Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. d3 a6 5. Bg2 Nc6 6. O-O e5 7. Nbd2 Bg4 8. h3
Bh5 9. g4 Bg6 10. Nh2 Nd4 11. c3 Nc6 12. Nc4 Be7 13. f4 exf4 14. Bxf4 O-O 15.
Re1 b5 16. e5 bxc4 *
Position (FEN): r2q1rk1/4bppp/p1np1nb1/2p1P3/2p2BP1/2PP3P/PP4BN/R2QR1K1 w - - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1660
Best move: exf6