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

Position

White: king f2; queen e2; rook b2; knight e4; pawns b6/e3/f3/g4/h3. Black: king g8; queen d8; rook d3; knight c4; pawns f7/g7/h4. White is ahead by 2 points of material. Black to move.

Solution (6 moves)

1. Opponent setup: b7 — pawn b6→b7. Now Black to move.
2. Best move: Nxb2 — knight c4→b2, captures rook. Opponent replies Qxb2 (queen e2→b2, captures knight).
3. Best move: Qb8 — queen d8→b8. Opponent replies f4 (pawn f3→f4).
4. Best move: Rd7 — rook d3→d7. Opponent replies Nc5 (knight e4→c5).
5. Best move: Rc7 — rook d7→c7. Opponent replies Qa3 (queen b2→a3).
6. Best move: Rxb7 — rook c7→b7, captures pawn. Opponent replies Nxb7 (knight c5→b7, captures rook).
7. Best move: Qxb7 — queen b8→b7, captures knight.

Tactical themes

endgame, equality, very long. The key move Nxb2 wins material.

Position data

FEN: 3q2k1/5pp1/1P6/8/2n1N1Pp/3rPP1P/1R2QK2/8 w - - 1 39

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