Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. O-O Be7 5. Nc3 Nf6 6. d4 cxd4 7. Nxd4 Nc6 8.
Nxc6 bxc6 9. Bg5 h6 10. Bh4 O-O 11. f4 Qb6+ 12. Kh1 Qxb2 13. Qd2 d5 14. Rfb1
Qa3 15. Rb3 Qd6 16. e5 Qc7 *
Position (FEN): r1b2rk1/p1q1bpp1/2p1pn1p/3pP3/2B2P1B/1RN5/P1PQ2PP/R6K w - - 1 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1243
Best move: exf6