What is a skewer in chess?

A skewer, also called an x-ray attack, is a tactic where a long-range piece — a rook, bishop, or queen — attacks two enemy pieces on the same line. The more valuable piece stands in front and must move, exposing the weaker piece behind it to capture. Skewers are the reverse of pins: in a pin the weaker piece leads, while in a skewer the stronger piece leads.

What is the difference between a skewer and a pin?

In a pin, the less valuable piece is in front and shields a more valuable piece behind it, so the front piece cannot move safely. In a skewer, the more valuable piece is in front, and the attacker forces it away to expose a weaker piece. Both use long-range pieces along open lines, but a skewer is often described as a reversed pin.

How do I win a rook endgame?

Rook endgames are decided by rook activity, king centralization, and control of open files. Activate your rook, cut off the enemy king, and look for forcing tactics such as checks that skewer the opposing rook or win material. Once ahead, simplify and convert using classic techniques like the Lucena and Philidor positions, where tablebases can confirm the winning path move by move.

How do I spot a skewer during a chess game?

Look for two enemy pieces aligned on the same file, rank, or diagonal, with the more valuable piece in front. A skewer usually starts with a forcing check or threat that drags the front piece off the line. In endgames, also ask which of your opponent's pieces is defending another along a line. Building the habit of scanning open lines before every move makes these patterns stand out.

What is a tablebase in chess?

A tablebase is a database of solved endgame positions that records the perfect move and the number of moves to convert or mate for every legal position with few pieces. In a four-piece rook endgame, a tablebase can confirm a forced win dozens of moves deep. Puzzle sites and engines use tablebases to grade endgame puzzles and prove whether a position is truly winning, drawing, or losing.

How can I get better at chess endgames?

Practice endgame puzzles — especially rook endgames and king-and-pawn endings — and study the Lucena and Philidor techniques. Learn to identify forcing tactics like skewers and discovered checks, and use tablebases to verify your play in simplified positions. Solving daily endgame puzzles and reviewing your finished games are two of the fastest ways to sharpen endgame technique.

Skewer Advanced Puzzle (Rated 905): Skewer

Skewer Advanced Puzzle (Rated 905): Skewer — Rook Endgame

A skewer is a tactic where a long-range piece attacks two enemy pieces on the same line — the more valuable one in front, the weaker one behind it. When the front piece moves, the piece behind is lost. In this endgame, material is level and both sides have a single rook, but activity is everything. Black's rook is aggressively placed on an open file while White's rook sits on a file that runs straight back to its own king. One forcing check lines the rooks up and wins a full rook, converting equal material into a decisive material gain. It is a textbook rook-endgame skewer.