Opposite Bishops: Central and Rook Pawn Draw

Black to play and draw

Play

An a-pawn and a d-pawn, two files apart, and you hold. Your bishop already owns a7, in front of the rook pawn, and no one can ever evict it. The whole game is about one square: b7, the only door the attacking king can aim for.

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Central and Rook Pawn: Deny b7

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

Waking the engine…

The theory

When separated passed pawns are an a-pawn and a d-pawn, two files apart, the defender needs only a little care to draw. The bishop sits in front of the rook pawn on a7, where it can never be driven off, and the defense turns on a single square.

One door only. The attacking king cannot come around the queenside, and the corridor between the pawns is too narrow to pass. Its one route runs around the defender's king toward b7, and that is the square to deny.

Shadow and check. Meet the king's advance by keeping your king in front of it, for example Kf5 met by Ke7, and refuse it the e8 square. When it tries to squeeze past, checks from a7 and b8 send it back. The bishop stays anchored on the a7-b8 corner throughout.

In this drill White will maneuver the king toward b7. Keep your king opposite his, guard b7, and the win never materializes.

Keep going

All 19 opposite bishops positionsFollow the full curriculum (free)