Clearance: Getting Your Own Piece Out of the Way

Clearance is a tactic where you move one of your own pieces, often with tempo or as a sacrifice, to vacate a square, file, rank, or diagonal that another of your pieces needs.

How clearance works

Sometimes the only thing stopping your winning move is your own piece. A rook would mate on the back rank, but your bishop sits on the file. A knight would fork from a square your pawn occupies. Clearance is the art of removing that obstacle quickly enough that the opponent cannot use the extra time.

Because a plain retreat gives the opponent a free move, good clearance moves are forcing. The piece that steps away usually gives check, captures something, or makes a threat, so the opponent has to respond and the follow-up arrives with no time to defend.

What to look for

Start by imagining the board without one of your own pieces. If a powerful move suddenly appears, that piece is in the way. Typical cases are a bishop or knight standing on an open file in front of your queen or rook, a pawn blocking a diagonal aimed at the king, or a piece occupying the exact square from which a knight could fork.

Then ask where the obstructing piece can go with force. The best clearance moves do two jobs at once: they open the line and they also capture or deflect a defender. A clearance capture that removes a guard of the very square you want to use is especially strong.

Common mistakes

The usual error is not seeing the idea at all, because our pieces feel like assets, not obstacles. A second error is clearing the line slowly: if the obstructing piece retreats quietly, the defender simply covers the square. Finally, check what happens after the clearance. If the opponent can recapture in a way that also guards the key square, the trick fails.

If you notice that your own pieces keep blocking your best lines in your games, that pattern is worth practising until the clearance move comes to mind first.

How to spot it

  • Mentally remove each of your pieces and see what new moves appear.
  • Watch for your own pieces standing on files or diagonals aimed at the king.
  • Make the clearing move forcing: a check, capture, or threat.
  • Prefer clearance moves that also remove a defender of the target square.
  • Confirm the opponent's reply cannot cover the square you just opened.

Try one

Work it out from the diagram first, then play it on the board or open the solution.

Example 1

Black to move and mate in two.

Show solution

9...Bxc3+ 10.Qxc3 Qd1#

Black's queen on d8 would love to land on d1, but its own bishop on d4 blocks the d-file and White's knight on c3 also guards d1. Bxc3+ solves both problems at once: it clears the file and removes the knight, with check. After Qxc3 (bxc3 changes nothing), Qd1# is mate, since d1 is supported by the bishop on g4 and the king on e1 has no escape.

Position from a real game, via the Lichess puzzle database.

Related patterns

More tactics