Skewer: rook to g7
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The tactical motive
Skewer: a valuable piece is forced to move, exposing the one behind it.
Difficulty 816 ShuffleRating — for beginners taking their first steps in Chess960 tactics.
White to move — find the best continuation
How to recognize this tactic
A skewer is a pin reversed — the valuable piece stands in front and, when it moves, the piece behind falls. Line your rook, bishop or queen up against the king or queen and win whatever is hiding behind it.
General method: before you move, list the forcing candidates — every check, every capture, every direct threat — and calculate those first. The solution to a tactic is almost always among them.
Position on the board
White: king d3, rook b7, pawn b3 c4 a5.
Black: king g4, rook f4, bishop g1, pawn a7.
5 white and 4 black pieces are on the board; the puzzle position arises after move 40.
The position in numbers
Black are ahead by 1 points of material (8 against 9; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on d3, the black king on g4.
It is White to move on move 40, with 18 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 3 pawns, Black 1. Files fully open (no pawns of either colour): d, e, f, g, h — natural highways for the rooks and queen.
The White king has 4 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
40. Rg7+ Kf5 41. Rxg1
Why it works
- Great move! rook to g7 keeps the pressure (+4.5).
- Well found: rook to g1 (+4.9).
- You win a piece — the bishop.
- If instead Kf5, then Rxg1 and you win the bishop.
Move by move
- 40. Rg7+ — rook to g7 with check
- Kf5 — king to f5
- 41. Rxg1 — rook to g1 (capture)
Types in this puzzle
Skewer
A line attack forces the valuable piece to move, exposing the one behind it.
A skewer is a pin turned inside out: the valuable piece stands in front and something cheaper hides behind it. The big piece must step aside, and you collect the one that was sheltering in its shadow. Scan for the enemy king or queen sharing a file, rank or diagonal with another enemy piece. The deadliest version comes with check — the king moves, the rook behind it dies.
Endgame tactic
Tactics live in the endgame too — strike while material is scarce.
Tactics do not retire when the queens come off: forks, pins and double attacks live on in the endgame. With so little material left, every tactical loss is almost always decisive. The signs are the usual ones — undefended pieces, king and piece on one line, a pawn about to promote. Even in a "technical" ending, scan for a shot before every move, both yours and your opponent's.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 003
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