White to Play
Published in Chess Puzzles
One of the great endgame studies in chess—by Rinck.
Solution:
1.Qc7+ Ka8 2.Qa5+ Kb7 [2...Kb8 3.Qb6+ Ka8 4.Nc7#]3.Nc5+ Kb8 [3...Kc6 4.Qa4+]4.Qb6+ Kc8 5.Qb7+ Kd8 6.Kd2!! and the queen, of all pieces, is in zugzwang. Wherever it moves, White mates shortly or wins the queen.
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