Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_French_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nxc6 bxc6 7. O-O d5 8.
e5 Nd7 9. f4 Qb6+ 10. Kh1 Ba6 11. Nc3 Bxd3 12. cxd3 c5 13. Qg4 g6 14. a4 a6 15.
Rb1 Qb3 16. Bd2 d4 17. Ne4 Qxd3 18. Rbe1 Rb8 *
Position (FEN): 1r2kb1r/3n1p1p/p3p1p1/2p1P3/P2pNPQ1/3q4/1P1B2PP/4RR1K w k - 2 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1524
Best move: f5