Weak Squares

A weak square is a square that none of your pawns can ever defend again, because the pawns that could have guarded it have moved past it or gone.

Black's pawns are on d6 and f5 and Black has no e-pawn, so no black pawn can ever attack e6. White's knight there, defended by the pawn on d5, cannot be chased away.

Pawns never move backwards, so a square left unguarded by pawns stays that way. Pieces can cover it, but pieces get traded and have other work. An enemy piece on a weak square can stay there for a long time.

How to do it

  1. 1Before you push a pawn, check which squares it stops guarding.
  2. 2Look for weak squares in the opponent's camp, especially near the king.
  3. 3Put a piece there, a knight first, where it cannot be traded off cheaply.

For your level

Pawns cannot move backwards. Before pushing one, see which squares it stops guarding.

Check you have it

Question 1 of 1

Which file has no pawns of either colour standing on it?

Common mistakes
  • Pushing pawns in front of your own king and leaving squares that can never be guarded again.
  • Putting a piece on a weak square where it is traded off at once.
Questions
Are all weak squares serious?
No. A weak square matters only if the opponent can bring a piece to it and keep it there.

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