Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Attack on the uncastled king: rook to e1 (f1·2)
Winning blow: rook to c8 (h8·3)
Winning blow: king to d2 (e1·13)
Winning blow: queen to a6 (a4)
Winning blow: rook to g2 (d2)
Winning blow: queen to d4 (g1·2)
Winning blow: rook to h6 (f6·2)
Winning blow: pawn to d5 (e4·14)
Attack on the uncastled king: pawn to g6 (f5·20)
Attack on the uncastled king: knight to e4 (c3·19)
Winning blow: rook to h5 (h4)
Attack on the uncastled king: pawn to d6 (e5·21)
Winning blow: knight to b1 (d2·2)
Attack on the uncastled king: knight to f5 (e3·10)
Winning blow: queen to f6 (f2)
Winning blow: rook to g6 (g1·5)
Winning blow: knight to f4 (d3·2)
Winning blow: queen to b8 (b7·2)
Winning blow: bishop to a5 (d2·3)
Winning blow: bishop to c5 (f2)
Winning blow: queen to d4 (a7·2)
Attack on the uncastled king: bishop to a5 (d2·2)
Winning blow: rook to g7 (g5)
Winning blow: queen to c5 (b4)
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