Chess Puzzle #Y2nCL — Advanced, Black to move, middlegame

Position

White: king a3; queen f6; rooks a7/f7; pawns a2/c4/f4. Black: king g8; queen d3; rook f8; pawns a5/g6/h4. White is ahead by 5 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Ka4 — king a3→a4. Now Black to move.
2. Best move: Qxc4+ — queen d3→c4, captures pawn, gives check. Opponent replies Kxa5 (king a4→a5, captures pawn).
3. Best move: Qc5+ — queen c4→c5, gives check. Opponent replies Ka4 (king a5→a4).
4. Best move: Qxa7+ — queen c5→a7, captures rook, gives check. Opponent replies Rxa7 (rook f7→a7, captures queen).
5. Best move: Rxf6 — rook f8→f6, captures queen.

Tactical themes

advantage, endgame, very long. The key move Qxc4+ captures with check, forcing a response.

Position data

FEN: 5rk1/R4R2/5Qp1/p7/2P2P1p/K2q4/P7/8 w - - 5 42

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