Chess Puzzle #0tlxX — Advanced, White to move, middlegame

Position

White: king e2; queen b3; bishop e1; knight f2; pawns a7/c4/d5/e4/f3. Black: king h7; queen g2; rook g3; knight g5; pawns c5/d6/e5/f4. Black is ahead by 1 point of material. White to move.

Solution (5 moves)

1. Opponent setup: Rxf3 — rook g3→f3, captures pawn. Now White to move.
2. Best move: Qb7+ — queen b3→b7, gives check. Opponent replies Kh6 (king h7→h6).
3. Best move: a8=Q — pawn a7→a8, promotes to queen. Opponent replies Re3+ (rook f3→e3, gives check).
4. Best move: Kd1 — king e2→d1. Opponent replies Qf3+ (queen g2→f3, gives check).
5. Best move: Kc2 — king d1→c2. Opponent replies Re2+ (rook e3→e2, gives check).
6. Best move: Bd2 — bishop e1→d2.

Tactical themes

advanced pawn, advantage, endgame, promotion, very long. The key move is Qb7+.

Position data

FEN: 8/P6k/3p4/2pPp1n1/2P1Pp2/1Q3Pr1/4KNq1/4B3 b - - 0 46

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