Chess Puzzle #2elE1 — Intermediate, Black to move, endgame

Position

White: king f5; rook a6; pawns a5/g5. Black: king c5; rook a4; pawn b3. White is ahead by 1 point of material. Black to move.

Solution (4 moves)

1. Opponent setup: g6 — pawn g5→g6. Now Black to move.
2. Best move: b2 — pawn b3→b2. Opponent replies Rb6 (rook a6→b6).
3. Best move: Rb4 — rook a4→b4. Opponent replies Rxb4 (rook b6→b4, captures rook).
4. Best move: Kxb4 — king c5→b4, captures rook. Opponent replies g7 (pawn g6→g7).
5. Best move: b1=Q+ — pawn b2→b1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, promotion, rook endgame, very long. The key move is b2.

Position data

FEN: 8/8/R7/P1k2KP1/r7/1p6/8/8 w - - 0 58

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