Chess Puzzle #9geWf — Intermediate, Black to move, endgame

Position

White: king b8; queen c8; pawns a5/b2/c3. Black: king f4; queen c6; pawns a6/b7/g5. Material is balanced. Black to move.

Solution (6 moves)

1. Opponent setup: Qxc6 — queen c8→c6, captures queen. Now Black to move.
2. Best move: bxc6 — pawn b7→c6, captures queen. Opponent replies Kb7 (king b8→b7).
3. Best move: g4 — pawn g5→g4. Opponent replies Kxa6 (king b7→a6, captures pawn).
4. Best move: g3 — pawn g4→g3. Opponent replies Kb7 (king a6→b7).
5. Best move: g2 — pawn g3→g2. Opponent replies a6 (pawn a5→a6).
6. Best move: g1=Q — pawn g2→g1, promotes to queen. Opponent replies a7 (pawn a6→a7).
7. Best move: Qg7+ — queen g1→g7, gives check.

Tactical themes

advanced pawn, crushing, endgame, master, promotion, quiet move, very long. The key move bxc6 wins material.

Position data

FEN: 1KQ5/1p6/p1q5/P5p1/5k2/2P5/1P6/8 w - - 8 67

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