Chess Puzzle #0DIPb — Master, Black to move, endgame

Position

White: king c3; pawns a2/b2/c4/f4/g5. Black: king c6; pawns a6/b5/c5/f5/g6. Material is balanced. Black to move.

Solution (10 moves)

1. Opponent setup: b4 — pawn b2→b4. Now Black to move.
2. Best move: bxc4 — pawn b5→c4, captures pawn. Opponent replies Kxc4 (king c3→c4, captures pawn).
3. Best move: cxb4 — pawn c5→b4, captures pawn. Opponent replies Kxb4 (king c4→b4, captures pawn).
4. Best move: Kd5 — king c6→d5. Opponent replies Ka5 (king b4→a5).
5. Best move: Ke4 — king d5→e4. Opponent replies Kxa6 (king a5→a6, captures pawn).
6. Best move: Kxf4 — king e4→f4, captures pawn. Opponent replies a4 (pawn a2→a4).
7. Best move: Ke5 — king f4→e5. Opponent replies a5 (pawn a4→a5).
8. Best move: f4 — pawn f5→f4. Opponent replies Kb6 (king a6→b6).
9. Best move: f3 — pawn f4→f3. Opponent replies a6 (pawn a5→a6).
10. Best move: f2 — pawn f3→f2. Opponent replies a7 (pawn a6→a7).
11. Best move: f1=Q — pawn f2→f1, promotes to queen.

Tactical themes

advanced pawn, crushing, endgame, pawn endgame, promotion, quiet move, very long. The key move bxc4 wins material.

Position data

FEN: 8/8/p1k3p1/1pp2pP1/2P2P2/2K5/PP6/8 w - - 0 39

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