ChessRanger
Endgame

Wrong rook pawn

A rook's pawn plus a bishop that can't control the promotion square — a notorious drawn exception.

With a bishop and a rook's pawn (a- or h-file), if the bishop does not control the pawn's promotion square, the ending is drawn no matter the extra material: the defending king simply sits in the corner and can't be driven out. The bishop is the 'wrong' colour for that pawn.

It's one of the most important known exceptions in the endgame — a whole extra piece and pawn can be a dead draw. Recognising it stops you from trading into a drawn ending or missing a saving resource when defending.

Why it matters

This exception overrides normal material counting — knowing it saves lost games and stops you heading for a 'winning' ending that's actually a draw.

The mistake everyone makes

Trading down into a bishop-and-rook-pawn ending a full piece up, only to find the defender's king holds the corner forever.

Related terms

Wrong bishop
A bishop that doesn't control the queening square of a rook's pawn — a famous drawn fortress.
Fortress
A drawn setup the stronger side cannot break down despite being materially ahead.
Opposition
Kings facing each other with one square between them; the side NOT to move usually holds the advantage.
Philidor position
The fundamental drawing technique in rook endgames — the third-rank defence.

See Wrong rook pawn in your own games

Play the engine, train tactics, and analyse your games — ChessRanger points out these patterns as they come up so the word turns into a skill. Free to start.

Start playing