Chess Puzzle #48zZ3 — Intermediate, Black to move, endgame

Position

White: king b5; rook c6; pawns a2/b3. Black: king d5; rook g7; pawn g5. White is ahead by 1 point of material. Black to move.

Solution (6 moves)

1. Opponent setup: a4 — pawn a2→a4. Now Black to move.
2. Best move: Rb7+ — rook g7→b7, gives check. Opponent replies Rb6 (rook c6→b6).
3. Best move: Rxb6+ — rook b7→b6, captures rook, gives check. Opponent replies Kxb6 (king b5→b6, captures rook).
4. Best move: g4 — pawn g5→g4. Opponent replies a5 (pawn a4→a5).
5. Best move: g3 — pawn g4→g3. Opponent replies a6 (pawn a5→a6).
6. Best move: g2 — pawn g3→g2. Opponent replies a7 (pawn a6→a7).
7. Best move: g1=Q+ — pawn g2→g1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, promotion, quiet move, rook endgame, very long. The key move Rxb6+ captures with check, forcing a response.

Position data

FEN: 8/6r1/2R5/1K1k2p1/8/1P6/P7/8 w - - 6 61

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