Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Accelerated_Dragon
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6 bxc6 6. Nc3 Bg7 7. Bc4 e6 8.
Be3 d5 9. exd5 cxd5 10. Bb5+ Bd7 11. Bxd7+ Qxd7 12. Qd2 Rc8 13. O-O d4 14. Rad1
Nf6 15. Bxd4 Rd8 16. Ne2 e5 17. Qe3 Ng4 18. Qe4 *
Position (FEN): 3rk2r/p2q1pbp/6p1/4p3/3BQ1n1/8/PPP1NPPP/3R1RK1 b k - 3 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1739
Best move: f5