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Good and bad bishops

A bishop is only as good as its diagonals.

A bishop lives on diagonals, so its value depends on how open those diagonals are. A bishop blocked in by its own pawns — pawns fixed on the same colour it travels — is a 'bad' bishop with nowhere to go. A bishop with clear lines and real targets is a 'good' one.

The practical rule follows from this: keep your pawns on the opposite colour to your bishop. If you're stuck with a bad bishop, free it with a pawn break or trade it off.

  • Pawns on the bishop's colour block its diagonals.
  • Place your pawns on the opposite colour to your bishop.
  • A bad bishop won't improve on its own — free it or trade it.
White's bishop sits OUTSIDE its pawn chain on an open diagonal — a good bishop. Black's would-be bishop is hemmed by pawns on d5/e6/f7 (its own colour) — the textbook bad bishop.