Chess Puzzle #qnvcE — Expert, Black to move, endgame

Position

White: king f1; rook e8; pawn a7. Black: king d6; rook b2; pawns f3/g3. Black is ahead by 1 point of material. Black to move.

Solution (3 moves)

1. Opponent setup: a8=Q — pawn a7→a8, promotes to queen. Now Black to move.
2. Best move: g2+ — pawn g3→g2, gives check. Opponent replies Kg1 (king f1→g1).
3. Best move: Rb1+ — rook b2→b1, gives check. Opponent replies Kf2 (king g1→f2).
4. Best move: g1=Q+ — pawn g2→g1, promotes to queen, gives check.

Tactical themes

advanced pawn, crushing, endgame, exposed king, long, promotion, queen rook endgame. The key move is g2+.

Position data

FEN: 4R3/P7/3k4/8/8/5pp1/1r6/5K2 w - - 2 56

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