Chess Puzzle #OM6mL — Master, Black to move, middlegame

Position

White: king g1; queen a8; rook a4; pawns a3/f2/g2/h3. Black: king h7; queen g5; rook c5; pawns a5/f5/f7/g7/h6. Black is ahead by 1 point of material. Black to move.

Solution (5 moves)

1. Opponent setup: Rxa5 — rook a4→a5, captures pawn. Now Black to move.
2. Best move: Qc1+ — queen g5→c1, gives check. Opponent replies Kh2 (king g1→h2).
3. Best move: Qf4+ — queen c1→f4, gives check. Opponent replies g3 (pawn g2→g3).
4. Best move: Qxf2+ — queen f4→f2, captures pawn, gives check. Opponent replies Qg2 (queen a8→g2).
5. Best move: Qxg2+ — queen f2→g2, captures queen, gives check. Opponent replies Kxg2 (king h2→g2, captures queen).
6. Best move: Rxa5 — rook c5→a5, captures rook.

Tactical themes

crushing, endgame, very long. The key move Qxf2+ captures with check, forcing a response.

Position data

FEN: Q7/5ppk/7p/p1r2pq1/R7/P6P/5PP1/6K1 w - - 2 30

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