Chess Puzzle #bIUmk — Advanced, White to move, middlegame

Position

White: king g1; rooks a1/d1; bishop f3; knight a4; pawns b3/f2/g2/h3. Black: king g7; queen h4; rooks b8/f8; pawns b4/d6/f7/g5/h6. Black is ahead by 4 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Rfd8 — rook f8→d8. Now White to move.
2. Best move: Bg4 — bishop f3→g4. Opponent replies h5 (pawn h6→h5).
3. Best move: g3 — pawn g2→g3. Opponent replies hxg4 (pawn h5→g4, captures bishop).
4. Best move: gxh4 — pawn g3→h4, captures queen.

Tactical themes

advantage, long, middlegame, quiet move, trapped piece. The key move is Bg4.

Position data

FEN: 1r3r2/5pk1/3p3p/6p1/Np5q/1P3B1P/5PP1/R2R2K1 b - - 1 26

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