Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_McConnell_Defense
Moves: 1. e4 e5 2. Nf3 Qf6 3. Nc3 c6 4. d4 d6 5. dxe5 dxe5 6. Bc4 h6 7. O-O Be7 8. Be3
Nd7 9. a3 Qg6 10. Ne2 Qxe4 11. Bd3 Qg4 12. h3 Qe6 13. b3 e4 14. Bc4 Qg6 15. Nf4
Qf5 16. Nd4 Qh7 17. b4 Ne5 18. Ba2 Bg5 19. Bb1 Bxf4 *
Position (FEN): r1b1k1nr/pp3ppq/2p4p/4n3/1P1Npb2/P3B2P/2P2PP1/RB1Q1RK1 w kq - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 887
Best move: Bxf4