Chess960 puzzles: Royal fork
A fork with check: the king must move, and the second piece is lost.
3622 puzzles
Attack on the uncastled king: bishop to d5 (e4·4)
Attack on the uncastled king: knight to d6 (e4·8)
Winning blow: knight to e7 (f5·3)
Winning blow: queen to g7 (e5)
Winning blow: knight to e5 (d3·3)
Attack on the uncastled king: queen to d8 (g5·2)
Winning blow: bishop to d4 (b2·2)
Winning blow: queen to f8 (f3)
Winning blow: knight to e7 (g6)
Winning blow: knight to c8 (e7·3)
Winning blow: queen to a6 (a7·2)
Winning blow: queen to e4 (e5)
Winning blow: bishop to d5 (f7)
Winning blow: knight to e6 (c5·3)
Attack on the uncastled king: knight to e6 (d4·11)
Winning blow: queen to b6 (a6)
Winning blow: knight to e5 (f3·3)
Winning blow: knight to f6 (e4·2)
Winning blow: bishop to d5 (c4)
Winning blow: bishop to e2 (g4)
Attack on the uncastled king: queen to h8 (h7·3)
Attack on the uncastled king: queen to c8 (c2)
Winning blow: bishop to f6 (b2·2)
Winning blow: knight to c7 (d5)
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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