Chess Puzzle #IGCs1 — Advanced, Black to move, middlegame

Position

White: king b1; queen h5; rooks h1/h6; bishop d3; knights d2/e5; pawns d4/f2/g2/g3. Black: king g8; queen b4; rook e8; bishops d7/g7; knight c6; pawns a6/c3/d5/e6/f7/g5. White is ahead by 3 points of material. Black to move.

Solution (2 moves)

1. Opponent setup: Kc1 — king b1→c1. Now Black to move.
2. Best move: Qb2+ — queen b4→b2, gives check. Opponent replies Kd1 (king c1→d1).
3. Best move: Qxd2# — queen b2→d2, captures knight, delivers checkmate.

Tactical themes

master, mate, mate in 2, middlegame, queenside attack, short. The combination ends with Qxd2# delivering checkmate.

Position data

FEN: 4r1k1/3b1pb1/p1n1p2R/3pN1pQ/1q1P4/2pB2P1/3N1PP1/1K5R w - - 3 24

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