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: queen to g5 (d2·4)
Mate in 3: rook to e8 (e6·3)
Mate in 3: knight to d7 (e5·4)
Mate in 3: bishop to g4 (h5)
Mate in 3: queen to g6 (g1)
Mate in 3: pawn to d8 (d7·2)
Mate in 3: bishop to d4 (e3)
Mate in 3: queen to a8 (g2·2)
Attack on the uncastled king: rook to b8 (b3·5)
Mate in 3: pawn to d6 (d5·2)
Mate in 3: rook to a1 (b1·4)
Mate in 3: rook to h8 (h1·5)
Mate in 3: queen to e8 (c6·4)
Mate in 3: queen to d6 (e5·5)
Mate in 3: queen to d2
Mate in 3: knight to d7 (e5·5)
Mate in 3: rook to f6 (f7)
Mate in 3: bishop to f6 (g7)
Mate in 3: queen to d4 (d5·2)
Mate in 3: queen to f8 (e7·3)
Mate in 3: bishop to a3 (b2)
Mate in 3: knight to c7 (d5·2)
Mate in 3: rook to c6 (b6)
Mate in 3: knight to d6 (c4·2)
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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