Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Attack on the uncastled king: bishop to f7 (c4)
Winning blow: bishop to e5 (d4·3)
Winning blow: king to e3 (d2)
Attack on the uncastled king: knight to c7 (e8)
Winning blow: knight to c6 (e5·10)
Attack on the uncastled king: bishop to a1 (d4)
Attack on the uncastled king: rook to c8 (c1·11)
Attack on the uncastled king: knight to f1 (g3·3)
Attack on the uncastled king: rook to g8 (g1·6)
Winning blow: knight to e7 (d5·14)
Winning blow: rook to c1 (a1·2)
Winning blow: rook to f6 (f5)
Winning blow: pawn to d4 (e3·5)
Winning blow: rook to c5 (c1·5)
Attack on the uncastled king: bishop to a8 (b7·2)
Attack on the uncastled king: knight to e7 (d5·13)
Winning blow: queen to f6 (c3·3)
Winning blow: rook to c3 (a3)
Attack on the uncastled king: pawn to e6 (f5·22)
Winning blow: queen to d1 (e1·3)
Winning blow: rook to f7 (f4·2)
Winning blow: queen to b8 (a7)
Winning blow: knight to c6 (d4·4)
Winning blow: knight to f7 (g5·3)
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