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. Be2 e5 7. Nb3 Be7 8. Be3
Be6 9. O-O O-O 10. f4 Nbd7 11. f5 Bxb3 12. axb3 b5 13. Bf3 Qc7 14. g4 Rfc8 *
Position (FEN): r1r3k1/2qnbppp/p2p1n2/1p2pP2/4P1P1/1PN1BB2/1PP4P/R2Q1RK1 w - - 1 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1643
Best move: g5