInSeconds, wonderSidePickMethod, initialGold,
-                discardedCardGold, defaultTradingCost, pointsPer3Gold, lostPointsPerDefeat, wonPointsPerVictoryPerAge);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/HandCard.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/HandCard.java
deleted file mode 100644
index a97679c2..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/HandCard.java
+++ /dev/null
@@ -1,49 +0,0 @@
-package org.luxons.sevenwonders.game.api;
-
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-
-/**
- * A card with contextual information relative to the hand it is sitting in. The extra information is especially useful
- * because it frees the client from a painful business logic implementation.
- */
-public class HandCard {
-
-    private final Card card;
-
-    private final boolean chainable;
-
-    private final boolean free;
-
-    private final boolean playable;
-
-    public HandCard(Card card, Table table, int playerIndex) {
-        Board board = table.getBoard(playerIndex);
-        this.card = card;
-        this.chainable = card.isChainableOn(board);
-        this.free = card.isFreeFor(board);
-        this.playable = card.isPlayable(table, playerIndex);
-    }
-
-    public Card getCard() {
-        return card;
-    }
-
-    public boolean isChainable() {
-        return chainable;
-    }
-
-    public boolean isFree() {
-        return free;
-    }
-
-    public boolean isPlayable() {
-        return playable;
-    }
-
-    @Override
-    public String toString() {
-        return "HandCard{" + "card=" + card + ", chainable=" + chainable + ", free=" + free + ", playable=" + playable
-                + '}';
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java
deleted file mode 100644
index 179656cb..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerMove.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package org.luxons.sevenwonders.game.api;
-
-import java.util.ArrayList;
-import java.util.List;
-import javax.validation.constraints.NotNull;
-
-import org.luxons.sevenwonders.game.moves.MoveType;
-import org.luxons.sevenwonders.game.resources.BoughtResources;
-
-public class PlayerMove {
-
-    @NotNull
-    private MoveType type;
-
-    @NotNull
-    private String cardName;
-
-    private List<BoughtResources> boughtResources = new ArrayList<>();
-
-    public MoveType getType() {
-        return type;
-    }
-
-    public void setType(MoveType type) {
-        this.type = type;
-    }
-
-    public String getCardName() {
-        return cardName;
-    }
-
-    public void setCardName(String cardName) {
-        this.cardName = cardName;
-    }
-
-    public List<BoughtResources> getBoughtResources() {
-        return boughtResources;
-    }
-
-    public void setBoughtResources(List<BoughtResources> boughtResources) {
-        this.boughtResources = boughtResources;
-    }
-
-    @Override
-    public String toString() {
-        return type + " '" + cardName + '\'';
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerTurnInfo.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerTurnInfo.java
deleted file mode 100644
index 3d92d40b..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/PlayerTurnInfo.java
+++ /dev/null
@@ -1,77 +0,0 @@
-package org.luxons.sevenwonders.game.api;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.cards.Card;
-
-public class PlayerTurnInfo {
-
-    private final int playerIndex;
-
-    private final Table table;
-
-    private final int currentAge;
-
-    private Action action;
-
-    private List<HandCard> hand;
-
-    private List<Card> neighbourGuildCards;
-
-    private String message;
-
-    public PlayerTurnInfo(int playerIndex, Table table) {
-        this.playerIndex = playerIndex;
-        this.table = table;
-        this.currentAge = table.getCurrentAge();
-    }
-
-    public int getPlayerIndex() {
-        return playerIndex;
-    }
-
-    public Table getTable() {
-        return table;
-    }
-
-    public int getCurrentAge() {
-        return currentAge;
-    }
-
-    public List<HandCard> getHand() {
-        return hand;
-    }
-
-    public void setHand(List<HandCard> hand) {
-        this.hand = hand;
-    }
-
-    public List<Card> getNeighbourGuildCards() {
-        return neighbourGuildCards;
-    }
-
-    public void setNeighbourGuildCards(List<Card> neighbourGuildCards) {
-        this.neighbourGuildCards = neighbourGuildCards;
-    }
-
-    public Action getAction() {
-        return action;
-    }
-
-    public void setAction(Action action) {
-        this.action = action;
-    }
-
-    public String getMessage() {
-        return message;
-    }
-
-    public void setMessage(String message) {
-        this.message = message;
-    }
-
-    @Override
-    public String toString() {
-        return "PlayerTurnInfo{" + "playerIndex=" + playerIndex + ", action=" + action + ", hand=" + hand + '}';
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/api/Table.java b/backend/src/main/java/org/luxons/sevenwonders/game/api/Table.java
deleted file mode 100644
index 82f9055a..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/api/Table.java
+++ /dev/null
@@ -1,106 +0,0 @@
-package org.luxons.sevenwonders.game.api;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.boards.RelativeBoardPosition;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.Color;
-import org.luxons.sevenwonders.game.cards.HandRotationDirection;
-import org.luxons.sevenwonders.game.moves.Move;
-import org.luxons.sevenwonders.game.resources.Provider;
-
-/**
- * The table contains what is visible by all the players in the game: the boards and their played cards, and the
- * players' information.
- */
-public class Table {
-
-    private final int nbPlayers;
-
-    private final List<Board> boards;
-
-    private int currentAge = 0;
-
-    private List<Move> lastPlayedMoves;
-
-    public Table(List<Board> boards) {
-        this.nbPlayers = boards.size();
-        this.boards = boards;
-    }
-
-    public int getNbPlayers() {
-        return nbPlayers;
-    }
-
-    public List<Board> getBoards() {
-        return boards;
-    }
-
-    public Board getBoard(int playerIndex) {
-        return boards.get(playerIndex);
-    }
-
-    public Board getBoard(int playerIndex, RelativeBoardPosition position) {
-        return boards.get(position.getIndexFrom(playerIndex, nbPlayers));
-    }
-
-    public List<Move> getLastPlayedMoves() {
-        return lastPlayedMoves;
-    }
-
-    public void setLastPlayedMoves(List<Move> lastPlayedMoves) {
-        this.lastPlayedMoves = lastPlayedMoves;
-    }
-
-    public int getCurrentAge() {
-        return currentAge;
-    }
-
-    public void increaseCurrentAge() {
-        this.currentAge++;
-    }
-
-    public HandRotationDirection getHandRotationDirection() {
-        return HandRotationDirection.forAge(currentAge);
-    }
-
-    public void resolveMilitaryConflicts() {
-        for (int i = 0; i < nbPlayers; i++) {
-            Board board1 = getBoard(i);
-            Board board2 = getBoard((i + 1) % nbPlayers);
-            resolveConflict(board1, board2, currentAge);
-        }
-    }
-
-    private static void resolveConflict(Board board1, Board board2, int age) {
-        int shields1 = board1.getMilitary().getNbShields();
-        int shields2 = board2.getMilitary().getNbShields();
-        if (shields1 < shields2) {
-            board2.getMilitary().victory(age);
-            board1.getMilitary().defeat();
-        } else if (shields1 > shields2) {
-            board1.getMilitary().victory(age);
-            board2.getMilitary().defeat();
-        }
-    }
-
-    public List<Card> getNeighbourGuildCards(int playerIndex) {
-        return getNeighbourBoards(playerIndex).stream()
-                                              .map(Board::getPlayedCards)
-                                              .flatMap(List::stream)
-                                              .filter(c -> c.getColor() == Color.PURPLE)
-                                              .collect(Collectors.toList());
-    }
-
-    private List<Board> getNeighbourBoards(int playerIndex) {
-        Provider[] providers = Provider.values();
-        List<Board> boards = new ArrayList<>(providers.length);
-        for (Provider provider : providers) {
-            boards.add(getBoard(playerIndex, provider.getBoardPosition()));
-        }
-        return boards;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
deleted file mode 100644
index a59bbfae..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Board.java
+++ /dev/null
@@ -1,175 +0,0 @@
-package org.luxons.sevenwonders.game.boards;
-
-import java.util.ArrayList;
-import java.util.EnumSet;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.Color;
-import org.luxons.sevenwonders.game.effects.SpecialAbility;
-import org.luxons.sevenwonders.game.resources.Production;
-import org.luxons.sevenwonders.game.resources.TradingRules;
-import org.luxons.sevenwonders.game.scoring.PlayerScore;
-import org.luxons.sevenwonders.game.scoring.ScoreCategory;
-import org.luxons.sevenwonders.game.wonders.Wonder;
-
-public class Board {
-
-    private final Wonder wonder;
-
-    private final int playerIndex;
-
-    private final List<Card> playedCards = new ArrayList<>();
-
-    private final Production production = new Production();
-
-    private final Production publicProduction = new Production();
-
-    private final Science science = new Science();
-
-    private final TradingRules tradingRules;
-
-    private final Military military;
-
-    private final Set<SpecialAbility> specialAbilities = EnumSet.noneOf(SpecialAbility.class);
-
-    private Map<Integer, Boolean> consumedFreeCards = new HashMap<>();
-
-    private Card copiedGuild;
-
-    private int gold;
-
-    private int pointsPer3Gold;
-
-    public Board(Wonder wonder, int playerIndex, Settings settings) {
-        this.wonder = wonder;
-        this.playerIndex = playerIndex;
-        this.gold = settings.getInitialGold();
-        this.tradingRules = new TradingRules(settings.getDefaultTradingCost());
-        this.military = new Military(settings.getLostPointsPerDefeat(), settings.getWonPointsPerVictoryPerAge());
-        this.pointsPer3Gold = settings.getPointsPer3Gold();
-        this.production.addFixedResource(wonder.getInitialResource(), 1);
-        this.publicProduction.addFixedResource(wonder.getInitialResource(), 1);
-    }
-
-    public Wonder getWonder() {
-        return wonder;
-    }
-
-    public List<Card> getPlayedCards() {
-        return playedCards;
-    }
-
-    public void addCard(Card card) {
-        playedCards.add(card);
-    }
-
-    int getNbCardsOfColor(List<Color> colorFilter) {
-        return (int) playedCards.stream().filter(c -> colorFilter.contains(c.getColor())).count();
-    }
-
-    public boolean isPlayed(String cardName) {
-        return getPlayedCards().stream().map(Card::getName).filter(name -> name.equals(cardName)).count() > 0;
-    }
-
-    public Production getProduction() {
-        return production;
-    }
-
-    public Production getPublicProduction() {
-        return publicProduction;
-    }
-
-    public TradingRules getTradingRules() {
-        return tradingRules;
-    }
-
-    public Science getScience() {
-        return science;
-    }
-
-    public int getGold() {
-        return gold;
-    }
-
-    public void setGold(int amount) {
-        this.gold = amount;
-    }
-
-    public void addGold(int amount) {
-        this.gold += amount;
-    }
-
-    public void removeGold(int amount) {
-        if (gold < amount) {
-            throw new InsufficientFundsException(gold, amount);
-        }
-        this.gold -= amount;
-    }
-
-    public Military getMilitary() {
-        return military;
-    }
-
-    public void addSpecial(SpecialAbility specialAbility) {
-        specialAbilities.add(specialAbility);
-    }
-
-    public boolean hasSpecial(SpecialAbility specialAbility) {
-        return specialAbilities.contains(specialAbility);
-    }
-
-    public boolean canPlayFreeCard(int age) {
-        return hasSpecial(SpecialAbility.ONE_FREE_PER_AGE) && !consumedFreeCards.getOrDefault(age, false);
-    }
-
-    public void consumeFreeCard(int age) {
-        consumedFreeCards.put(age, true);
-    }
-
-    public void setCopiedGuild(Card copiedGuild) {
-        if (copiedGuild.getColor() != Color.PURPLE) {
-            throw new IllegalArgumentException("The given card '" + copiedGuild + "' is not a Guild card");
-        }
-        this.copiedGuild = copiedGuild;
-    }
-
-    public Card getCopiedGuild() {
-        return copiedGuild;
-    }
-
-    public PlayerScore computePoints(Table table) {
-        PlayerScore score = new PlayerScore(gold);
-        score.put(ScoreCategory.CIVIL, computePointsForCards(table, Color.BLUE));
-        score.put(ScoreCategory.MILITARY, military.getTotalPoints());
-        score.put(ScoreCategory.SCIENCE, science.computePoints());
-        score.put(ScoreCategory.TRADE, computePointsForCards(table, Color.YELLOW));
-        score.put(ScoreCategory.GUILD, computePointsForCards(table, Color.PURPLE));
-        score.put(ScoreCategory.WONDER, wonder.computePoints(table, playerIndex));
-        score.put(ScoreCategory.GOLD, computeGoldPoints());
-        return score;
-    }
-
-    private int computePointsForCards(Table table, Color color) {
-        return playedCards.stream()
-                          .filter(c -> c.getColor() == color)
-                          .flatMap(c -> c.getEffects().stream())
-                          .mapToInt(e -> e.computePoints(table, playerIndex))
-                          .sum();
-    }
-
-    private int computeGoldPoints() {
-        return gold / 3 * pointsPer3Gold;
-    }
-
-    static class InsufficientFundsException extends RuntimeException {
-        InsufficientFundsException(int current, int required) {
-            super(String.format("Current balance is %d gold, but %d are required", current, required));
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/BoardElementType.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/BoardElementType.java
deleted file mode 100644
index e50f4ea0..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/BoardElementType.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.luxons.sevenwonders.game.boards;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.cards.Color;
-
-public enum BoardElementType {
-    CARD {
-        @Override
-        public int getElementCount(Board board, List<Color> colors) {
-            return board.getNbCardsOfColor(colors);
-        }
-    },
-    BUILT_WONDER_STAGES {
-        @Override
-        public int getElementCount(Board board, List<Color> colors) {
-            return board.getWonder().getNbBuiltStages();
-        }
-    },
-    DEFEAT_TOKEN {
-        @Override
-        public int getElementCount(Board board, List<Color> colors) {
-            return board.getMilitary().getNbDefeatTokens();
-        }
-    };
-
-    public abstract int getElementCount(Board board, List<Color> colors);
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Military.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/Military.java
deleted file mode 100644
index e5cc7033..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Military.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package org.luxons.sevenwonders.game.boards;
-
-import java.util.Map;
-
-public class Military {
-
-    private final int lostPointsPerDefeat;
-
-    private final Map<Integer, Integer> wonPointsPerVictoryPerAge;
-
-    private int nbShields = 0;
-
-    private int totalPoints = 0;
-
-    private int nbDefeatTokens = 0;
-
-    Military(int lostPointsPerDefeat, Map<Integer, Integer> wonPointsPerVictoryPerAge) {
-        this.lostPointsPerDefeat = lostPointsPerDefeat;
-        this.wonPointsPerVictoryPerAge = wonPointsPerVictoryPerAge;
-    }
-
-    public int getNbShields() {
-        return nbShields;
-    }
-
-    public void addShields(int nbShields) {
-        this.nbShields += nbShields;
-    }
-
-    public int getTotalPoints() {
-        return totalPoints;
-    }
-
-    public int getNbDefeatTokens() {
-        return nbDefeatTokens;
-    }
-
-    public void victory(int age) {
-        Integer wonPoints = wonPointsPerVictoryPerAge.get(age);
-        if (wonPoints == null) {
-            throw new UnknownAgeException(age);
-        }
-        totalPoints += wonPoints;
-    }
-
-    public void defeat() {
-        totalPoints -= lostPointsPerDefeat;
-        nbDefeatTokens++;
-    }
-
-    static final class UnknownAgeException extends IllegalArgumentException {
-        UnknownAgeException(int unknownAge) {
-            super(String.valueOf(unknownAge));
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/RelativeBoardPosition.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/RelativeBoardPosition.java
deleted file mode 100644
index 16b2f3a9..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/RelativeBoardPosition.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.luxons.sevenwonders.game.boards;
-
-public enum RelativeBoardPosition {
-    LEFT {
-        @Override
-        public int getIndexFrom(int playerIndex, int nbPlayers) {
-            return wrapIndex(playerIndex - 1, nbPlayers);
-        }
-    },
-    SELF {
-        @Override
-        public int getIndexFrom(int playerIndex, int nbPlayers) {
-            return playerIndex;
-        }
-    },
-    RIGHT {
-        @Override
-        public int getIndexFrom(int playerIndex, int nbPlayers) {
-            return wrapIndex(playerIndex + 1, nbPlayers);
-        }
-    };
-
-    public abstract int getIndexFrom(int playerIndex, int nbPlayers);
-
-    int wrapIndex(int index, int nbPlayers) {
-        return Math.floorMod(index, nbPlayers);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Science.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/Science.java
deleted file mode 100644
index 34928bcc..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/Science.java
+++ /dev/null
@@ -1,65 +0,0 @@
-package org.luxons.sevenwonders.game.boards;
-
-import java.util.Arrays;
-import java.util.EnumMap;
-import java.util.Map;
-
-public class Science {
-
-    private Map<ScienceType, Integer> quantities = new EnumMap<>(ScienceType.class);
-
-    private int jokers;
-
-    public void add(ScienceType type, int quantity) {
-        quantities.merge(type, quantity, (x, y) -> x + y);
-    }
-
-    public void addJoker(int quantity) {
-        jokers += quantity;
-    }
-
-    public int getJokers() {
-        return jokers;
-    }
-
-    public void addAll(Science science) {
-        science.quantities.forEach(this::add);
-        jokers += science.jokers;
-    }
-
-    public int getQuantity(ScienceType type) {
-        return quantities.getOrDefault(type, 0);
-    }
-
-    public int size() {
-        return quantities.values().stream().mapToInt(q -> q).sum() + jokers;
-    }
-
-    public int computePoints() {
-        ScienceType[] types = ScienceType.values();
-        Integer[] values = new Integer[types.length];
-        for (int i = 0; i < types.length; i++) {
-            values[i] = quantities.getOrDefault(types[i], 0);
-        }
-        return computePoints(values, jokers);
-    }
-
-    private static int computePoints(Integer[] values, int jokers) {
-        if (jokers == 0) {
-            return computePointsNoJoker(values);
-        }
-        int maxPoints = 0;
-        for (int i = 0; i < values.length; i++) {
-            values[i]++;
-            maxPoints = Math.max(maxPoints, computePoints(values, jokers - 1));
-            values[i]--;
-        }
-        return maxPoints;
-    }
-
-    private static int computePointsNoJoker(Integer[] values) {
-        int independentSquaresSum = Arrays.stream(values).mapToInt(i -> i * i).sum();
-        int nbGroupsOfAll = Arrays.stream(values).mapToInt(i -> i).min().orElse(0);
-        return independentSquaresSum + nbGroupsOfAll * 7;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java b/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java
deleted file mode 100644
index f1b14c6d..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/boards/ScienceType.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package org.luxons.sevenwonders.game.boards;
-
-public enum ScienceType {
-    COMPASS,
-    WHEEL,
-    TABLET
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java
deleted file mode 100644
index 084d19a5..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Card.java
+++ /dev/null
@@ -1,128 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-import java.util.List;
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.effects.Effect;
-import org.luxons.sevenwonders.game.resources.BoughtResources;
-
-public class Card {
-
-    private final String name;
-
-    private final Color color;
-
-    private final Requirements requirements;
-
-    private final List<Effect> effects;
-
-    private final String chainParent;
-
-    private final List<String> chainChildren;
-
-    private final String image;
-
-    private CardBack back;
-
-    public Card(String name, Color color, Requirements requirements, List<Effect> effects, String chainParent,
-            List<String> chainChildren, String image) {
-        this.name = name;
-        this.color = color;
-        this.requirements = requirements;
-        this.chainParent = chainParent;
-        this.effects = effects;
-        this.chainChildren = chainChildren;
-        this.image = image;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public Color getColor() {
-        return color;
-    }
-
-    public String getChainParent() {
-        return chainParent;
-    }
-
-    public Requirements getRequirements() {
-        return requirements;
-    }
-
-    public List<Effect> getEffects() {
-        return effects;
-    }
-
-    public List<String> getChainChildren() {
-        return chainChildren;
-    }
-
-    public String getImage() {
-        return image;
-    }
-
-    public CardBack getBack() {
-        return back;
-    }
-
-    public void setBack(CardBack back) {
-        this.back = back;
-    }
-
-    private boolean isAllowedOnBoard(Board board) {
-        return !board.isPlayed(name); // cannot play twice the same card
-    }
-
-    public boolean isChainableOn(Board board) {
-        return isAllowedOnBoard(board) && board.isPlayed(chainParent);
-    }
-
-    public boolean isFreeFor(Board board) {
-        if (!isAllowedOnBoard(board)) {
-            return false;
-        }
-        return isChainableOn(board) || (requirements.areMetWithoutNeighboursBy(board) && requirements.getGold() == 0);
-    }
-
-    public boolean isPlayable(Table table, int playerIndex) {
-        Board board = table.getBoard(playerIndex);
-        if (!isAllowedOnBoard(board)) {
-            return false;
-        }
-        return isChainableOn(board) || requirements.couldBeMetBy(table, playerIndex);
-    }
-
-    public void applyTo(Table table, int playerIndex, List<BoughtResources> boughtResources) {
-        Board playerBoard = table.getBoard(playerIndex);
-        if (!isChainableOn(playerBoard)) {
-            requirements.pay(table, playerIndex, boughtResources);
-        }
-        effects.forEach(e -> e.apply(table, playerIndex));
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        Card card = (Card) o;
-        return Objects.equals(name, card.name);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(name);
-    }
-
-    @Override
-    public String toString() {
-        return "Card{" + name + '}';
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/CardBack.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/CardBack.java
deleted file mode 100644
index f925b6c4..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/CardBack.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-public class CardBack {
-
-    private final String image;
-
-    public CardBack(String image) {
-        this.image = image;
-    }
-
-    public String getImage() {
-        return image;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java
deleted file mode 100644
index 80d06c55..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Color.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-public enum Color {
-    BROWN,
-    GREY,
-    YELLOW,
-    BLUE,
-    GREEN,
-    RED,
-    PURPLE
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Decks.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Decks.java
deleted file mode 100644
index aa2b00bf..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Decks.java
+++ /dev/null
@@ -1,65 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-public class Decks {
-
-    private Map<Integer, List<Card>> cardsPerAge = new HashMap<>();
-
-    public Decks(Map<Integer, List<Card>> cardsPerAge) {
-        this.cardsPerAge = cardsPerAge;
-    }
-
-    public Card getCard(String cardName) throws CardNotFoundException {
-        return cardsPerAge.values()
-                          .stream()
-                          .flatMap(List::stream)
-                          .filter(c -> c.getName().equals(cardName))
-                          .findAny()
-                          .orElseThrow(() -> new CardNotFoundException(cardName));
-    }
-
-    public Hands deal(int age, int nbPlayers) {
-        List<Card> deck = getDeck(age);
-        validateNbCards(deck, nbPlayers);
-        return deal(deck, nbPlayers);
-    }
-
-    private List<Card> getDeck(int age) {
-        List<Card> deck = cardsPerAge.get(age);
-        if (deck == null) {
-            throw new IllegalArgumentException("No deck found for age " + age);
-        }
-        return deck;
-    }
-
-    private void validateNbCards(List<Card> deck, int nbPlayers) {
-        if (nbPlayers == 0) {
-            throw new IllegalArgumentException("Cannot deal cards between 0 players");
-        }
-        if (deck.size() % nbPlayers != 0) {
-            throw new IllegalArgumentException(
-                    String.format("Cannot deal %d cards evenly between %d players", deck.size(), nbPlayers));
-        }
-    }
-
-    private Hands deal(List<Card> deck, int nbPlayers) {
-        Map<Integer, List<Card>> hands = new HashMap<>(nbPlayers);
-        for (int i = 0; i < nbPlayers; i++) {
-            hands.put(i, new ArrayList<>());
-        }
-        for (int i = 0; i < deck.size(); i++) {
-            hands.get(i % nbPlayers).add(deck.get(i));
-        }
-        return new Hands(hands, nbPlayers);
-    }
-
-    class CardNotFoundException extends RuntimeException {
-        CardNotFoundException(String message) {
-            super(message);
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
deleted file mode 100644
index f3902fb5..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/HandRotationDirection.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-public enum HandRotationDirection {
-    LEFT(-1),
-    RIGHT(1);
-
-    private final int indexOffset;
-
-    HandRotationDirection(int i) {
-        this.indexOffset = i;
-    }
-
-    public int getIndexOffset() {
-        return indexOffset;
-    }
-
-    public static HandRotationDirection forAge(int age) {
-        // clockwise (pass to the left) at age 1, and alternating
-        return age % 2 == 0 ? HandRotationDirection.RIGHT : HandRotationDirection.LEFT;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Hands.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Hands.java
deleted file mode 100644
index 4a8bc143..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Hands.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.api.HandCard;
-import org.luxons.sevenwonders.game.api.Table;
-
-public class Hands {
-
-    private final int nbPlayers;
-
-    private Map<Integer, List<Card>> hands;
-
-    Hands(Map<Integer, List<Card>> hands, int nbPlayers) {
-        this.hands = hands;
-        this.nbPlayers = nbPlayers;
-    }
-
-    public List<Card> get(int playerIndex) {
-        if (!hands.containsKey(playerIndex)) {
-            throw new PlayerIndexOutOfBoundsException(playerIndex);
-        }
-        return hands.get(playerIndex);
-    }
-
-    public List<HandCard> createHand(Table table, int playerIndex) {
-        return hands.get(playerIndex)
-                    .stream()
-                    .map(c -> new HandCard(c, table, playerIndex))
-                    .collect(Collectors.toList());
-    }
-
-    public Hands rotate(HandRotationDirection direction) {
-        Map<Integer, List<Card>> newHands = new HashMap<>(hands.size());
-        for (int i = 0; i < nbPlayers; i++) {
-            int newIndex = Math.floorMod(i + direction.getIndexOffset(), nbPlayers);
-            newHands.put(newIndex, hands.get(i));
-        }
-        return new Hands(newHands, nbPlayers);
-    }
-
-    public boolean isEmpty() {
-        return hands.values().stream().allMatch(List::isEmpty);
-    }
-
-    public boolean maxOneCardRemains() {
-        return hands.values().stream().mapToInt(List::size).max().orElse(0) <= 1;
-    }
-
-    public List<Card> gatherAndClear() {
-        List<Card> remainingCards = hands.values().stream().flatMap(List::stream).collect(Collectors.toList());
-        hands.clear();
-        return remainingCards;
-    }
-
-    class PlayerIndexOutOfBoundsException extends ArrayIndexOutOfBoundsException {
-        PlayerIndexOutOfBoundsException(int index) {
-            super(index);
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Requirements.java b/backend/src/main/java/org/luxons/sevenwonders/game/cards/Requirements.java
deleted file mode 100644
index 93683ff8..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/cards/Requirements.java
+++ /dev/null
@@ -1,131 +0,0 @@
-package org.luxons.sevenwonders.game.cards;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.boards.RelativeBoardPosition;
-import org.luxons.sevenwonders.game.resources.BestPriceCalculator;
-import org.luxons.sevenwonders.game.resources.BoughtResources;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-public class Requirements {
-
-    private int gold;
-
-    private Resources resources = new Resources();
-
-    public int getGold() {
-        return gold;
-    }
-
-    public void setGold(int gold) {
-        this.gold = gold;
-    }
-
-    public Resources getResources() {
-        return resources;
-    }
-
-    public void setResources(Resources resources) {
-        this.resources = resources;
-    }
-
-    /**
-     * Returns whether the given board meets these requirements on its own.
-     *
-     * @param board
-     *         the board to check
-     *
-     * @return true if the given board meets these requirements without any transaction with its neighbours
-     */
-    boolean areMetWithoutNeighboursBy(Board board) {
-        return hasRequiredGold(board) && producesRequiredResources(board);
-    }
-
-    /**
-     * Returns whether the given board meets these requirements, if the specified resources are bought from neighbours.
-     *
-     * @param board
-     *         the board to check
-     * @param boughtResources
-     *         the resources the player intends to buy
-     *
-     * @return true if the given board meets these requirements
-     */
-    public boolean areMetWithHelpBy(Board board, List<BoughtResources> boughtResources) {
-        if (!hasRequiredGold(board, boughtResources)) {
-            return false;
-        }
-        if (producesRequiredResources(board)) {
-            return true;
-        }
-        return producesRequiredResourcesWithHelp(board, boughtResources);
-    }
-
-    /**
-     * Returns whether the given player's board could meet these requirements, on its own or by buying resources to
-     * neighbours.
-     *
-     * @param table
-     *         the current game table
-     * @param playerIndex
-     *         the index of the player to check
-     *
-     * @return true if the given player's board could meet these requirements
-     */
-    boolean couldBeMetBy(Table table, int playerIndex) {
-        Board board = table.getBoard(playerIndex);
-        if (!hasRequiredGold(board)) {
-            return false;
-        }
-        if (producesRequiredResources(board)) {
-            return true;
-        }
-        return BestPriceCalculator.bestPrice(resources, table, playerIndex) <= board.getGold() - gold;
-    }
-
-    private boolean hasRequiredGold(Board board) {
-        return board.getGold() >= gold;
-    }
-
-    private boolean hasRequiredGold(Board board, List<BoughtResources> boughtResources) {
-        int resourcesPrice = board.getTradingRules().computeCost(boughtResources);
-        return board.getGold() >= gold + resourcesPrice;
-    }
-
-    private boolean producesRequiredResources(Board board) {
-        return board.getProduction().contains(resources);
-    }
-
-    private boolean producesRequiredResourcesWithHelp(Board board, List<BoughtResources> boughtResources) {
-        Resources totalBoughtResources = getTotalResources(boughtResources);
-        Resources remainingResources = this.resources.minus(totalBoughtResources);
-        return board.getProduction().contains(remainingResources);
-    }
-
-    private static Resources getTotalResources(List<BoughtResources> boughtResources) {
-        return boughtResources.stream().map(BoughtResources::getResources).reduce(new Resources(), (r1, r2) -> {
-            r1.addAll(r2);
-            return r1;
-        });
-    }
-
-    void pay(Table table, int playerIndex, List<BoughtResources> boughtResources) {
-        table.getBoard(playerIndex).removeGold(gold);
-        payBoughtResources(table, playerIndex, boughtResources);
-    }
-
-    private void payBoughtResources(Table table, int playerIndex, List<BoughtResources> boughtResourcesList) {
-        boughtResourcesList.forEach(res -> payBoughtResources(table, playerIndex, res));
-    }
-
-    private void payBoughtResources(Table table, int playerIndex, BoughtResources boughtResources) {
-        Board board = table.getBoard(playerIndex);
-        int price = board.getTradingRules().computeCost(boughtResources);
-        board.removeGold(price);
-        RelativeBoardPosition providerPosition = boughtResources.getProvider().getBoardPosition();
-        Board providerBoard = table.getBoard(playerIndex, providerPosition);
-        providerBoard.addGold(price);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinition.java
deleted file mode 100644
index 7604ca6a..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinition.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package org.luxons.sevenwonders.game.data;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Game;
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Decks;
-import org.luxons.sevenwonders.game.data.definitions.DecksDefinition;
-import org.luxons.sevenwonders.game.data.definitions.WonderDefinition;
-import org.luxons.sevenwonders.game.wonders.Wonder;
-
-public class GameDefinition {
-
-    /**
-     * This value is heavily dependent on the JSON data. Any change must be carefully thought through.
-     */
-    private static final int MIN_PLAYERS = 3;
-
-    /**
-     * This value is heavily dependent on the JSON data. Any change must be carefully thought through.
-     */
-    private static final int MAX_PLAYERS = 7;
-
-    private WonderDefinition[] wonders;
-
-    private DecksDefinition decksDefinition;
-
-    GameDefinition(WonderDefinition[] wonders, DecksDefinition decksDefinition) {
-        this.wonders = wonders;
-        this.decksDefinition = decksDefinition;
-    }
-
-    public int getMinPlayers() {
-        return MIN_PLAYERS;
-    }
-
-    public int getMaxPlayers() {
-        return MAX_PLAYERS;
-    }
-
-    public Game initGame(long id, CustomizableSettings customSettings, int nbPlayers) {
-        Settings settings = new Settings(nbPlayers, customSettings);
-        List<Board> boards = assignBoards(settings, nbPlayers);
-        Decks decks = decksDefinition.create(settings);
-        return new Game(id, settings, nbPlayers, boards, decks);
-    }
-
-    private List<Board> assignBoards(Settings settings, int nbPlayers) {
-        List<WonderDefinition> randomizedWonders = Arrays.asList(wonders);
-        Collections.shuffle(randomizedWonders, settings.getRandom());
-
-        List<Board> boards = new ArrayList<>(nbPlayers);
-        for (int i = 0; i < nbPlayers; i++) {
-            WonderDefinition def = randomizedWonders.get(i);
-            Wonder w = def.create(settings);
-            Board b = new Board(w, i, settings);
-            boards.add(b);
-        }
-        return boards;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
deleted file mode 100644
index f0da6d63..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/GameDefinitionLoader.java
+++ /dev/null
@@ -1,87 +0,0 @@
-package org.luxons.sevenwonders.game.data;
-
-import java.io.BufferedReader;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.Reader;
-import java.lang.reflect.Type;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.data.definitions.DecksDefinition;
-import org.luxons.sevenwonders.game.data.definitions.WonderDefinition;
-import org.luxons.sevenwonders.game.data.serializers.NumericEffectSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ProductionIncreaseSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ProductionSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ResourceTypeSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ResourceTypesSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ResourcesSerializer;
-import org.luxons.sevenwonders.game.data.serializers.ScienceProgressSerializer;
-import org.luxons.sevenwonders.game.effects.GoldIncrease;
-import org.luxons.sevenwonders.game.effects.MilitaryReinforcements;
-import org.luxons.sevenwonders.game.effects.ProductionIncrease;
-import org.luxons.sevenwonders.game.effects.RawPointsIncrease;
-import org.luxons.sevenwonders.game.effects.ScienceProgress;
-import org.luxons.sevenwonders.game.resources.Production;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-import org.springframework.stereotype.Component;
-
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-import com.google.gson.reflect.TypeToken;
-
-@Component
-public class GameDefinitionLoader {
-
-    private static final String BASE_PACKAGE = GameDefinitionLoader.class.getPackage().getName();
-
-    private static final String BASE_PACKAGE_PATH = '/' + BASE_PACKAGE.replace('.', '/');
-
-    private static final String CARDS_FILE = "cards.json";
-
-    private static final String WONDERS_FILE = "wonders.json";
-
-    private final GameDefinition gameDefinition;
-
-    public GameDefinitionLoader() {
-        gameDefinition = load();
-    }
-
-    public GameDefinition getGameDefinition() {
-        return gameDefinition;
-    }
-
-    private static GameDefinition load() {
-        return new GameDefinition(loadWonders(), loadDecks());
-    }
-
-    private static WonderDefinition[] loadWonders() {
-        return readJsonFile(WONDERS_FILE, WonderDefinition[].class);
-    }
-
-    private static DecksDefinition loadDecks() {
-        return readJsonFile(CARDS_FILE, DecksDefinition.class);
-    }
-
-    private static <T> T readJsonFile(String filename, Class<T> clazz) {
-        InputStream in = GameDefinitionLoader.class.getResourceAsStream(BASE_PACKAGE_PATH + '/' + filename);
-        Reader reader = new BufferedReader(new InputStreamReader(in));
-        Gson gson = createGson();
-        return gson.fromJson(reader, clazz);
-    }
-
-    private static Gson createGson() {
-        Type resourceTypeList = new TypeToken<List<ResourceType>>() {}.getType();
-        return new GsonBuilder().disableHtmlEscaping()
-                                .registerTypeAdapter(Resources.class, new ResourcesSerializer())
-                                .registerTypeAdapter(ResourceType.class, new ResourceTypeSerializer())
-                                .registerTypeAdapter(resourceTypeList, new ResourceTypesSerializer())
-                                .registerTypeAdapter(Production.class, new ProductionSerializer())
-                                .registerTypeAdapter(ProductionIncrease.class, new ProductionIncreaseSerializer())
-                                .registerTypeAdapter(MilitaryReinforcements.class, new NumericEffectSerializer())
-                                .registerTypeAdapter(RawPointsIncrease.class, new NumericEffectSerializer())
-                                .registerTypeAdapter(GoldIncrease.class, new NumericEffectSerializer())
-                                .registerTypeAdapter(ScienceProgress.class, new ScienceProgressSerializer())
-                                .create();
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/CardDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/CardDefinition.java
deleted file mode 100644
index 621bed2c..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/CardDefinition.java
+++ /dev/null
@@ -1,38 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.List;
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.Color;
-import org.luxons.sevenwonders.game.cards.Requirements;
-
-@SuppressWarnings("unused") // the fields are injected by Gson
-public class CardDefinition implements Definition<Card> {
-
-    private String name;
-
-    private Color color;
-
-    private Requirements requirements;
-
-    private EffectsDefinition effect;
-
-    private String chainParent;
-
-    private List<String> chainChildren;
-
-    private Map<Integer, Integer> countPerNbPlayer;
-
-    private String image;
-
-    @Override
-    public Card create(Settings settings) {
-        return new Card(name, color, requirements, effect.create(settings), chainParent, chainChildren, image);
-    }
-
-    Map<Integer, Integer> getCountPerNbPlayer() {
-        return countPerNbPlayer;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.java
deleted file mode 100644
index 6f97e55f..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/DecksDefinition.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.game.cards.Decks;
-
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection") // the fields are injected by Gson
-public class DecksDefinition implements Definition<Decks> {
-
-    private List<CardDefinition> age1;
-
-    private List<CardDefinition> age2;
-
-    private List<CardDefinition> age3;
-
-    private String age1Back;
-
-    private String age2Back;
-
-    private String age3Back;
-
-    private List<CardDefinition> guildCards;
-
-    @Override
-    public Decks create(Settings settings) {
-        Map<Integer, List<Card>> cardsPerAge = new HashMap<>();
-        cardsPerAge.put(1, prepareStandardDeck(age1, settings, age1Back));
-        cardsPerAge.put(2, prepareStandardDeck(age2, settings, age2Back));
-        cardsPerAge.put(3, prepareAge3Deck(settings));
-        return new Decks(cardsPerAge);
-    }
-
-    private static List<Card> prepareStandardDeck(List<CardDefinition> defs, Settings settings, String backImage) {
-        CardBack back = new CardBack(backImage);
-        List<Card> cards = createDeck(defs, settings, back);
-        Collections.shuffle(cards, settings.getRandom());
-        return cards;
-    }
-
-    private List<Card> prepareAge3Deck(Settings settings) {
-        CardBack back = new CardBack(age3Back);
-        List<Card> age3deck = createDeck(age3, settings, back);
-        age3deck.addAll(createGuildCards(settings, back));
-        Collections.shuffle(age3deck, settings.getRandom());
-        return age3deck;
-    }
-
-    private static List<Card> createDeck(List<CardDefinition> defs, Settings settings, CardBack back) {
-        List<Card> cards = new ArrayList<>();
-        for (CardDefinition def : defs) {
-            for (int i = 0; i < def.getCountPerNbPlayer().get(settings.getNbPlayers()); i++) {
-                Card card = def.create(settings);
-                card.setBack(back);
-                cards.add(card);
-            }
-        }
-        return cards;
-    }
-
-    private List<Card> createGuildCards(Settings settings, CardBack back) {
-        List<Card> guild = guildCards.stream()
-                                     .map((def) -> def.create(settings))
-                                     .peek(c -> c.setBack(back))
-                                     .collect(Collectors.toList());
-        Collections.shuffle(guild, settings.getRandom());
-        return guild.subList(0, settings.getNbPlayers() + 2);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/Definition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/Definition.java
deleted file mode 100644
index 6c6b4b19..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/Definition.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import org.luxons.sevenwonders.game.Settings;
-
-/**
- * Represents a deserialized JSON definition of some data about the game. It is settings-agnostic. An instance of
- * in-game data can be generated from this, given specific game settings.
- *
- * @param <T>
- *         the type of in-game object that can be generated from this definition
- */
-public interface Definition<T> {
-
-    /**
-     * Creates a T object from the given settings. This method mustn't mutate this Definition as it may be called
-     * multiple times with different settings.
-     *
-     * @param settings
-     *         the game settings to use to generate a game-specific object from this definition
-     *
-     * @return the new game-specific object created from this definition
-     */
-    T create(Settings settings);
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.java
deleted file mode 100644
index e35463d4..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/EffectsDefinition.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.effects.BonusPerBoardElement;
-import org.luxons.sevenwonders.game.effects.Discount;
-import org.luxons.sevenwonders.game.effects.Effect;
-import org.luxons.sevenwonders.game.effects.GoldIncrease;
-import org.luxons.sevenwonders.game.effects.MilitaryReinforcements;
-import org.luxons.sevenwonders.game.effects.ProductionIncrease;
-import org.luxons.sevenwonders.game.effects.RawPointsIncrease;
-import org.luxons.sevenwonders.game.effects.ScienceProgress;
-import org.luxons.sevenwonders.game.effects.SpecialAbility;
-import org.luxons.sevenwonders.game.effects.SpecialAbilityActivation;
-
-@SuppressWarnings("unused") // the fields are injected by Gson
-public class EffectsDefinition implements Definition<List<Effect>> {
-
-    private GoldIncrease gold;
-
-    private MilitaryReinforcements military;
-
-    private ScienceProgress science;
-
-    private Discount discount;
-
-    private BonusPerBoardElement perBoardElement;
-
-    private ProductionIncrease production;
-
-    private RawPointsIncrease points;
-
-    private SpecialAbility action;
-
-    @Override
-    public List<Effect> create(Settings settings) {
-        List<Effect> effects = new ArrayList<>();
-        if (gold != null) {
-            effects.add(gold);
-        }
-        if (military != null) {
-            effects.add(military);
-        }
-        if (science != null) {
-            effects.add(science);
-        }
-        if (discount != null) {
-            effects.add(discount);
-        }
-        if (perBoardElement != null) {
-            effects.add(perBoardElement);
-        }
-        if (production != null) {
-            effects.add(production);
-        }
-        if (points != null) {
-            effects.add(points);
-        }
-        if (action != null) {
-            effects.add(new SpecialAbilityActivation(action));
-        }
-        return effects;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.java
deleted file mode 100644
index a972a517..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderDefinition.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.wonders.Wonder;
-
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection") // the fields are injected by Gson
-public class WonderDefinition implements Definition<Wonder> {
-
-    private String name;
-
-    private Map<WonderSide, WonderSideDefinition> sides;
-
-    @Override
-    public Wonder create(Settings settings) {
-        Wonder wonder = new Wonder();
-        wonder.setName(name);
-
-        WonderSideDefinition wonderSideDef = sides.get(settings.pickWonderSide());
-        wonder.setInitialResource(wonderSideDef.getInitialResource());
-        wonder.setStages(wonderSideDef.createStages(settings));
-        wonder.setImage(wonderSideDef.getImage());
-        return wonder;
-    }
-
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
deleted file mode 100644
index 34091350..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSide.java
+++ /dev/null
@@ -1,6 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-public enum WonderSide {
-    A,
-    B
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
deleted file mode 100644
index c84bba4e..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSideDefinition.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.wonders.WonderStage;
-
-// the fields are injected by Gson
-@SuppressWarnings("unused,MismatchedQueryAndUpdateOfCollection")
-class WonderSideDefinition {
-
-    private ResourceType initialResource;
-
-    private List<WonderStageDefinition> stages;
-
-    private String image;
-
-    ResourceType getInitialResource() {
-        return initialResource;
-    }
-
-    List<WonderStage> createStages(Settings settings) {
-        return stages.stream().map(def -> def.create(settings)).collect(Collectors.toList());
-    }
-
-    String getImage() {
-        return image;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethod.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethod.java
deleted file mode 100644
index 08aaad14..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderSidePickMethod.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import java.util.Random;
-
-public enum WonderSidePickMethod {
-    ALL_A {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            return WonderSide.A;
-        }
-    },
-    ALL_B {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            return WonderSide.B;
-        }
-    },
-    EACH_RANDOM {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            return random.nextBoolean() ? WonderSide.A : WonderSide.B;
-        }
-    },
-    SAME_RANDOM_FOR_ALL {
-        @Override
-        public WonderSide pickSide(Random random, WonderSide lastPickedSide) {
-            if (lastPickedSide == null) {
-                return random.nextBoolean() ? WonderSide.A : WonderSide.B;
-            } else {
-                return lastPickedSide;
-            }
-        }
-    };
-
-    public abstract WonderSide pickSide(Random random, WonderSide lastPickedSide);
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.java
deleted file mode 100644
index 887b414a..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/definitions/WonderStageDefinition.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package org.luxons.sevenwonders.game.data.definitions;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.cards.Requirements;
-import org.luxons.sevenwonders.game.wonders.WonderStage;
-
-@SuppressWarnings("unused") // the fields are injected by Gson
-public class WonderStageDefinition implements Definition<WonderStage> {
-
-    private Requirements requirements;
-
-    private EffectsDefinition effects;
-
-    @Override
-    public WonderStage create(Settings settings) {
-        WonderStage stage = new WonderStage();
-        stage.setRequirements(requirements);
-        stage.setEffects(effects.create(settings));
-        return stage;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
deleted file mode 100644
index c0a75d80..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/NumericEffectSerializer.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.effects.Effect;
-import org.luxons.sevenwonders.game.effects.GoldIncrease;
-import org.luxons.sevenwonders.game.effects.MilitaryReinforcements;
-import org.luxons.sevenwonders.game.effects.RawPointsIncrease;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class NumericEffectSerializer implements JsonSerializer<Effect>, JsonDeserializer<Effect> {
-
-    @Override
-    public JsonElement serialize(Effect effect, Type typeOfSrc, JsonSerializationContext context) {
-        int value;
-        if (MilitaryReinforcements.class.equals(typeOfSrc)) {
-            value = ((MilitaryReinforcements) effect).getCount();
-        } else if (GoldIncrease.class.equals(typeOfSrc)) {
-            value = ((GoldIncrease) effect).getAmount();
-        } else if (RawPointsIncrease.class.equals(typeOfSrc)) {
-            value = ((RawPointsIncrease) effect).getPoints();
-        } else {
-            throw new IllegalArgumentException("Unknown numeric effect " + typeOfSrc.getTypeName());
-        }
-        return new JsonPrimitive(value);
-    }
-
-    @Override
-    public Effect deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        int value = json.getAsInt();
-        if (MilitaryReinforcements.class.equals(typeOfT)) {
-            return new MilitaryReinforcements(value);
-        } else if (GoldIncrease.class.equals(typeOfT)) {
-            return new GoldIncrease(value);
-        } else if (RawPointsIncrease.class.equals(typeOfT)) {
-            return new RawPointsIncrease(value);
-        }
-        throw new IllegalArgumentException("Unknown numeric effet " + typeOfT.getTypeName());
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
deleted file mode 100644
index c3eb1386..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionIncreaseSerializer.java
+++ /dev/null
@@ -1,55 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.effects.ProductionIncrease;
-import org.luxons.sevenwonders.game.resources.Production;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ProductionIncreaseSerializer implements JsonSerializer<ProductionIncrease>,
-        JsonDeserializer<ProductionIncrease> {
-
-    @Override
-    public JsonElement serialize(ProductionIncrease productionIncrease, Type typeOfSrc,
-            JsonSerializationContext context) {
-        Production production = productionIncrease.getProduction();
-        JsonElement json = context.serialize(production);
-        if (!json.isJsonNull() && !productionIncrease.isSellable()) {
-            return new JsonPrimitive(wrapInBrackets(json.getAsString()));
-        }
-        return json;
-    }
-
-    private String wrapInBrackets(String str) {
-        return '(' + str + ')';
-    }
-
-    @Override
-    public ProductionIncrease deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        ProductionIncrease productionIncrease = new ProductionIncrease();
-
-        String resourcesStr = json.getAsString();
-        boolean isSellable = !resourcesStr.startsWith("(");
-        if (!isSellable) {
-            resourcesStr = unwrapBrackets(resourcesStr);
-            json = new JsonPrimitive(resourcesStr);
-        }
-        productionIncrease.setSellable(isSellable);
-
-        Production production = context.deserialize(json, Production.class);
-        productionIncrease.setProduction(production);
-        return productionIncrease;
-    }
-
-    private static String unwrapBrackets(String str) {
-        return str.substring(1, str.length() - 1);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
deleted file mode 100644
index 178134bb..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ProductionSerializer.java
+++ /dev/null
@@ -1,78 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-import java.util.Set;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.resources.Production;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ProductionSerializer implements JsonSerializer<Production>, JsonDeserializer<Production> {
-
-    @Override
-    public JsonElement serialize(Production production, Type typeOfSrc, JsonSerializationContext context) {
-        Resources fixedResources = production.getFixedResources();
-        Set<Set<ResourceType>> choices = production.getAlternativeResources();
-        if (fixedResources.isEmpty()) {
-            return serializeAsChoice(choices, context);
-        } else if (choices.isEmpty()) {
-            return serializeAsResources(fixedResources, context);
-        } else {
-            throw new IllegalArgumentException("Cannot serialize a production with mixed fixed resources and choices");
-        }
-    }
-
-    private static JsonElement serializeAsChoice(Set<Set<ResourceType>> choices, JsonSerializationContext context) {
-        if (choices.isEmpty()) {
-            return JsonNull.INSTANCE;
-        }
-        if (choices.size() > 1) {
-            throw new IllegalArgumentException("Cannot serialize a production with more than one choice");
-        }
-        String str = choices.stream()
-                            .flatMap(Set::stream)
-                            .map(ResourceType::getSymbol)
-                            .map(Object::toString)
-                            .collect(Collectors.joining("/"));
-        return context.serialize(str);
-    }
-
-    private static JsonElement serializeAsResources(Resources fixedResources, JsonSerializationContext context) {
-        return context.serialize(fixedResources);
-    }
-
-    @Override
-    public Production deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String resourcesStr = json.getAsString();
-        Production production = new Production();
-        if (resourcesStr.contains("/")) {
-            production.addChoice(createChoice(resourcesStr));
-        } else {
-            Resources fixedResources = context.deserialize(json, Resources.class);
-            production.addAll(fixedResources);
-        }
-        return production;
-    }
-
-    private ResourceType[] createChoice(String choiceStr) {
-        String[] symbols = choiceStr.split("/");
-        ResourceType[] choice = new ResourceType[symbols.length];
-        for (int i = 0; i < symbols.length; i++) {
-            if (symbols[i].length() != 1) {
-                throw new IllegalArgumentException("Choice elements must be resource types, got " + symbols[i]);
-            }
-            choice[i] = ResourceType.fromSymbol(symbols[i].charAt(0));
-        }
-        return choice;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
deleted file mode 100644
index d2a49180..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypeSerializer.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ResourceTypeSerializer implements JsonSerializer<ResourceType>, JsonDeserializer<ResourceType> {
-
-    @Override
-    public JsonElement serialize(ResourceType type, Type typeOfSrc, JsonSerializationContext context) {
-        return new JsonPrimitive(type.getSymbol());
-    }
-
-    @Override
-    public ResourceType deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String str = json.getAsString();
-        if (str.isEmpty()) {
-            throw new IllegalArgumentException("Empty string is not a valid resource type");
-        }
-        return ResourceType.fromSymbol(str.charAt(0));
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
deleted file mode 100644
index 89d3e723..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourceTypesSerializer.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ResourceTypesSerializer implements JsonSerializer<List<ResourceType>>,
-        JsonDeserializer<List<ResourceType>> {
-
-    @Override
-    public JsonElement serialize(List<ResourceType> resources, Type typeOfSrc, JsonSerializationContext context) {
-        String s = resources.stream().map(ResourceType::getSymbol).map(Object::toString).collect(Collectors.joining());
-        return new JsonPrimitive(s);
-    }
-
-    @Override
-    public List<ResourceType> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String s = json.getAsString();
-        List<ResourceType> resources = new ArrayList<>();
-        for (char c : s.toCharArray()) {
-            resources.add(ResourceType.fromSymbol(c));
-        }
-        return resources;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
deleted file mode 100644
index 9c27b2a1..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ResourcesSerializer.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-import java.util.stream.Collectors;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ResourcesSerializer implements JsonSerializer<Resources>, JsonDeserializer<Resources> {
-
-    @Override
-    public JsonElement serialize(Resources resources, Type typeOfSrc, JsonSerializationContext context) {
-        String s = resources.asList()
-                            .stream()
-                            .map(ResourceType::getSymbol)
-                            .map(Object::toString)
-                            .collect(Collectors.joining());
-        return s.isEmpty() ? JsonNull.INSTANCE : new JsonPrimitive(s);
-    }
-
-    @Override
-    public Resources deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String s = json.getAsString();
-        Resources resources = new Resources();
-        for (char c : s.toCharArray()) {
-            resources.add(ResourceType.fromSymbol(c), 1);
-        }
-        return resources;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java b/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
deleted file mode 100644
index cecad405..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/data/serializers/ScienceProgressSerializer.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package org.luxons.sevenwonders.game.data.serializers;
-
-import java.lang.reflect.Type;
-
-import org.luxons.sevenwonders.game.boards.Science;
-import org.luxons.sevenwonders.game.boards.ScienceType;
-import org.luxons.sevenwonders.game.effects.ScienceProgress;
-
-import com.google.gson.JsonDeserializationContext;
-import com.google.gson.JsonDeserializer;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.JsonSerializationContext;
-import com.google.gson.JsonSerializer;
-
-public class ScienceProgressSerializer implements JsonSerializer<ScienceProgress>, JsonDeserializer<ScienceProgress> {
-
-    @Override
-    public JsonElement serialize(ScienceProgress scienceProgress, Type typeOfSrc, JsonSerializationContext context) {
-        Science science = scienceProgress.getScience();
-
-        if (science.size() > 1) {
-            throw new UnsupportedOperationException("Cannot serialize science containing more than one element");
-        }
-
-        for (ScienceType type : ScienceType.values()) {
-            int quantity = science.getQuantity(type);
-            if (quantity == 1) {
-                return context.serialize(type);
-            }
-        }
-
-        if (science.getJokers() == 1) {
-            return new JsonPrimitive("any");
-        }
-
-        return JsonNull.INSTANCE;
-    }
-
-    @Override
-    public ScienceProgress deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
-            throws JsonParseException {
-        String s = json.getAsString();
-        ScienceProgress scienceProgress = new ScienceProgress();
-        Science science = new Science();
-        if ("any".equals(s)) {
-            science.addJoker(1);
-        } else {
-            science.add(deserializeScienceType(json, context), 1);
-        }
-        scienceProgress.setScience(science);
-        return scienceProgress;
-    }
-
-    private ScienceType deserializeScienceType(JsonElement json, JsonDeserializationContext context) {
-        ScienceType type = context.deserialize(json, ScienceType.class);
-        if (type == null) {
-            throw new IllegalArgumentException("Invalid science type " + json.getAsString());
-        }
-        return type;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/BonusPerBoardElement.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/BonusPerBoardElement.java
deleted file mode 100644
index e9f9fe5f..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/BonusPerBoardElement.java
+++ /dev/null
@@ -1,86 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.boards.BoardElementType;
-import org.luxons.sevenwonders.game.boards.RelativeBoardPosition;
-import org.luxons.sevenwonders.game.cards.Color;
-
-public class BonusPerBoardElement implements Effect {
-
-    private List<RelativeBoardPosition> boards;
-
-    private int gold;
-
-    private int points;
-
-    private BoardElementType type;
-
-    // only relevant if type=CARD
-    private List<Color> colors;
-
-    public List<RelativeBoardPosition> getBoards() {
-        return boards;
-    }
-
-    public void setBoards(List<RelativeBoardPosition> boards) {
-        this.boards = boards;
-    }
-
-    public int getGold() {
-        return gold;
-    }
-
-    public void setGold(int gold) {
-        this.gold = gold;
-    }
-
-    public int getPoints() {
-        return points;
-    }
-
-    public void setPoints(int points) {
-        this.points = points;
-    }
-
-    public BoardElementType getType() {
-        return type;
-    }
-
-    public void setType(BoardElementType type) {
-        this.type = type;
-    }
-
-    public List<Color> getColors() {
-        return colors;
-    }
-
-    public void setColors(List<Color> colors) {
-        this.colors = colors;
-    }
-
-    @Override
-    public void apply(Table table, int playerIndex) {
-        int goldGain = gold * computeNbOfMatchingElementsIn(table, playerIndex);
-        Board board = table.getBoard(playerIndex);
-        board.addGold(goldGain);
-    }
-
-    @Override
-    public int computePoints(Table table, int playerIndex) {
-        return points * computeNbOfMatchingElementsIn(table, playerIndex);
-    }
-
-    private int computeNbOfMatchingElementsIn(Table table, int playerIndex) {
-        return boards.stream()
-                     .map(pos -> table.getBoard(playerIndex, pos))
-                     .mapToInt(this::computeNbOfMatchingElementsIn)
-                     .sum();
-    }
-
-    private int computeNbOfMatchingElementsIn(Board board) {
-        return type.getElementCount(board, colors);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java
deleted file mode 100644
index 976ebf35..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/Discount.java
+++ /dev/null
@@ -1,44 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.resources.Provider;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.TradingRules;
-
-public class Discount extends InstantOwnBoardEffect {
-
-    private final List<ResourceType> resourceTypes = new ArrayList<>();
-
-    private final List<Provider> providers = new ArrayList<>();
-
-    private int discountedPrice = 1;
-
-    public List<ResourceType> getResourceTypes() {
-        return resourceTypes;
-    }
-
-    public List<Provider> getProviders() {
-        return providers;
-    }
-
-    public int getDiscountedPrice() {
-        return discountedPrice;
-    }
-
-    public void setDiscountedPrice(int discountedPrice) {
-        this.discountedPrice = discountedPrice;
-    }
-
-    @Override
-    public void apply(Board board) {
-        TradingRules rules = board.getTradingRules();
-        for (ResourceType type : resourceTypes) {
-            for (Provider provider : providers) {
-                rules.setCost(type, provider, discountedPrice);
-            }
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/Effect.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/Effect.java
deleted file mode 100644
index 692eaea0..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/Effect.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import org.luxons.sevenwonders.game.api.Table;
-
-/**
- * Represents an effect than can be applied to a player's board when playing a card or building his wonder. The effect
- * may affect (or depend on) the adjacent boards. It can have an instantaneous effect on the board, or be postponed to
- * the end of game where point calculations take place.
- */
-public interface Effect {
-
-    void apply(Table table, int playerIndex);
-
-    int computePoints(Table table, int playerIndex);
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/EndGameEffect.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/EndGameEffect.java
deleted file mode 100644
index 1bae16a6..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/EndGameEffect.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import org.luxons.sevenwonders.game.api.Table;
-
-public abstract class EndGameEffect implements Effect {
-
-    @Override
-    public void apply(Table table, int playerIndex) {
-        // EndGameEffects don't do anything when applied to the board, they simply give more points in the end
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java
deleted file mode 100644
index 4c1215d4..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/GoldIncrease.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.boards.Board;
-
-public class GoldIncrease extends InstantOwnBoardEffect {
-
-    private final int amount;
-
-    public GoldIncrease(int amount) {
-        this.amount = amount;
-    }
-
-    public int getAmount() {
-        return amount;
-    }
-
-    @Override
-    public void apply(Board board) {
-        board.addGold(amount);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        GoldIncrease that = (GoldIncrease) o;
-        return amount == that.amount;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(amount);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/InstantOwnBoardEffect.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/InstantOwnBoardEffect.java
deleted file mode 100644
index 8f4340cf..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/InstantOwnBoardEffect.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-
-public abstract class InstantOwnBoardEffect implements Effect {
-
-    @Override
-    public void apply(Table table, int playerIndex) {
-        apply(table.getBoard(playerIndex));
-    }
-
-    protected abstract void apply(Board board);
-
-    @Override
-    public int computePoints(Table table, int playerIndex) {
-        // InstantEffects are only important when applied to the board, they don't give extra points in the end
-        return 0;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java
deleted file mode 100644
index 7da112f5..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/MilitaryReinforcements.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.boards.Board;
-
-public class MilitaryReinforcements extends InstantOwnBoardEffect {
-
-    private final int count;
-
-    public MilitaryReinforcements(int count) {
-        this.count = count;
-    }
-
-    public int getCount() {
-        return count;
-    }
-
-    @Override
-    public void apply(Board board) {
-        board.getMilitary().addShields(count);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        MilitaryReinforcements that = (MilitaryReinforcements) o;
-        return count == that.count;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(count);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java
deleted file mode 100644
index 514c65db..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/ProductionIncrease.java
+++ /dev/null
@@ -1,54 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.resources.Production;
-
-public class ProductionIncrease extends InstantOwnBoardEffect {
-
-    private Production production = new Production();
-
-    private boolean sellable = true;
-
-    public Production getProduction() {
-        return production;
-    }
-
-    public void setProduction(Production production) {
-        this.production = production;
-    }
-
-    public boolean isSellable() {
-        return sellable;
-    }
-
-    public void setSellable(boolean sellable) {
-        this.sellable = sellable;
-    }
-
-    @Override
-    public void apply(Board board) {
-        board.getProduction().addAll(production);
-        if (sellable) {
-            board.getPublicProduction().addAll(production);
-        }
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ProductionIncrease that = (ProductionIncrease) o;
-        return Objects.equals(production, that.production);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(production);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java
deleted file mode 100644
index 9a5d66ed..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/RawPointsIncrease.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.api.Table;
-
-public class RawPointsIncrease extends EndGameEffect {
-
-    private final int points;
-
-    public RawPointsIncrease(int points) {
-        this.points = points;
-    }
-
-    public int getPoints() {
-        return points;
-    }
-
-    @Override
-    public int computePoints(Table table, int playerIndex) {
-        return points;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        RawPointsIncrease that = (RawPointsIncrease) o;
-        return points == that.points;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(points);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/ScienceProgress.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/ScienceProgress.java
deleted file mode 100644
index 4e6764ee..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/ScienceProgress.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.boards.Science;
-
-public class ScienceProgress extends InstantOwnBoardEffect {
-
-    private Science science;
-
-    public Science getScience() {
-        return science;
-    }
-
-    public void setScience(Science science) {
-        this.science = science;
-    }
-
-    @Override
-    public void apply(Board board) {
-        board.getScience().addAll(science);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java
deleted file mode 100644
index cdf67f20..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbility.java
+++ /dev/null
@@ -1,47 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public enum SpecialAbility {
-
-    /**
-     * The player can play the last card of each age instead of discarding it. This card can be played by paying its
-     * cost, discarded to gain 3 coins or used in the construction of his or her Wonder.
-     */
-    PLAY_LAST_CARD,
-
-    /**
-     * Once per age, a player can construct a building from his or her hand for free.
-     */
-    ONE_FREE_PER_AGE,
-
-    /**
-     * The player can look at all cards discarded since the beginning of the game, pick one and build it for free.
-     */
-    PLAY_DISCARDED,
-
-    /**
-     * The player can, at the end of the game, "copy" a Guild of his or her choice (purple card), built by one of his or
-     * her two neighboring cities.
-     */
-    COPY_GUILD {
-        @Override
-        public int computePoints(Table table, int playerIndex) {
-            Card copiedGuild = table.getBoard(playerIndex).getCopiedGuild();
-            if (copiedGuild == null) {
-                throw new IllegalStateException("The copied Guild has not been chosen, cannot compute points");
-            }
-            return copiedGuild.getEffects().stream().mapToInt(e -> e.computePoints(table, playerIndex)).sum();
-        }
-    };
-
-    protected void apply(Board board) {
-        board.addSpecial(this);
-    }
-
-    public int computePoints(Table table, int playerIndex) {
-        return 0;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbilityActivation.java b/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbilityActivation.java
deleted file mode 100644
index a5953c2f..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/effects/SpecialAbilityActivation.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package org.luxons.sevenwonders.game.effects;
-
-import org.luxons.sevenwonders.game.api.Table;
-
-public class SpecialAbilityActivation implements Effect {
-
-    private final SpecialAbility specialAbility;
-
-    public SpecialAbilityActivation(SpecialAbility specialAbility) {
-        this.specialAbility = specialAbility;
-    }
-
-    public SpecialAbility getSpecialAbility() {
-        return specialAbility;
-    }
-
-    @Override
-    public void apply(Table table, int playerIndex) {
-        specialAbility.apply(table.getBoard(playerIndex));
-    }
-
-    @Override
-    public int computePoints(Table table, int playerIndex) {
-        return specialAbility.computePoints(table, playerIndex);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/BuildWonderMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/BuildWonderMove.java
deleted file mode 100644
index f1cb50b3..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/BuildWonderMove.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public class BuildWonderMove extends CardFromHandMove {
-
-    BuildWonderMove(int playerIndex, Card card, PlayerMove move) {
-        super(playerIndex, card, move);
-    }
-
-    @Override
-    public void validate(Table table, List<Card> playerHand) throws InvalidMoveException {
-        super.validate(table, playerHand);
-        Board board = table.getBoard(getPlayerIndex());
-        if (!board.getWonder().isNextStageBuildable(table, getPlayerIndex(), getBoughtResources())) {
-            throw new InvalidMoveException(
-                    String.format("Player %d cannot upgrade his wonder with the given resources", getPlayerIndex()));
-        }
-    }
-
-    @Override
-    public void place(Table table, List<Card> discardedCards, Settings settings) {
-        Board board = table.getBoard(getPlayerIndex());
-        board.getWonder().buildLevel(getCard().getBack());
-    }
-
-    @Override
-    public void activate(Table table, List<Card> discardedCards, Settings settings) {
-        int playerIndex = getPlayerIndex();
-        Board board = table.getBoard(playerIndex);
-        board.getWonder().activateLastBuiltStage(table, playerIndex, getBoughtResources());
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/CardFromHandMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/CardFromHandMove.java
deleted file mode 100644
index 1794966d..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/CardFromHandMove.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public abstract class CardFromHandMove extends Move {
-
-    CardFromHandMove(int playerIndex, Card card, PlayerMove move) {
-        super(playerIndex, card, move);
-    }
-
-    @Override
-    public void validate(Table table, List<Card> playerHand) throws InvalidMoveException {
-        if (!playerHand.contains(getCard())) {
-            throw new InvalidMoveException(
-                    String.format("Player %d does not have the card '%s' in his hand", getPlayerIndex(),
-                            getCard().getName()));
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/CopyGuildMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/CopyGuildMove.java
deleted file mode 100644
index a93670c5..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/CopyGuildMove.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.boards.RelativeBoardPosition;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.cards.Color;
-import org.luxons.sevenwonders.game.effects.SpecialAbility;
-
-public class CopyGuildMove extends Move {
-
-    CopyGuildMove(int playerIndex, Card card, PlayerMove move) {
-        super(playerIndex, card, move);
-    }
-
-    @Override
-    public void validate(Table table, List<Card> playerHand) throws InvalidMoveException {
-        Board board = table.getBoard(getPlayerIndex());
-        if (!board.hasSpecial(SpecialAbility.COPY_GUILD)) {
-            throw new InvalidMoveException(
-                    String.format("Player %d does not have the ability to copy guild cards", getPlayerIndex()));
-        }
-        if (getCard().getColor() != Color.PURPLE) {
-            throw new InvalidMoveException(
-                    String.format("Player %d cannot copy card %s because it is not a guild card", getPlayerIndex(),
-                            getCard().getName()));
-        }
-        boolean leftNeighbourHasIt = neighbourHasTheCard(table, RelativeBoardPosition.LEFT);
-        boolean rightNeighbourHasIt = neighbourHasTheCard(table, RelativeBoardPosition.RIGHT);
-        if (!leftNeighbourHasIt && !rightNeighbourHasIt) {
-            throw new InvalidMoveException(
-                    String.format("Player %d cannot copy card %s because none of his neighbour has it",
-                            getPlayerIndex(), getCard().getName()));
-        }
-    }
-
-    private boolean neighbourHasTheCard(Table table, RelativeBoardPosition position) {
-        Board neighbourBoard = table.getBoard(getPlayerIndex(), position);
-        return neighbourBoard.getPlayedCards().contains(getCard());
-    }
-
-    @Override
-    public void place(Table table, List<Card> discardedCards, Settings settings) {
-        // nothing special to do here
-    }
-
-    @Override
-    public void activate(Table table, List<Card> discardedCards, Settings settings) {
-        Board board = table.getBoard(getPlayerIndex());
-        board.setCopiedGuild(getCard());
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/DiscardMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/DiscardMove.java
deleted file mode 100644
index 076a593c..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/DiscardMove.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public class DiscardMove extends CardFromHandMove {
-
-    DiscardMove(int playerIndex, Card card, PlayerMove move) {
-        super(playerIndex, card, move);
-    }
-
-    @Override
-    public void place(Table table, List<Card> discardedCards, Settings settings) {
-        discardedCards.add(getCard());
-    }
-
-    @Override
-    public void activate(Table table, List<Card> discardedCards, Settings settings) {
-        Board board = table.getBoard(getPlayerIndex());
-        board.addGold(settings.getDiscardedCardGold());
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/InvalidMoveException.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/InvalidMoveException.java
deleted file mode 100644
index 58190274..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/InvalidMoveException.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-public class InvalidMoveException extends IllegalArgumentException {
-
-    public InvalidMoveException(String message) {
-        super(message);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/Move.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/Move.java
deleted file mode 100644
index 40c61eea..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/Move.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.resources.BoughtResources;
-
-public abstract class Move {
-
-    private int playerIndex;
-
-    private Card card;
-
-    private MoveType type;
-
-    private List<BoughtResources> boughtResources = new ArrayList<>();
-
-    Move(int playerIndex, Card card, PlayerMove move) {
-        this.playerIndex = playerIndex;
-        this.card = card;
-        this.type = move.getType();
-        this.boughtResources = move.getBoughtResources();
-    }
-
-    public int getPlayerIndex() {
-        return playerIndex;
-    }
-
-    public Card getCard() {
-        return card;
-    }
-
-    public MoveType getType() {
-        return type;
-    }
-
-    public List<BoughtResources> getBoughtResources() {
-        return boughtResources;
-    }
-
-    public abstract void validate(Table table, List<Card> playerHand) throws InvalidMoveException;
-
-    public abstract void place(Table table, List<Card> discardedCards, Settings settings);
-
-    public abstract void activate(Table table, List<Card> discardedCards, Settings settings);
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java
deleted file mode 100644
index bf64344d..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/MoveType.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public enum MoveType {
-    PLAY {
-        @Override
-        public Move resolve(int playerIndex, Card card, PlayerMove move) {
-            return new PlayCardMove(playerIndex, card, move);
-        }
-    },
-    PLAY_FREE {
-        @Override
-        public Move resolve(int playerIndex, Card card, PlayerMove move) {
-            return new PlayFreeCardMove(playerIndex, card, move);
-        }
-    },
-    UPGRADE_WONDER {
-        @Override
-        public Move resolve(int playerIndex, Card card, PlayerMove move) {
-            return new BuildWonderMove(playerIndex, card, move);
-        }
-    },
-    DISCARD {
-        @Override
-        public Move resolve(int playerIndex, Card card, PlayerMove move) {
-            return new DiscardMove(playerIndex, card, move);
-        }
-    },
-    COPY_GUILD {
-        @Override
-        public Move resolve(int playerIndex, Card card, PlayerMove move) {
-            return new CopyGuildMove(playerIndex, card, move);
-        }
-    };
-
-    public abstract Move resolve(int playerIndex, Card card, PlayerMove move);
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/PlayCardMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/PlayCardMove.java
deleted file mode 100644
index 82052981..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/PlayCardMove.java
+++ /dev/null
@@ -1,39 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public class PlayCardMove extends CardFromHandMove {
-
-    PlayCardMove(int playerIndex, Card card, PlayerMove move) {
-        super(playerIndex, card, move);
-    }
-
-    @Override
-    public void validate(Table table, List<Card> playerHand) throws InvalidMoveException {
-        super.validate(table, playerHand);
-        Board board = table.getBoard(getPlayerIndex());
-        if (!getCard().isChainableOn(board) && !getCard().getRequirements()
-                                                         .areMetWithHelpBy(board, getBoughtResources())) {
-            throw new InvalidMoveException(
-                    String.format("Player %d cannot play the card %s with the given resources", getPlayerIndex(),
-                            getCard().getName()));
-        }
-    }
-
-    @Override
-    public void place(Table table, List<Card> discardedCards, Settings settings) {
-        Board board = table.getBoard(getPlayerIndex());
-        board.addCard(getCard());
-    }
-
-    @Override
-    public void activate(Table table, List<Card> discardedCards, Settings settings) {
-        getCard().applyTo(table, getPlayerIndex(), getBoughtResources());
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/moves/PlayFreeCardMove.java b/backend/src/main/java/org/luxons/sevenwonders/game/moves/PlayFreeCardMove.java
deleted file mode 100644
index 4e8eefa5..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/moves/PlayFreeCardMove.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.moves;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Settings;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.Card;
-
-public class PlayFreeCardMove extends CardFromHandMove {
-
-    PlayFreeCardMove(int playerIndex, Card card, PlayerMove move) {
-        super(playerIndex, card, move);
-    }
-
-    @Override
-    public void validate(Table table, List<Card> playerHand) throws InvalidMoveException {
-        super.validate(table, playerHand);
-        Board board = table.getBoard(getPlayerIndex());
-        if (!board.canPlayFreeCard(table.getCurrentAge())) {
-            throw new InvalidMoveException(
-                    String.format("Player %d cannot play the card %s for free", getPlayerIndex(), getCard().getName()));
-        }
-    }
-
-    @Override
-    public void place(Table table, List<Card> discardedCards, Settings settings) {
-        Board board = table.getBoard(getPlayerIndex());
-        board.addCard(getCard());
-    }
-
-    @Override
-    public void activate(Table table, List<Card> discardedCards, Settings settings) {
-        // only apply effects, without paying the cost
-        getCard().getEffects().forEach(e -> e.apply(table, getPlayerIndex()));
-        Board board = table.getBoard(getPlayerIndex());
-        board.consumeFreeCard(table.getCurrentAge());
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/BestPriceCalculator.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/BestPriceCalculator.java
deleted file mode 100644
index 8fed41d1..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/BestPriceCalculator.java
+++ /dev/null
@@ -1,102 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-import java.util.ArrayList;
-import java.util.EnumSet;
-import java.util.List;
-import java.util.Set;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-
-public class BestPriceCalculator {
-
-    private final Resources resources;
-
-    private final List<ResourcePool> pools;
-
-    private BestPriceCalculator(Resources resources, Table table, int playerIndex) {
-        this.resources = resources;
-        this.pools = createResourcePools(table, playerIndex);
-    }
-
-    private static List<ResourcePool> createResourcePools(Table table, int playerIndex) {
-        Provider[] providers = Provider.values();
-        List<ResourcePool> pools = new ArrayList<>(providers.length + 1);
-
-        Board board = table.getBoard(playerIndex);
-        TradingRules rules = board.getTradingRules();
-        pools.add(new ResourcePool(board.getProduction(), null, rules));
-
-        for (Provider provider : providers) {
-            Board providerBoard = table.getBoard(playerIndex, provider.getBoardPosition());
-            ResourcePool pool = new ResourcePool(providerBoard.getPublicProduction(), provider, rules);
-            pools.add(pool);
-        }
-        return pools;
-    }
-
-    public static int bestPrice(Resources resources, Table table, int playerIndex) {
-        Board board = table.getBoard(playerIndex);
-        Resources leftToPay = resources.minus(board.getProduction().getFixedResources());
-        return new BestPriceCalculator(leftToPay, table, playerIndex).bestPrice();
-    }
-
-    private int bestPrice() {
-        if (resources.isEmpty()) {
-            return 0;
-        }
-        int currentMinPrice = Integer.MAX_VALUE;
-        for (ResourceType type : ResourceType.values()) {
-            if (resources.getQuantity(type) > 0) {
-                int minPriceUsingOwnResource = bestPriceWithout(type);
-                currentMinPrice = Math.min(currentMinPrice, minPriceUsingOwnResource);
-            }
-        }
-        return currentMinPrice;
-    }
-
-    private int bestPriceWithout(ResourceType type) {
-        resources.remove(type, 1);
-        int currentMinPrice = Integer.MAX_VALUE;
-        for (ResourcePool pool : pools) {
-            int resCostInPool = pool.getCost(type);
-            for (Set<ResourceType> choice : pool.getChoices()) {
-                if (choice.contains(type)) {
-                    Set<ResourceType> temp = EnumSet.copyOf(choice);
-                    choice.clear();
-                    currentMinPrice = Math.min(currentMinPrice, bestPrice() + resCostInPool);
-                    choice.addAll(temp);
-                }
-            }
-        }
-        resources.add(type, 1);
-        return currentMinPrice;
-    }
-
-    private static class ResourcePool {
-
-        private final Set<Set<ResourceType>> choices;
-
-        private final Provider provider;
-
-        private final TradingRules rules;
-
-        private ResourcePool(Production production, Provider provider, TradingRules rules) {
-            this.choices = production.asChoices();
-            this.provider = provider;
-            this.rules = rules;
-        }
-
-        Set<Set<ResourceType>> getChoices() {
-            return choices;
-        }
-
-        int getCost(ResourceType type) {
-            if (provider == null) {
-                return 0;
-            }
-            return rules.getCost(type, provider);
-        }
-    }
-}
-
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/BoughtResources.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/BoughtResources.java
deleted file mode 100644
index ec261c8c..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/BoughtResources.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-public class BoughtResources {
-
-    private Provider provider;
-
-    private Resources resources;
-
-    public Provider getProvider() {
-        return provider;
-    }
-
-    public void setProvider(Provider provider) {
-        this.provider = provider;
-    }
-
-    public Resources getResources() {
-        return resources;
-    }
-
-    public void setResources(Resources resources) {
-        this.resources = resources;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java
deleted file mode 100644
index 7fa83e51..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Production.java
+++ /dev/null
@@ -1,106 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-import java.util.Arrays;
-import java.util.EnumSet;
-import java.util.HashSet;
-import java.util.Objects;
-import java.util.Set;
-
-public class Production {
-
-    private final Resources fixedResources = new Resources();
-
-    private final Set<Set<ResourceType>> alternativeResources = new HashSet<>();
-
-    public void addFixedResource(ResourceType type, int quantity) {
-        fixedResources.add(type, quantity);
-    }
-
-    public void addChoice(ResourceType... options) {
-        EnumSet<ResourceType> optionSet = EnumSet.copyOf(Arrays.asList(options));
-        alternativeResources.add(optionSet);
-    }
-
-    public void addAll(Resources resources) {
-        fixedResources.addAll(resources);
-    }
-
-    public void addAll(Production production) {
-        fixedResources.addAll(production.getFixedResources());
-        alternativeResources.addAll(production.getAlternativeResources());
-    }
-
-    public Resources getFixedResources() {
-        return fixedResources;
-    }
-
-    public Set<Set<ResourceType>> getAlternativeResources() {
-        return alternativeResources;
-    }
-
-    Set<Set<ResourceType>> asChoices() {
-        Set<Set<ResourceType>> result = new HashSet<>(fixedResources.size() + alternativeResources.size());
-        fixedResources.asList().stream().map(EnumSet::of).forEach(result::add);
-        result.addAll(alternativeResources);
-        return result;
-    }
-
-    public boolean contains(Resources resources) {
-        if (fixedResources.contains(resources)) {
-            return true;
-        }
-        Resources remaining = resources.minus(fixedResources);
-        return containedInAlternatives(remaining);
-    }
-
-    private boolean containedInAlternatives(Resources resources) {
-        return containedInAlternatives(resources, alternativeResources);
-    }
-
-    private static boolean containedInAlternatives(Resources resources, Set<Set<ResourceType>> alternatives) {
-        if (resources.isEmpty()) {
-            return true;
-        }
-        for (ResourceType type : ResourceType.values()) {
-            if (resources.getQuantity(type) <= 0) {
-                continue;
-            }
-            Set<ResourceType> candidate = findFirstAlternativeContaining(alternatives, type);
-            if (candidate == null) {
-                return false; // no alternative produces the resource of this entry
-            }
-            resources.remove(type, 1);
-            alternatives.remove(candidate);
-            boolean remainingAreContainedToo = containedInAlternatives(resources, alternatives);
-            resources.add(type, 1);
-            alternatives.add(candidate);
-            if (remainingAreContainedToo) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    private static Set<ResourceType> findFirstAlternativeContaining(Set<Set<ResourceType>> alternatives,
-            ResourceType type) {
-        return alternatives.stream().filter(a -> a.contains(type)).findAny().orElse(null);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        Production that = (Production) o;
-        return Objects.equals(fixedResources, that.fixedResources) && Objects.equals(alternativeResources,
-                that.alternativeResources);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(fixedResources, alternativeResources);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Provider.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Provider.java
deleted file mode 100644
index 9c4aa3f9..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Provider.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-import org.luxons.sevenwonders.game.boards.RelativeBoardPosition;
-
-public enum Provider {
-    LEFT_PLAYER(RelativeBoardPosition.LEFT),
-    RIGHT_PLAYER(RelativeBoardPosition.RIGHT);
-
-    private final RelativeBoardPosition boardPosition;
-
-    Provider(RelativeBoardPosition boardPosition) {
-        this.boardPosition = boardPosition;
-    }
-
-    public RelativeBoardPosition getBoardPosition() {
-        return boardPosition;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
deleted file mode 100644
index baad8451..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/ResourceType.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public enum ResourceType {
-    WOOD('W'),
-    STONE('S'),
-    ORE('O'),
-    CLAY('C'),
-    GLASS('G'),
-    PAPYRUS('P'),
-    LOOM('L');
-
-    private static final Map<Character, ResourceType> typesPerSymbol = new HashMap<>(7);
-
-    static {
-        for (ResourceType type : values()) {
-            typesPerSymbol.put(type.symbol, type);
-        }
-    }
-
-    private final Character symbol;
-
-    ResourceType(Character symbol) {
-        this.symbol = symbol;
-    }
-
-    public static ResourceType fromSymbol(Character symbol) {
-        ResourceType type = typesPerSymbol.get(symbol);
-        if (type == null) {
-            throw new IllegalArgumentException(String.format("Unknown resource type symbol '%s'", symbol));
-        }
-        return type;
-    }
-
-    public Character getSymbol() {
-        return symbol;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java
deleted file mode 100644
index 04278fea..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/Resources.java
+++ /dev/null
@@ -1,91 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-import java.util.EnumMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.NoSuchElementException;
-import java.util.Objects;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
-public class Resources {
-
-    private final Map<ResourceType, Integer> quantities = new EnumMap<>(ResourceType.class);
-
-    public void add(ResourceType type, int quantity) {
-        quantities.merge(type, quantity, (x, y) -> x + y);
-    }
-
-    public void remove(ResourceType type, int quantity) {
-        if (getQuantity(type) < quantity) {
-            throw new NoSuchElementException(String.format("Can't remove %d resources of type %s", quantity, type));
-        }
-        quantities.computeIfPresent(type, (t, oldQty) -> oldQty - quantity);
-    }
-
-    public void addAll(Resources resources) {
-        resources.quantities.forEach(this::add);
-    }
-
-    public int getQuantity(ResourceType type) {
-        return quantities.getOrDefault(type, 0);
-    }
-
-    public List<ResourceType> asList() {
-        return quantities.entrySet()
-                         .stream()
-                         .flatMap(e -> Stream.generate(e::getKey).limit(e.getValue()))
-                         .collect(Collectors.toList());
-    }
-
-    public boolean contains(Resources resources) {
-        return resources.quantities.entrySet().stream().allMatch(this::hasAtLeast);
-    }
-
-    private boolean hasAtLeast(Entry<ResourceType, Integer> quantity) {
-        return quantity.getValue() <= getQuantity(quantity.getKey());
-    }
-
-    /**
-     * Creates new {@link Resources} object containing these resources minus the given resources.
-     *
-     * @param resources
-     *         the resources to subtract from these resources
-     *
-     * @return a new {@link Resources} object containing these resources minus the given resources.
-     */
-    public Resources minus(Resources resources) {
-        Resources diff = new Resources();
-        quantities.forEach((type, count) -> {
-            int remainder = count - resources.getQuantity(type);
-            diff.quantities.put(type, Math.max(0, remainder));
-        });
-        return diff;
-    }
-
-    public boolean isEmpty() {
-        return size() == 0;
-    }
-
-    public int size() {
-        return quantities.values().stream().reduce(0, Integer::sum);
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        Resources resources = (Resources) o;
-        return Objects.equals(quantities, resources.quantities);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(quantities);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/resources/TradingRules.java b/backend/src/main/java/org/luxons/sevenwonders/game/resources/TradingRules.java
deleted file mode 100644
index 8cd1d9bc..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/resources/TradingRules.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package org.luxons.sevenwonders.game.resources;
-
-import java.util.EnumMap;
-import java.util.List;
-import java.util.Map;
-
-public class TradingRules {
-
-    private final Map<ResourceType, Map<Provider, Integer>> costs = new EnumMap<>(ResourceType.class);
-
-    private final int defaultCost;
-
-    public TradingRules(int defaultCost) {
-        this.defaultCost = defaultCost;
-    }
-
-    public Map<ResourceType, Map<Provider, Integer>> getCosts() {
-        return costs;
-    }
-
-    int getCost(ResourceType type, Provider provider) {
-        return costs.computeIfAbsent(type, t -> new EnumMap<>(Provider.class)).getOrDefault(provider, defaultCost);
-    }
-
-    public void setCost(ResourceType type, Provider provider, int cost) {
-        costs.computeIfAbsent(type, t -> new EnumMap<>(Provider.class)).put(provider, cost);
-    }
-
-    public int computeCost(List<BoughtResources> boughtResources) {
-        return boughtResources.stream().mapToInt(this::computeCost).sum();
-    }
-
-    public int computeCost(BoughtResources boughtResources) {
-        Resources resources = boughtResources.getResources();
-        Provider provider = boughtResources.getProvider();
-        int total = 0;
-        for (ResourceType type : ResourceType.values()) {
-            int count = resources.getQuantity(type);
-            total += getCost(type, provider) * count;
-        }
-        return total;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/PlayerScore.java b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/PlayerScore.java
deleted file mode 100644
index f4a0d832..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/PlayerScore.java
+++ /dev/null
@@ -1,38 +0,0 @@
-package org.luxons.sevenwonders.game.scoring;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class PlayerScore {
-
-    private final int boardGold;
-
-    private final Map<ScoreCategory, Integer> scoresByCategory = new HashMap<>();
-
-    private int totalPoints = 0;
-
-    public PlayerScore(int boardGold) {
-        this.boardGold = boardGold;
-    }
-
-    public Integer put(ScoreCategory category, Integer points) {
-        totalPoints += points;
-        return scoresByCategory.put(category, points);
-    }
-
-    public int getPoints(ScoreCategory category) {
-        return scoresByCategory.get(category);
-    }
-
-    public Map<ScoreCategory, Integer> getPointsPerCategory() {
-        return scoresByCategory;
-    }
-
-    public int getTotalPoints() {
-        return totalPoints;
-    }
-
-    public int getBoardGold() {
-        return boardGold;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java
deleted file mode 100644
index e7cdaedd..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreBoard.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.luxons.sevenwonders.game.scoring;
-
-import java.util.Comparator;
-import java.util.PriorityQueue;
-
-public class ScoreBoard {
-
-    private static final Comparator<PlayerScore> comparator = Comparator.comparing(PlayerScore::getTotalPoints)
-                                                                        .thenComparing(PlayerScore::getBoardGold);
-
-    private PriorityQueue<PlayerScore> scores;
-
-    public ScoreBoard() {
-        scores = new PriorityQueue<>(comparator);
-    }
-
-    public void add(PlayerScore score) {
-        scores.add(score);
-    }
-
-    public PriorityQueue<PlayerScore> getScores() {
-        return scores;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java b/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java
deleted file mode 100644
index a6a9537d..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/scoring/ScoreCategory.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package org.luxons.sevenwonders.game.scoring;
-
-public enum ScoreCategory {
-    CIVIL,
-    SCIENCE,
-    MILITARY,
-    TRADE,
-    GUILD,
-    WONDER,
-    GOLD
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java b/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java
deleted file mode 100644
index 73fff305..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/Wonder.java
+++ /dev/null
@@ -1,102 +0,0 @@
-package org.luxons.sevenwonders.game.wonders;
-
-import java.util.Arrays;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.game.resources.BoughtResources;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-public class Wonder {
-
-    private String name;
-
-    private ResourceType initialResource;
-
-    private List<WonderStage> stages;
-
-    private String image;
-
-    public Wonder() {
-    }
-
-    public Wonder(String name, ResourceType initialResource, WonderStage... stages) {
-        this.name = name;
-        this.initialResource = initialResource;
-        this.stages = Arrays.asList(stages);
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public ResourceType getInitialResource() {
-        return initialResource;
-    }
-
-    public void setInitialResource(ResourceType initialResource) {
-        this.initialResource = initialResource;
-    }
-
-    public List<WonderStage> getStages() {
-        return stages;
-    }
-
-    public void setStages(List<WonderStage> stages) {
-        this.stages = stages;
-    }
-
-    public int getNbBuiltStages() {
-        return (int) stages.stream().filter(WonderStage::isBuilt).count();
-    }
-
-    public String getImage() {
-        return image;
-    }
-
-    public void setImage(String image) {
-        this.image = image;
-    }
-
-    public boolean isNextStageBuildable(Table table, int playerIndex, List<BoughtResources> boughtResources) {
-        int nextLevel = getNbBuiltStages();
-        if (nextLevel == stages.size()) {
-            return false;
-        }
-        return getNextStage().isBuildable(table, playerIndex, boughtResources);
-    }
-
-    public void buildLevel(CardBack cardBack) {
-        getNextStage().build(cardBack);
-    }
-
-    private WonderStage getNextStage() {
-        int nextLevel = getNbBuiltStages();
-        if (nextLevel == stages.size()) {
-            throw new IllegalStateException("This wonder has already reached its maximum level");
-        }
-        return stages.get(nextLevel);
-    }
-
-    public void activateLastBuiltStage(Table table, int playerIndex, List<BoughtResources> boughtResources) {
-        getLastBuiltStage().activate(table, playerIndex, boughtResources);
-    }
-
-    private WonderStage getLastBuiltStage() {
-        int lastLevel = getNbBuiltStages() - 1;
-        return stages.get(lastLevel);
-    }
-
-    public int computePoints(Table table, int playerIndex) {
-        return stages.stream()
-                     .filter(WonderStage::isBuilt)
-                     .flatMap(c -> c.getEffects().stream())
-                     .mapToInt(e -> e.computePoints(table, playerIndex))
-                     .sum();
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java b/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java
deleted file mode 100644
index 5f6765ee..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/game/wonders/WonderStage.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package org.luxons.sevenwonders.game.wonders;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.boards.Board;
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.game.cards.Requirements;
-import org.luxons.sevenwonders.game.effects.Effect;
-import org.luxons.sevenwonders.game.resources.BoughtResources;
-
-public class WonderStage {
-
-    private Requirements requirements;
-
-    private List<Effect> effects;
-
-    private CardBack cardBack;
-
-    public Requirements getRequirements() {
-        return requirements;
-    }
-
-    public void setRequirements(Requirements requirements) {
-        this.requirements = requirements;
-    }
-
-    public List<Effect> getEffects() {
-        return effects;
-    }
-
-    public void setEffects(List<Effect> effects) {
-        this.effects = effects;
-    }
-
-    public CardBack getCardBack() {
-        return cardBack;
-    }
-
-    public boolean isBuilt() {
-        return cardBack != null;
-    }
-
-    public boolean isBuildable(Table table, int playerIndex, List<BoughtResources> boughtResources) {
-        Board board = table.getBoard(playerIndex);
-        return requirements.areMetWithHelpBy(board, boughtResources);
-    }
-
-    void build(CardBack cardBack) {
-        this.cardBack = cardBack;
-    }
-
-    void activate(Table table, int playerIndex, List<BoughtResources> boughtResources) {
-        effects.forEach(e -> e.apply(table, playerIndex));
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java b/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
index eb573479..b1b11c82 100644
--- a/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
+++ b/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
@@ -20,8 +20,8 @@ public class LobbyRepository {
     private long lastGameId = 0;
 
     @Autowired
-    public LobbyRepository(GameDefinitionLoader gameDefinitionLoader) {
-        this.gameDefinitionLoader = gameDefinitionLoader;
+    public LobbyRepository() {
+        this.gameDefinitionLoader = new GameDefinitionLoader();
     }
 
     public Collection<Lobby> list() {