Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: rook to a7 (a1·4)
Winning blow: knight to g5 (h3·6)
Attack on the uncastled king: knight to d4 (f3·13)
Winning blow: rook to a2 (a1)
Attack on the uncastled king: rook to c7 (c3)
Winning blow: queen to e7 (g5·3)
Winning blow: knight to d6 (b5·11)
Attack on the uncastled king: queen to g7 (a1·9)
Winning blow: rook to d8 (d3·4)
Winning blow: king to c1 (c2·4)
Winning blow: bishop to a7 (f2·2)
Attack on the uncastled king: pawn to f6 (g5·18)
Winning blow: pawn to c5 (b4·12)
Winning blow: rook to e8 (e1·12)
Winning blow: rook to d8 (d1·14)
Attack on the uncastled king: pawn to c6 (d5·36)
Winning blow: pawn to d3 (c2·17)
Winning blow: pawn to d6 (d5·5)
Winning blow: pawn to b5 (a4·10)
Winning blow: knight to d8 (e6·5)
Attack on the uncastled king: queen to b1 (c1·2)
Winning blow: rook to e8 (e1·13)
Winning blow: rook to h1 (f1·5)
Winning blow: rook to e6 (e1·14)
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