Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: bishop to b6 (g1)
Winning blow: knight to d7 (c5·6)
Winning blow: pawn to e4 (d3·7)
Winning blow: pawn to a5 (b4·2)
Winning blow: rook to d8 (d1·5)
Winning blow: rook to d6 (d1·2)
Attack on the uncastled king: queen to b2 (a1·6)
Winning blow: rook to d3 (a3)
Winning blow: rook to c7 (c1·6)
Attack on the uncastled king: rook to e4 (e3)
Winning blow: queen to d4 (b6)
Winning blow: rook to e1 (f1)
Winning blow: rook to d6 (c6)
Winning blow: queen to f5 (g5)
Winning blow: knight to c6 (e5·6)
Attack on the uncastled king: bishop to h8 (b2·8)
Winning blow: rook to d1 (g1)
Winning blow: rook to d6 (d1·3)
Winning blow: knight to h1 (g3·2)
Winning blow: rook to e3 (e6)
Winning blow: queen to d7 (f5)
Attack on the uncastled king: queen to e4 (h4)
Winning blow: rook to e7 (e1·2)
Attack on the uncastled king: pawn to c7 (d6·7)
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