Chess Puzzle #z891w — Master, Black to move, endgame

Position

White: king a2; rook e1; pawns b4/d6/e4. Black: king f7; pawns e5/f2/g4/h5. White is ahead by 4 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Rf1 — rook e1→f1. Now Black to move.
2. Best move: g3 — pawn g4→g3. Opponent replies b5 (pawn b4→b5).
3. Best move: Ke8 — king f7→e8. Opponent replies b6 (pawn b5→b6).
4. Best move: g2 — pawn g3→g2. Opponent replies Rxf2 (rook f1→f2, captures pawn).
5. Best move: g1=Q — pawn g2→g1, promotes to queen.

Tactical themes

advanced pawn, crushing, endgame, promotion, rook endgame, very long. The key move is g3.

Position data

FEN: 8/5k2/3P4/4p2p/1P2P1p1/8/K4p2/4R3 w - - 0 55

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