Bishop vs Connected Pawns: Where the Defending King Belongs

Black to play and draw

Play

Same game, two moves later, and now you defend. The natural-looking plan, running the king around to block the pawns from the front, loses. The bishop belongs on the long a8 to h1 diagonal, and the king belongs beside the pawns, not in front of them.

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Do Not Put the King In Front of the Pawns

Black to play and draw · Hold the draw against perfect play

Waking the engine…

The theory

Facing connected passed pawns with a bishop, the two pieces have separate jobs, and swapping them loses.

The bishop takes the long diagonal. It has to eye the rook pawn's queening square from far away, here a8 along the a8 to h1 line. From there it can drop in front of the pawn when the pawn commits.

The king does not go in front. Running the king around to c8 or b8 leaves it doing nothing, and this game is the proof: Kd7 and Kc8 lose, while keeping the king next to the b-pawn draws.

The final resource. With the bishop on a8, capturing it entombs the attacking king in the corner and the defender picks off the other pawn.

Why it loses: autopilot. When the defending king does run in front of the pawns, the attacker wins on autopilot. His king steps past to a6 and a7, shields the queening square with its own body, and the pawns march in behind it.

In this drill two pawns roll at you. Put each piece where it belongs.

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All 24 bishop endgames positionsFollow the full curriculum (free)