Chess960 puzzles: Relative pin
A piece shields a more valuable one behind it — moving it loses material.
511 puzzles
Attack on the uncastled king: bishop to b3 (c2·6)
Mate in 3: bishop to c6 (d5)
Mate in 3: queen to a8 (a2)
Mate in 3: queen to a4 (c4)
Mate in 3: queen to a7 (e3)
Mate in 3: rook to b1 (c1·2)
Mate in 3: rook to h8 (h1·4)
Mate in 3: rook to e6 (e1·2)
Mate in 3: queen to g3 (d3)
Mate in 3: knight to b6 (a4)
Mate in 3: rook to e8 (f8·3)
Mate in 3: rook to c8 (d8)
Mate in 3: queen to d8 (c8·4)
Mate in 3: queen to d6 (c5·2)
Mate in 3: queen to e4 (b7)
Mate in 3: queen to f5 (g5)
Mate in 3: pawn to d5 (c4)
Mate in 3: rook to g5 (g1)
Mate in 3: knight to e7 (d5·5)
Mate in 3: queen to d6 (g6)
Mate in 3: queen to f7 (f6·3)
Mate in 3: rook to e8 (e7·5)
Fork: queen to f5 (f3)
Winning blow: queen to e6 (f5·6)
Tactics
BatteryCheck chaseClearanceDecoyDeflectionDiscovered attackDiscovered checkDouble checkWinning exchangeBishop forkKnight forkPawn forkQueen forkRook forkRoyal forkHanging pieceInterferenceOverloadAbsolute pinWin the pinned piecePromotionQueen trapQuiet moveRemove the defenderSacrifice attackSkewerTrapped pieceUnderpromotionWinning blowX-rayZwischenzug