| Twinmove Chess is a double-move variant. The objective is to capture the enemy king. The double-move is constituted by a pawn move followed by a piece move, which is mandatory. There exist two variants of Twinmove Chess. In one variant pawn moves are compelled, until there exist no more pawn moves, when the pieces can continue moving without being preceded by a pawn move. Should a pawn become free to move again, it is compelled to move. In the other variant the player may abstain from the pawn move, and instead move a piece, but then he has lost his double-move.
Note that a player, when the king is threatened, can make a pawn move before taking measures to protect the king. He can also make a pawn move that discloses his king to an enemy piece, but he is well adviced to protect his king in the subsequent move. This implementation only allows promotion to queen. The 'en passant' rule does not exist, simply because a pawn move cannot occur prior to the opponent's turn. A player can castle although the king is in check, since king capture is what counts. Games always begin with a pawn move, otherwise the rules are the same as in orthodox chess. |
