Chess Puzzle #ORoJt — Expert, Black to move, endgame

Position

White: king b7; queen h8; pawns a5/b4. Black: king d7; queen d8; bishop e7; pawns e4/g4. Black is ahead by 3 points of material. Black to move.

Solution (5 moves)

1. Opponent setup: Qxd8+ — queen h8→d8, captures queen, gives check. Now Black to move.
2. Best move: Bxd8 — bishop e7→d8, captures queen. Opponent replies a6 (pawn a5→a6).
3. Best move: g3 — pawn g4→g3. Opponent replies a7 (pawn a6→a7).
4. Best move: g2 — pawn g3→g2. Opponent replies a8=Q (pawn a7→a8, promotes to queen).
5. Best move: g1=Q — pawn g2→g1, promotes to queen. Opponent replies Qc8+ (queen a8→c8, gives check).
6. Best move: Ke7 — king d7→e7.

Tactical themes

advanced pawn, crushing, defensive move, endgame, promotion, very long. The key move Bxd8 wins material.

Position data

FEN: 3q3Q/1K1kb3/8/P7/1P2p1p1/8/8/8 w - - 15 71

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