Chess Puzzle #7LCkH — Advanced, White to move, endgame

Position

White: king a1; queen d7; rook g1; pawns a2/b3. Black: king g5; queen c5; rook c6; bishop g6; pawns e5/f6/h7. Black is ahead by 4 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kf4 — king g5→f4. Now White to move.
2. Best move: Qg4+ — queen d7→g4, gives check. Opponent replies Ke3 (king f4→e3).
3. Best move: Re1+ — rook g1→e1, gives check. Opponent replies Kd2 (king e3→d2).
4. Best move: Qe2+ — queen g4→e2, gives check. Opponent replies Kc3 (king d2→c3).
5. Best move: Rc1+ — rook e1→c1, gives check.

Tactical themes

crushing, endgame, very long. The key move is Qg4+.

Position data

FEN: 8/3Q3p/2r2pb1/2q1p1k1/8/1P6/P7/K5R1 b - - 9 55

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