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

Position

White: king c2; queen b4; knight e5; pawns c6/d4/e3/f2/g3/h2. Black: king g8; rook a1; bishop f1; knights b6/e4; pawns c7/d5/e6/f7/g5/h6. Black is ahead by 2 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Na4 — knight b6→a4. Now White to move.
2. Best move: Qb8+ — queen b4→b8, gives check. Opponent replies Kg7 (king g8→g7).
3. Best move: Qxc7 — queen b8→c7, captures pawn. Opponent replies Ra2+ (rook a1→a2, gives check).
4. Best move: Kb3 — king c2→b3.

Tactical themes

advantage, endgame, long. The key move is Qb8+.

Position data

FEN: 6k1/2p2p2/1nP1p2p/3pN1p1/1Q1Pn3/4P1P1/2K2P1P/r4b2 b - - 9 26

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