BlackFerz, BlackAlfil, BlackAngel, BlackMarshall, BlackWazir, BlackMan,
BlackCannon, BlackNightrider, BlackCardinal, BlackDragon, BlackGrasshopper,
BlackSilver, BlackFalcon, BlackLance, BlackCobra, BlackUnicorn, BlackKing,
- EmptySquare,
+ EmptySquare, DarkSquare,
NoRights, // [HGM] gamestate: for castling rights hidden in board[CASTLING]
ClearBoard, WhitePlay, BlackPlay, PromotePiece, DemotePiece /*for use on EditPosition menus*/
} ChessSquare;