Named after Alice in Lewis Carroll's work Through the Looking-Glass. Chess on two boards with pieces moved between the boards.
Alice Chess is played with one set over two boards. As pieces are moved, they transfer to the mirror board.
Pieces move as normal subject to the square on the mirror board being empty. Pieces are captured on the same board
Pieces can be played on either board .
Normal promotion rules, but only when a square is available on the mirror board for the promoted piece to be placed.
Castling can only be completed if space exists on both board. That is, the empty squares between the king and rook must be empty on the mirror board too.
Kingside and queenside castling blocked by pieces on the mirror board.
En passant is not available in Alice Chess as currently due to ambiguity regarding the rules.¹
¹ Support is under consideration and may be implemented for this variant.
Check and checkmate is possible on either board. A king in check cannot escape by moving to the other board.
Stalemate conditions remain the same as Standard Chess.
Draw conditions remain the same as Standard Chess.
Checkmate your opponent on either of the boards.