@startuml

class GameState {
    int size
    GameTree gameTree
    GameMove lastMove
    'GameData gameData

    getCurrentPlayer(self)
    getPlayerCode(self)
    getBoard(self)
    playMove(self, row, col)
    playMoveForPlayer(self, row, col, player)
    playPass(self)
    undo(self)
}

@enduml