Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Other_variations
Moves: 1. e4 e5 2. Nc3 d5 3. exd5 Nf6 4. d3 Nxd5 5. Nxd5 Qxd5 6. Qf3 Qe6 7. Ne2 Bd6 8.
Nc3 O-O 9. Be2 Nc6 10. Be3 Nb4 11. Bd1 Nc6 12. O-O f5 13. Qd5 f4 14. Bd2 Kh8
15. h3 Qg6 16. Kh1 Nd4 17. Qe4 Bf5 18. Qxb7 f3 19. Bxf3 Nxf3 *
Position (FEN): r4r1k/pQp3pp/3b2q1/4pb2/8/2NP1n1P/PPPB1PP1/R4R1K w - - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1632
Best move: Qxf3