Chess Puzzle #LByDN — Advanced, White to move, middlegame

Position

White: king c1; queen d7; rook h2; knight h5; pawns a2/b2/d3/d4/e3/f2. Black: king h8; queen f3; rooks a8/f8; pawns a7/b7/c6/d5/f5/f6/h7. Black is ahead by 3 points of material. White to move.

Solution (4 moves)

1. Opponent setup: Rg8 — rook f8→g8. Now White to move.
2. Best move: Nxf6 — knight h5→f6, captures pawn. Opponent replies Rg1+ (rook g8→g1, gives check).
3. Best move: Kd2 — king c1→d2. Opponent replies Qd1+ (queen f3→d1, gives check).
4. Best move: Kc3 — king d2→c3. Opponent replies Qc1+ (queen d1→c1, gives check).
5. Best move: Kb3 — king c3→b3.

Tactical themes

crushing, endgame, very long. The key move Nxf6 wins material.

Position data

FEN: r4r1k/pp1Q3p/2p2p2/3p1p1N/3P4/3PPq2/PP3P1R/2K5 b - - 0 26

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