Chess Puzzle #30N9K — Intermediate, Black to move, middlegame

Position

White: king g1; queen h2; rooks a1/e1; knight d2; pawns a2/b2/c2/d3/f2/g2. Black: king c8; queen d5; rook g6; knight f4; pawns a7/c6/e6/f7/g7/h5. White is ahead by 5 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: f3 — pawn f2→f3. Now Black to move.
2. Best move: Rxg2+ — rook g6→g2, captures pawn, gives check. Opponent replies Qxg2 (queen h2→g2, captures rook).
3. Best move: Nxg2 — knight f4→g2, captures queen. Opponent replies Kxg2 (king g1→g2, captures knight).
4. Best move: Qg5+ — queen d5→g5, gives check. Opponent replies Kf2 (king g2→f2).
5. Best move: Qxd2+ — queen g5→d2, captures knight, gives check.

Tactical themes

advantage, attraction, fork, middlegame, very long. The key move Rxg2+ captures with check, forcing a response.

Position data

FEN: 2k5/p4pp1/2p1p1r1/3q3p/5n2/3P4/PPPN1PPQ/R3R1K1 w - - 3 21

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