Chess Puzzle #9O1Jm — Expert, Black to move, middlegame

Position

White: king g1; bishop e4; pawns d3/d7/g3/h3. Black: king h7; rook c2; pawns a3/e5/f7/g6/h6. Black is ahead by 3 points of material. Black to move.

Solution (5 moves)

1. Opponent setup: d8=Q — pawn d7→d8, promotes to queen. Now Black to move.
2. Best move: a2 — pawn a3→a2. Opponent replies Bxg6+ (bishop e4→g6, captures pawn, gives check).
3. Best move: Kg7 — king h7→g7. Opponent replies Qa5 (queen d8→a5).
4. Best move: Rc1+ — rook c2→c1, gives check. Opponent replies Kf2 (king g1→f2).
5. Best move: a1=Q — pawn a2→a1, promotes to queen. Opponent replies Qxa1 (queen a5→a1, captures queen).
6. Best move: Rxa1 — rook c1→a1, captures queen.

Tactical themes

advanced pawn, advantage, defensive move, endgame, exposed king, promotion, very long. The key move is a2.

Position data

FEN: 8/3P1p1k/6pp/4p3/4B3/p2P2PP/2r5/6K1 w - - 0 35

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