Babson task
Sign in to savechess problem of a directmate with White to move, in which Black may defend by promoting, and such that if Black promotes, then White must promote to the same piece that Black just promoted to
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chess problem
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association football
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International Standard Book Number
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Kazan
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pawn
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rook
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queen
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knight
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bishop
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checkmate
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stalemate
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algebraic notation
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promotion
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glossary of chess
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Tim Krabbé
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selfmate
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fairy chess piece
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Ken Whyld
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EG
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nightrider
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