Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Paulsen-Basman_Defense
Moves: 1. e4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. c4 Ne7 7. Nc3 Ng6 8. c5
Bc7 9. Bc4 O-O 10. Be3 Nc6 11. a3 Nce5 12. Be2 Nh4 13. f4 *
Position (FEN): r1bq1rk1/ppbp1ppp/4p3/2P1n3/4PP1n/PNN1B3/1P2B1PP/R2QK2R b KQ - 0 13
Black to move.
Themes:  Opening  
Puzzle rating: 996
Best move: Nxg2+