Chess Puzzle #Ecszo — Expert, Black to move, middlegame

Position

White: king g1; queen f8; rooks a1/f1; knight c5; pawns a2/b3/c3/d4/f2/g2. Black: king g5; queen g4; rook g6; pawns d5/e6/h3. White is ahead by 11 points of material. Black to move.

Solution (5 moves)

1. Opponent setup: Qd8+ — queen f8→d8, gives check. Now Black to move.
2. Best move: Kf5 — king g5→f5. Opponent replies Qf8+ (queen d8→f8, gives check).
3. Best move: Rf6 — rook g6→f6. Opponent replies Qg8 (queen f8→g8).
4. Best move: Qxg8 — queen g4→g8, captures queen. Opponent replies g3 (pawn g2→g3).
5. Best move: Qg4 — queen g8→g4. Opponent replies Kh2 (king g1→h2).
6. Best move: Qf3 — queen g4→f3.

Tactical themes

crushing, defensive move, endgame, pin, very long. The key move is Kf5.

Position data

FEN: 5Q2/8/4p1r1/2Np2k1/3P2q1/1PP4p/P4PP1/R4RK1 w - - 3 34

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