Chess Puzzle #XunHD — Expert, White to move, endgame

Position

White: king f1; bishop f6; pawns a2/g6. Black: king c7; rook a3; pawn c6. Black is ahead by 1 point of material. White to move.

Solution (3 moves)

1. Opponent setup: Rxa2 — rook a3→a2, captures pawn. Now White to move.
2. Best move: Bd8+ — bishop f6→d8, gives check. Opponent replies Kxd8 (king c7→d8, captures bishop).
3. Best move: g7 — pawn g6→g7. Opponent replies Ra5 (rook a2→a5).
4. Best move: g8=Q+ — pawn g7→g8, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, long, promotion, sacrifice. The key move is Bd8+.

Position data

FEN: 8/2k5/2p2BP1/8/8/r7/P7/5K2 b - - 0 40

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