Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Attack on the uncastled king: rook to a4 (a1)
Attack on the uncastled king: queen to c4 (d4)
Attack on the uncastled king: knight to h2 (f1)
Attack on the uncastled king: bishop to e8
Attack on the uncastled king: bishop to b5 (c4)
Winning blow: knight to h2
Attack on the uncastled king: queen to d3 (e2)
Winning blow: pawn to d3 (c2·2)
Attack on the uncastled king: bishop to c3
Attack on the uncastled king: queen to e8 (e1·3)
Attack on the uncastled king: rook to a4 (a1·2)
Attack on the uncastled king: knight to d4 (e2·2)
Winning blow: king to f2 (e1)
Attack on the uncastled king: rook to a3
Attack on the uncastled king: pawn to f4 (g3·12)
Attack on the uncastled king: king to f2 (g1·2)
Attack on the uncastled king: bishop to a1
Attack on the uncastled king: rook to e3 (g3)
Attack on the uncastled king: bishop to d5 (h1)
Attack on the uncastled king: pawn to e4 (d3·7)
Attack on the uncastled king: queen to e4 (e2)
Winning blow: queen to c3 (b3)
Attack on the uncastled king: knight to b5 (c3·3)
Attack on the uncastled king: knight to e4 (c3)
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