Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: queen to c6 (h1·4)
Winning blow: rook to b6 (b3·2)
Winning blow: queen to a4 (a5)
Winning blow: rook to e4 (c4·2)
Attack on the uncastled king: rook to g7 (g1·2)
Attack on the uncastled king: queen to b7 (g2·2)
Winning blow: queen to d5 (d3)
Winning blow: queen to c2 (d3)
Winning blow: rook to c3 (c1·2)
Winning blow: queen to h8 (h7·5)
Winning blow: queen to e7 (d6·3)
Winning blow: queen to a4 (a7)
Winning blow: rook to b5 (b3)
Attack on the uncastled king: rook to d2 (d1·4)
Winning blow: queen to e3 (d3)
Attack on the uncastled king: queen to a5 (a4·2)
Attack on the uncastled king: queen to e4 (f4)
Winning blow: rook to f3 (g3·2)
Attack on the uncastled king: rook to c3 (h3)
Winning blow: queen to e2 (e4)
Attack on the uncastled king: rook to h4 (h1·21)
Winning blow: queen to a7 (a5·3)
Winning blow: queen to c3 (g3)
Attack on the uncastled king: rook to a8 (a1·3)
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