Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 h6 4. Nc3 Nf6 5. h3 a6 6. d3 Be7 7. a3 O-O 8. O-O b5
9. Ba2 c5 10. Nd5 Nc6 11. Nxe7+ Qxe7 12. c3 Be6 13. Be3 Bxa2 14. Rxa2 Nh7 15.
Ra1 f5 16. exf5 Rxf5 17. Re1 Raf8 18. d4 e4 19. dxc5 *
Position (FEN): 5rk1/4q1pn/p1np3p/1pP2r2/4p3/P1P1BN1P/1P3PP1/R2QR1K1 b - - 0 19
Black to move.
Themes:  Middlegame  
Puzzle rating: 1552
Best move: exf3