Chess Puzzle #91vEq — Expert, Black to move, middlegame

Position

White: king g1; queen a4; rooks a1/f1; bishop d5; knight f3; pawns c3/e4/f2/g2/h2. Black: king e8; queen f6; rooks b8/g8; bishop d7; pawns a7/d6/e5/f7/h6/h7. White is ahead by 2 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Qxa7 — queen a4→a7, captures pawn. Now Black to move.
2. Best move: Rxg2+ — rook g8→g2, captures pawn, gives check. Opponent replies Kxg2 (king g1→g2, captures rook).
3. Best move: Bh3+ — bishop d7→h3, gives check. Opponent replies Kg3 (king g2→g3).
4. Best move: Qf4+ — queen f6→f4, gives check. Opponent replies Kxh3 (king g3→h3, captures bishop).
5. Best move: Qxf3+ — queen f4→f3, captures knight, gives check.

Tactical themes

attraction, deflection, equality, kingside attack, middlegame, sacrifice, very long. The key move Rxg2+ captures with check, forcing a response.

Position data

FEN: 1r2k1r1/p2b1p1p/3p1q1p/3Bp3/Q3P3/2P2N2/5PPP/R4RK1 w - - 5 18

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