Chess Puzzle #MVBLG — Intermediate, Black to move, middlegame

Position

White: king e2; rook a7; knight e5; pawns c3/d4/f4/g5. Black: king e8; rook h1; pawns a2/c4/d5/e6/f5. White is ahead by 2 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: g6 — pawn g5→g6. Now Black to move.
2. Best move: a1=Q — pawn a2→a1, promotes to queen. Opponent replies Rxa1 (rook a7→a1, captures queen).
3. Best move: Rxa1 — rook h1→a1, captures rook. Opponent replies g7 (pawn g6→g7).
4. Best move: Rg1 — rook a1→g1.

Tactical themes

advanced pawn, crushing, endgame, long, promotion. The key move is a1=Q.

Position data

FEN: 4k3/R7/4p3/3pNpP1/2pP1P2/2P5/p3K3/7r w - - 5 42

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