Chess960 puzzles: Bishop fork
The bishop attacks two pieces on crossing diagonals at once.
A bishop fork happens when the bishop lands where two diagonals cross and attacks a target on each of them. Both victims must stand on the bishop's color — that is the first thing to verify. Scan for loose enemy pieces that share the color of squares with their own king or queen. A common sin is placing your own pieces on squares of one color and handing your opponent exactly this geometry.
71 puzzles
Attack on the uncastled king: bishop to d7 (a4·2)
Attack on the uncastled king: bishop to g7 (c3)
Attack on the uncastled king: bishop to d5 (h1·21)
Attack on the uncastled king: bishop to c6 (h1·10)
Winning blow: bishop to g6 (b1·4)
Attack on the uncastled king: bishop to c7 (f4·5)
Winning blow: bishop to c6 (e4)
Attack on the uncastled king: bishop to f6 (b2·4)
Winning blow: bishop to c7 (b6·2)
Attack on the uncastled king: bishop to e7 (c5·2)
Winning blow: bishop to b4 (e7)
Winning blow: bishop to c6 (e4·2)
Attack on the uncastled king: bishop to f6 (e5·2)
Attack on the uncastled king: bishop to b7 (h1·11)
Winning blow: bishop to e7 (h4)
Winning blow: bishop to b5 (a4)
Winning blow: bishop to e5 (d4·3)
Attack on the uncastled king: bishop to d2 (c3)
Winning blow: bishop to b2 (d4·2)
Winning blow: bishop to e5 (f4·3)
Winning blow: bishop to c5 (g1·5)
Attack on the uncastled king: pawn to d6 (e5·20)
Attack on the uncastled king: bishop to c6 (b5·3)
Winning blow: bishop to b8 (f4·3)
Tactics
BatteryCheck chaseClearanceDecoyDeflectionDiscovered attackDiscovered checkDouble checkWinning exchangeKnight forkPawn forkQueen forkRook forkRoyal forkHanging pieceInterferenceOverloadAbsolute pinRelative pinWin the pinned piecePromotionQueen trapQuiet moveRemove the defenderSacrifice attackSkewerTrapped pieceUnderpromotionWinning blowX-rayZwischenzug