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Double Chess. Two sets of pieces on 16 by 12 board. (16x12, Cells: 192) [All Comments] [Add Comment or Rating]
Michael Nelson wrote on Sat, Sep 7, 2013 04:29 AM UTC:
Assuming that the laws of check follow FIDE rules (which is a reasonable assumption for a variant player by orthodox chess masters) Checking both Kings simultaneously is quite possible by discovery or fork, it is not automatically mate in the case of the fork, as the checking piece is potentially capturable, but cannot be answered by interposition or King move. Discovered check whereby each King ends up checked by a different piece is checkmate: there is no possible way to answer both checks. A line piece can also check by pinning one King to the other, for example Kings on a1 and c1, b1 and d1 vacant, enemy Rook moves to e1. This can be answered by capturing the Rook or interposing on d1 (not b1).