Chess Puzzle #mOJxV — Advanced, Black to move, endgame

Position

White: king c5; rook c2; pawns b4/c6. Black: king g3; rook f8; pawns g6/h2. Material is balanced. Black to move.

Solution (6 moves)

1. Opponent setup: Rxh2 — rook c2→h2, captures pawn. Now Black to move.
2. Best move: Kxh2 — king g3→h2, captures rook. Opponent replies b5 (pawn b4→b5).
3. Best move: g5 — pawn g6→g5. Opponent replies c7 (pawn c6→c7).
4. Best move: g4 — pawn g5→g4. Opponent replies b6 (pawn b5→b6).
5. Best move: g3 — pawn g4→g3. Opponent replies b7 (pawn b6→b7).
6. Best move: g2 — pawn g3→g2. Opponent replies c8=Q (pawn c7→c8, promotes to queen).
7. Best move: g1=Q+ — pawn g2→g1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, hanging piece, promotion, quiet move, rook endgame, very long. The key move Kxh2 wins material.

Position data

FEN: 5r2/8/2P3p1/2K5/1P6/6k1/2R4p/8 w - - 0 42

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