Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 Nc6 7. Be3 Qa5 8. f3
e6 9. Bg5 Be7 10. Nxc6 Qxg5 11. Nxe7 Kxe7 12. Qd2 Qc5 13. Bb3 Rd8 14. O-O-O a5
15. Na4 Qc6 *
Position (FEN): r1br4/1p2kppp/2qppn2/p7/N3P3/1B3P2/PPPQ2PP/2KR3R w - - 2 16
White to move.
Themes:  Middlegame  
Puzzle rating: 1501
Best move: e5