Key squares are the squares that win as soon as the attacking king stands on one, whoever is to move. For a pawn on its second to fourth rank, they are the three squares two ranks ahead.

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The key squares of the pawn on d4 are c6, d6 and e6. Kd6 puts the white king on one, and White wins whoever moves next.

Key squares turn the vague plan of getting the king forward into a target you can count moves to. Reach one and the pawn queens; miss them all and the defender can draw.

How to do it

  1. 1For a pawn on its fourth rank or lower, find the three squares two ranks ahead.
  2. 2Walk your king to one of them, using the opposition if the enemy king blocks the way.
  3. 3Push the pawn only once your king stands on a key square.

For your level

Some squares in front of your pawn win the game. Get your king there first. Push the pawn afterwards.

Check you have it

Question 1 of 1

Which white pawn has no friendly pawn on either neighbouring file?

Common mistakes
  • Pushing the pawn onto the key square instead of putting the king there.
  • Counting key squares for a rook's pawn as if it were any other pawn.
Questions
Do key squares work for a rook's pawn?
Yes, but they are different. For an a-pawn the key squares are b7 and b8, and for an h-pawn g7 and g8. If the defending king reaches the corner first, it is a draw.
How are key squares different from the opposition?
Key squares are the target. The opposition is how your king gets past the defending king to reach one.

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