Chess Puzzle #Twm2q — Master, Black to move, endgame

Position

White: king c4; pawns a2/b3/e3/g2. Black: king g3; pawns a3/c5/c7/e4. Material is balanced. Black to move.

Solution (8 moves)

1. Opponent setup: Kxc5 — king c4→c5, captures pawn. Now Black to move.
2. Best move: Kxg2 — king g3→g2, captures pawn. Opponent replies Kd5 (king c5→d5).
3. Best move: Kf3 — king g2→f3. Opponent replies Kd4 (king d5→d4).
4. Best move: c5+ — pawn c7→c5, gives check. Opponent replies Kxc5 (king d4→c5, captures pawn).
5. Best move: Kxe3 — king f3→e3, captures pawn. Opponent replies b4 (pawn b3→b4).
6. Best move: Kf3 — king e3→f3. Opponent replies b5 (pawn b4→b5).
7. Best move: e3 — pawn e4→e3. Opponent replies b6 (pawn b5→b6).
8. Best move: e2 — pawn e3→e2. Opponent replies b7 (pawn b6→b7).
9. Best move: e1=Q — pawn e2→e1, promotes to queen.

Tactical themes

advanced pawn, crushing, deflection, endgame, pawn endgame, promotion, very long. The key move Kxg2 wins material.

Position data

FEN: 8/2p5/8/2p5/2K1p3/pP2P1k1/P5P1/8 w - - 6 39

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