Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 c6 4. c3 Nf6 5. d3 h6 6. O-O Qe7 7. Re1 Be6 8. Bb3
Nbd7 9. Be3 d5 10. exd5 cxd5 11. Ba4 Qd8 12. Nxe5 Be7 13. Bd4 O-O 14. Nd2 Nxe5
15. Bxe5 Qb6 16. b4 a5 17. Rb1 axb4 18. Rxb4 *
Position (FEN): r4rk1/1p2bpp1/1q2bn1p/3pB3/BR6/2PP4/P2N1PPP/3QR1K1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1091
Best move: Bxb4