Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: bishop to d4 (a1·3)
Attack on the uncastled king: rook to b1 (d1)
Winning blow: queen to g8 (d5·3)
Attack on the uncastled king: queen to d1 (f1)
Attack on the uncastled king: queen to h4 (h3·4)
Winning blow: rook to e8 (b8)
Winning blow: queen to h6 (d2·2)
Winning blow: queen to g4 (g5·2)
Winning blow: queen to g4 (d4)
Winning blow: queen to c8 (e6)
Winning blow: queen to g5 (c1·7)
Winning blow: queen to e6 (f6·2)
Winning blow: rook to e6 (e1·7)
Attack on the uncastled king: rook to d8 (d3)
Attack on the uncastled king: bishop to d5 (b3·5)
Winning blow: knight to c8 (e7·6)
Winning blow: knight to a5 (c6·3)
Winning blow: rook to f5 (f4)
Winning blow: king to d2 (e1·14)
Winning blow: queen to a6 (d3·3)
Winning blow: bishop to e3 (c1)
Winning blow: queen to c7 (h2·2)
Winning blow: rook to c5 (c1·8)
Attack on the uncastled king: rook to c8 (c1·12)
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