Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Nc6 5. Nc3 Nf6 6. d3 Bg7 7. O-O Bg4 8. h3
Be6 9. Be3 h6 10. d4 cxd4 11. Nxd4 Nxd4 12. Bxd4 Qd7 13. g4 h5 *
Position (FEN): r3k2r/pp1qppb1/3pbnp1/7p/3BP1P1/2N4P/PPP2PB1/R2Q1RK1 w kq - 0 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1635
Best move: g5