Chess Puzzle #UD4oB — Advanced, White to move, middlegame

Position

White: king g1; queen a3; rooks a1/f1; bishops c1/g2; pawns a2/b2/c4/c6/e4/f2/g3. Black: king b8; queen g7; rooks d8/h8; bishop e7; knight f6; pawns b6/c7/d6/e5/f7/h4. White is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: hxg3 — pawn h4→g3, captures pawn. Now White to move.
2. Best move: Qa6 — queen a3→a6. Opponent replies Rh1+ (rook h8→h1, gives check).
3. Best move: Bxh1 — bishop g2→h1, captures rook. Opponent replies gxf2+ (pawn g3→f2, captures pawn, gives check).
4. Best move: Kxf2 — king g1→f2, captures pawn. Opponent replies Nxe4+ (knight f6→e4, captures pawn, gives check).
5. Best move: Bxe4 — bishop h1→e4, captures knight.

Tactical themes

crushing, middlegame, very long. The key move is Qa6.

Position data

FEN: 1k1r3r/2p1bpq1/1pPp1n2/4p3/2P1P2p/Q5P1/PP3PB1/R1B2RK1 b - - 2 23

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