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

Position

White: king c2; queen g5; rooks a1/g1; pawns b2/b5/c4/d5/e4/h6. Black: king c8; queen f7; rook f2; bishop b7; pawns a5/b6/c5/d6/g6/h7. White is ahead by 2 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kb3 — king c2→b3. Now Black to move.
2. Best move: Qf3+ — queen f7→f3, gives check. Opponent replies Ka2 (king b3→a2).
3. Best move: Qc3 — queen f3→c3. Opponent replies Qc1 (queen g5→c1).
4. Best move: Rc2 — rook f2→c2. Opponent replies Qxc2 (queen c1→c2, captures rook).
5. Best move: Qxc2 — queen c3→c2, captures queen.

Tactical themes

advantage, endgame, pin, very long. The key move is Qf3+.

Position data

FEN: 2k5/1b3q1p/1p1p2pP/pPpP2Q1/2P1P3/8/1PK2r2/R5R1 w - - 4 33

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