A knight fork is a knight move that attacks two enemy pieces at once. Knights attack in an L-shape, so the pieces it hits often cannot defend each other.

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Nc5+ checks the king and attacks the rook on a4. The king must step away, and Nxa4 wins the rook.

A knight is worth about three pawns. When it forks a king and a rook, the king must move and the rook is lost. Knight forks are the most common tactic in beginners' games.

How to do it

  1. 1Look for two enemy pieces a knight's jump from the same empty square.
  2. 2Check the square: if a pawn or piece can take your knight there, it may fail.
  3. 3A fork with check works best, because the king must answer first.

For your level

The knight jumps like an L. It can hit two pieces at once. That is called a fork.

Common mistakes
  • Forking two pieces when the knight itself can be taken on that square.
  • Missing your opponent's fork: before each move, check where their knights can jump.
Questions
Why are knight forks so common?
A knight attacks squares that bishops, rooks and queens cannot, and its attacks cannot be blocked. Two pieces that look safe from each other are often a single knight jump apart.

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