Skewer: rook to g3 (g1)
li-03R4Gnaming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Skewer: a valuable piece is forced to move, exposing the one behind it.
Difficulty 1013 ShuffleRating — club-player level.
Black 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 a3, pawn a2 g4 f5.
Black: king e5, rook g1, pawn f7.
5 white and 3 black pieces are on the board; the puzzle position arises after move 45.
The position in numbers
White are ahead by 2 points of material (8 against 6; 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 e5.
It is Black to move on move 45, with 15 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): b, c, d, e, h — natural highways for the rooks and queen. Half-open for Black: a, g.
The Black king has 4 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
45... Rg3+ 46. Ke2 Rxa3
Why it works
- Great move! rook to g3 keeps the pressure (+6.6).
- Well found: rook to a3 (+8.7).
- You win a piece — the rook.
- If instead Ke2, then Rxa3 and you win the rook.
Move by move
- 45… Rg3+ — rook to g3 with check
- 46. Ke2 — king to e2
- Rxa3 — rook to a3 (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.
Rook endgame
The most common endgame — activity decides everything.
The rook endgame is the most common of all: rooks and pawns on the board. Its first law is activity — a rook behind a passed pawn beats a rook passively babysitting one. The sign of a correct plan is that your rook is attacking something, not guarding something. The typical error is locking your rook into defense: it is often better to give up a pawn and keep your rook and king active.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 006
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