Chess Puzzle #WBhKB — Master, White to move, middlegame

Position

White: king h1; queen f7; rook f1; bishop d3; knight c3; pawns b2/c2/d5/g2/h3. Black: king g7; queen b4; rooks b8/c8; bishop d7; pawns a6/b5/e5/e7/g6/h7. Black is ahead by 3 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Kh6 — king g7→h6. Now White to move.
2. Best move: g4 — pawn g2→g4. Opponent replies Bxg4 (bishop d7→g4, captures pawn).
3. Best move: hxg4 — pawn h3→g4, captures bishop. Opponent replies Qxg4 (queen b4→g4, captures pawn).
4. Best move: Rf2 — rook f1→f2. Opponent replies Qh5+ (queen g4→h5, gives check).
5. Best move: Rh2 — rook f2→h2.

Tactical themes

crushing, middlegame, pin, quiet move, very long. The key move is g4.

Position data

FEN: 1rr5/3bpQkp/p5p1/1p1Pp3/1q6/2NB3P/1PP3P1/5R1K b - - 1 27

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