Chess Puzzle #aiqmz — Advanced, Black to move, middlegame

Position

White: king f1; queen f5; rooks d4/e1; pawns a3/b2/c3/h3. Black: king g8; queen g3; rook g6; pawns a6/b7/d5/f7/g7/h6. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Rg4 — rook d4→g4. Now Black to move.
2. Best move: Qxh3+ — queen g3→h3, captures pawn, gives check. Opponent replies Kf2 (king f1→f2).
3. Best move: Qxg4 — queen h3→g4, captures rook. Opponent replies Re8+ (rook e1→e8, gives check).
4. Best move: Kh7 — king g8→h7. Opponent replies Qxg4 (queen f5→g4, captures queen).
5. Best move: Rxg4 — rook g6→g4, captures queen.

Tactical themes

advantage, endgame, very long. The key move Qxh3+ captures with check, forcing a response.

Position data

FEN: 6k1/1p3pp1/p5rp/3p1Q2/3R4/P1P3qP/1P6/4RK2 w - - 3 35

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