Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: pawn to c5 (d4·13)
Winning blow: bishop to c4 (f1·3)
Winning blow: pawn to c3 (d2·2)
Winning blow: bishop to e7 (d6·3)
Winning blow: knight to c1 (b3·2)
Winning blow: queen to e7 (e3·2)
Attack on the uncastled king: knight to d5 (f4·4)
Winning blow: queen to e5 (h2)
Winning blow: queen to f6 (f3·4)
Winning blow: bishop to g7 (b2·3)
Winning blow: knight to d5 (f4·5)
Winning blow: bishop to a3 (b4·2)
Winning blow: queen to c6 (b5·5)
Winning blow: pawn to e3 (f2·3)
Attack on the uncastled king: rook to a5 (a1·9)
Winning blow: knight to f1 (g3·2)
Winning blow: queen to b8 (b4·2)
Winning blow: rook to g7 (g3·5)
Attack on the uncastled king: pawn to c4 (b3·43)
Winning blow: queen to c5 (d6·2)
Attack on the uncastled king: bishop to d5 (h1·31)
Winning blow: pawn to g7 (f6·2)
Winning blow: rook to d4 (c4·2)
Attack on the uncastled king: rook to f2 (f1·7)
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