Pin vs Skewer in Chess: What Is the Difference?

For a beginner comparing pin vs skewer, look at which piece is in front. A pin restricts a piece because moving it would expose something behind it. A skewer attacks a valuable piece first so that, when it moves away, a second piece behind it can be captured. Both patterns depend on an open line of attack.

Rooks use ranks and files; bishops use diagonals; queens can use either. The glossary guides to pins and skewers explain these patterns. The small practice positions below are original examples, not games played by academy students.

A pin: the front piece is shielding something

Set up White’s king on h1 and rook on e1, with Black’s knight on e7 and king on e8. Leave every other square empty. It is Black to move. The rook attacks along the e-file, but the knight stands between it and the king.

Black cannot move this knight: every knight move would uncover an attack on its own king. This is an absolute pin. The FIDE Laws of Chess prohibit a move that leaves or exposes your own king in check.

Be careful with the shortcut “a pinned piece cannot move.” In other positions, a pinned rook or bishop might move along the same line or capture the attacker while keeping its king safe. Always check the resulting position.

A relative pin is a choice, not a ban

Change the setup: put Black’s king on a8, queen on e8 and knight on e7. Keep White’s king on h1 and rook on e1. The knight now shields the queen rather than the king. A knight move can be legal, but it may leave the queen available to the rook.

This is a relative pin. Sometimes a player can accept that consequence because they have a stronger threat. Before taking a piece that appears free, check whether your own king is in danger.

A skewer: the valuable front piece moves away

For a separate exercise, use White king h1 and rook d1, Black king e5 and queen e8, with White to move. All other squares are empty. White plays 1. Re1+, checking the king along the e-file.

After the example reply 1...Kd4, White plays 2. Rxe8 and captures the queen. The king was the first target; the queen was behind it. Kd4 is one legal reply, not the only possible king move. In this position, the queen cannot remove or block the rook’s check.

Check the tactic before trusting its name

• Trace the whole line. Is another piece blocking it?

• Identify the front and rear targets. Is the king involved?

• Look for a legal capture of the attacking piece.

• After a target moves, check whether the planned capture is actually worthwhile.

A pin can be useful because it limits movement, even when it wins nothing immediately. A skewer may fail if the attacker can be captured. Naming the pattern is the beginning of the calculation.

To practise pin vs skewer, explain the order of the targets before moving. Then compare these line attacks with a knight fork, which attacks two targets with one piece. Our puzzle-solving guide shows how to check the opponent’s reply.

Book a free Project64 online demo if you would like help identifying which beginner ideas your child is ready to practise.

Replay the rook skewer

Use the starting-position button to return to the four-piece setup. Step through Re1+, Kd4 and Rxe8, noticing when the path to the queen becomes clear.