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

Position

White: king g1; queen d8; bishops f4/g2; knight g4; pawns c2/d3/e5/f2/g3/h6. Black: king g8; queen b5; bishops a6/f8; knight d7; pawns a3/d4/d5/e6/f7/g7/h7. Black is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: g6 — pawn g7→g6. Now White to move.
2. Best move: Bg5 — bishop f4→g5. Opponent replies Qb1+ (queen b5→b1, gives check).
3. Best move: Kh2 — king g1→h2. Opponent replies Qb7 (queen b1→b7).
4. Best move: Be7 — bishop g5→e7. Opponent replies Qc8 (queen b7→c8).
5. Best move: Qxd7 — queen d8→d7, captures knight.

Tactical themes

advantage, defensive move, middlegame, quiet move, very long. The key move is Bg5.

Position data

FEN: 3Q1bk1/3n1ppp/b3p2P/1q1pP3/3p1BN1/p2P2P1/2P2PB1/6K1 b - - 0 26

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