Chess Puzzle #OimiZ — Master, Black to move, middlegame

Position

White: king g2; queen e2; rooks c1/f1; bishops d3/d4; knight f3; pawns a3/c4/f2. Black: king g8; queen h6; rook f8; bishops b7/g3; knight g4; pawns a7/b6/e6/f7/g7/h7. White is ahead by 2 points of material. Black to move.

Solution (6 moves)

1. Opponent setup: Kxg3 — king g2→g3, captures bishop. Now Black to move.
2. Best move: Bxf3 — bishop b7→f3, captures knight. Opponent replies Bxg7 (bishop d4→g7, captures pawn).
3. Best move: Kxg7 — king g8→g7, captures bishop. Opponent replies Qb2+ (queen e2→b2, gives check).
4. Best move: f6 — pawn f7→f6. Opponent replies Kxf3 (king g3→f3, captures bishop).
5. Best move: Ne5+ — knight g4→e5, gives check. Opponent replies Ke2 (king f3→e2).
6. Best move: Qh5+ — queen h6→h5, gives check. Opponent replies Kd2 (king e2→d2).
7. Best move: Rd8 — rook f8→d8.

Tactical themes

advantage, exposed king, fork, middlegame, very long. The key move Bxf3 wins material.

Position data

FEN: 5rk1/pb3ppp/1p2p2q/8/2PB2n1/P2B1Nb1/4QPK1/2R2R2 w - - 0 21

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