Chess960 puzzles: Relative pin
A piece shields a more valuable one behind it — moving it loses material.
511 puzzles
Attack on the uncastled king: queen to c4 (e4·2)
Winning blow: queen to h8 (b2·3)
Attack on the uncastled king: knight to e5 (f3·17)
Attack on the uncastled king: king to f2 (g1·10)
Winning blow: queen to a6 (e2·2)
Winning blow: queen to d5 (c5·4)
Winning blow: rook to g5 (f5)
Winning blow: pawn to d6 (c5·8)
Attack on the uncastled king: bishop to e5 (h2·3)
Winning blow: rook to e6 (e1·14)
Winning blow: knight to c5 (d3·13)
Winning blow: queen to a7 (c5·4)
Winning blow: bishop to d2 (c3·2)
Winning blow: queen to d6 (d4·2)
Winning blow: queen to d6 (d3·3)
Attack on the uncastled king: bishop to h6 (e3·4)
Winning blow: bishop to d4 (b2·5)
Attack on the uncastled king: knight to f2 (d3·4)
Winning blow: bishop to d5 (h1·13)
Winning blow: rook to e3 (e1·11)
Attack on the uncastled king: pawn to g5 (h4·30)
Attack on the uncastled king: knight to d1 (e3·2)
Attack on the uncastled king: rook to d7 (d1·6)
Winning blow: bishop to c6 (e4·8)
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