Find a position with 4 pieces, where it is possible to conclude what were the last 3 plies. In your solution a king may be in check; if no king is in check you are allowed to specify who moved last.
Originally posted by David113 Find a position with 4 pieces, where it is possible to conclude what were the last 3 plies. In your solution a king may be in check; if no king is in check you are allowed to specify who moved last.
Originally posted by BigDoggProblem A bishop stuck in the corner like that can only give check via discovery, of course.
fxe6 en passant removes a pawn from e5 which is a discovered check, but the pawn was moved e7-e5 the previous move to block check from the bishop. The bishop can only have moved on the a1-h8 diagonal so with the black pawn still on e7 black's king would have been in check before and after white's previous move.
Don't you need to move everything across 1 square: bishop on b1, pawn on f6 and king on g6?
Originally posted by Ian68 fxe6 en passant removes a pawn from e5 which is a discovered check, but the pawn was moved e7-e5 the previous move to block check from the bishop. The bishop can only have moved on the a1-h8 diagonal so with the black pawn still on e7 black's king would have been in check before and after white's previous move.
Don't you need to move everything across 1 square: bishop on b1, pawn on f6 and king on g6?
Is -1.fxe6 the only possible en passant capture?
Moving the pieces one square to the right gives several possible last moves. Ba2 could have captured almost any piece on b1, giving check.
Construct your own retro #4
13 Nov '06 23:53
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