Chess puzzle (Advantage)
Moves: 1. e4 c5 2. d3 Nc6 3. Nc3 Nf6 4. Bd2 e5 5. Nf3 Bd6 6. Be2 Bc7 7. O-O O-O 8. a3
d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Ne1 Qd8 12. Rb1 Nd4 13. Bc3 b6 14. Bf3 Rb8
15. Be2 Bb7 16. Nf3 f5 17. Nxd4 exd4 18. Bd2 Qh4 19. f4 Rfe8 20. Bf3 Bxf4 *
Position (FEN): 1r2r1k1/pb4pp/1p6/2p2p2/3p1b1q/P2P1B2/1PPB2PP/1R1Q1RK1 w - - 0 21
White to move.
Themes:  Middlegame  
Puzzle rating: 1753
Best move: Bxf4