Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Taimanov_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Bb5 Bc5 6. Be3 Nxd4 7. Bxd4 Bxd4
8. Qxd4 Nf6 9. Nc3 O-O 10. O-O-O a6 11. Ba4 b5 12. Bb3 Bb7 13. f3 Qa5 14. Kb1
b4 15. Na4 Rac8 16. c3 Bc6 17. Nc5 bxc3 18. Qxc3 Qb6 19. Rc1 Nxe4 *
Position (FEN): 2r2rk1/3p1ppp/pqb1p3/2N5/4n3/1BQ2P2/PP4PP/1KR4R w - - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1981
Best move: fxe4