Chess960 puzzles: X-ray
A long-range piece acts through an enemy piece on the same line.
An X-ray lets a long-range piece act through an enemy piece standing on the same line — its power shines straight through. The square behind looks safe or defended, and that illusion is exactly what the tactic exploits. Check your rooks, bishops and queens: is a key square or a target hiding behind an enemy piece on their line? When counting captures on a square, include the X-ray attackers — they join the fight the moment the line opens.
161 puzzles
Attack on the uncastled king: bishop to d8 (b6·2)
Winning blow: bishop to c8
Attack on the uncastled king: bishop to b8 (g3·2)
Attack on the uncastled king: bishop to b8 (g3·3)
Winning blow: bishop to g8
Attack on the uncastled king: bishop to f6 (g5)
Attack on the uncastled king: rook to a8 (a5)
Attack on the uncastled king: bishop to e8 (c6)
Attack on the uncastled king: bishop to f8 (c5)
Attack on the uncastled king: rook to h8 (h7)
Attack on the uncastled king: bishop to e4 (b1·12)
Attack on the uncastled king: bishop to g6 (h5·2)
Winning blow: bishop to h8 (d4·2)
Attack on the uncastled king: bishop to d6 (c5·2)
Attack on the uncastled king: bishop to d8 (a5·5)
Winning blow: bishop to b8 (h2)
Attack on the uncastled king: bishop to e6 (d5·2)
Mate in 2: rook to c1 (c8·2)
Attack on the uncastled king: knight to d7 (c5·5)
Winning blow: bishop to e5 (a1·2)
Attack on the uncastled king: bishop to h8 (a1·26)
Winning blow: rook to c4 (f4)
Winning blow: bishop to c6 (b5)
Attack on the uncastled king: rook to e5 (e1·2)
Tactics
BatteryCheck chaseClearanceDecoyDeflectionDiscovered attackDiscovered checkDouble checkWinning exchangeBishop forkKnight forkPawn forkQueen forkRook forkRoyal forkHanging pieceInterferenceOverloadAbsolute pinRelative pinWin the pinned piecePromotionQueen trapQuiet moveRemove the defenderSacrifice attackSkewerTrapped pieceUnderpromotionWinning blowZwischenzug