Chess960 puzzles: Royal fork
A fork with check: the king must move, and the second piece is lost.
3622 puzzles
Winning blow: queen to g7 (d7·2)
Attack on the uncastled king: queen to d5 (g2·5)
Attack on the uncastled king: bishop to c6 (a4·3)
Winning blow: queen to d5 (g8·3)
Attack on the uncastled king: knight to d6 (e4·20)
Winning blow: queen to g7 (e5·5)
Winning blow: knight to c6 (d4·13)
Winning blow: rook to h4 (h3·2)
Attack on the uncastled king: knight to e6 (d4·22)
Attack on the uncastled king: queen to c5 (e3·3)
Winning blow: queen to f7 (g7)
Winning blow: knight to d7 (f6·8)
Attack on the uncastled king: knight to e6 (g7·5)
Winning blow: knight to d6 (e4·12)
Attack on the uncastled king: bishop to f7 (g6·4)
Winning blow: queen to c7 (h7·3)
Winning blow: queen to f7 (e6)
Winning blow: queen to c8 (a6)
Winning blow: queen to b7 (b6·3)
Winning blow: queen to h7 (g6)
Winning blow: rook to e8 (e1·18)
Attack on the uncastled king: rook to f6 (f3·2)
Attack on the uncastled king: queen to e5 (f5)
Winning blow: queen to d7 (d2·6)
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Tactics
BatteryCheck chaseClearanceDecoyDeflectionDiscovered attackDiscovered checkDouble checkWinning exchangeBishop forkKnight forkPawn forkQueen forkRook forkHanging pieceInterferenceOverloadAbsolute pinRelative pinWin the pinned piecePromotionQueen trapQuiet moveRemove the defenderSacrifice attackSkewerTrapped pieceUnderpromotionWinning blowX-rayZwischenzug