Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Attack on the uncastled king: queen to h8 (h5·2)
Winning blow: rook to c7 (c6·2)
Winning blow: rook to d4 (d2)
Winning blow: queen to c5 (f5)
Winning blow: knight to c5 (d3·11)
Winning blow: queen to c6 (c2·3)
Attack on the uncastled king: queen to c7 (c3·3)
Attack on the uncastled king: queen to c3 (c2)
Attack on the uncastled king: bishop to a7 (e3·4)
Winning blow: queen to d6 (d5·3)
Winning blow: knight to e6 (d4·9)
Attack on the uncastled king: knight to d7 (c5·18)
Attack on the uncastled king: rook to e3 (e1·4)
Winning blow: queen to e6 (e3·3)
Attack on the uncastled king: bishop to b6 (e3·3)
Attack on the uncastled king: queen to d7 (f5·4)
Winning blow: bishop to f2 (e3·3)
Winning blow: bishop to c6 (e4·6)
Winning blow: queen to c6 (d5·4)
Winning blow: queen to g6 (g3·3)
Winning blow: queen to c6 (g2·2)
Attack on the uncastled king: rook to f5 (f1·9)
Attack on the uncastled king: queen to e8 (e3·3)
Winning blow: knight to c5 (e6·6)
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