Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Kan_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. e5 b5 6. Nc3 Bb7 7. Bd3 Nc6 8. Nf3
Bc5 9. O-O Qc7 10. Re1 Nge7 11. Bg5 h6 12. Bh4 g5 13. Nxg5 *
Position (FEN): r3k2r/1bqpnp2/p1n1p2p/1pb1P1N1/7B/2NB4/PPP2PPP/R2QR1K1 b kq - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1311
Best move: hxg5