Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Open
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Qb6 8.
Nb3 Qd8 9. O-O-O d6 10. h4 h5 11. f4 Bg4 12. Be2 Nf6 13. e5 Bxe2 *
Position (FEN): r2qk2r/1p2ppb1/p1np1np1/4P2p/5P1P/1NN1B3/PPPQb1P1/2KR3R w kq - 0 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1765
Best move: exf6