Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Classical_Variation
Moves: 1. e4 Nc6 2. Nf3 e5 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Qg6 7. Qf3 Ne5 8.
Qf4 d6 9. Nd2 a6 10. O-O-O Be6 11. Kb1 b5 12. Be2 Qxg2 13. Rhg1 Qh3 14. Rxg7
Ng6 15. Rg1 *
Position (FEN): r3k1nr/2p2pRp/p2pb1n1/1pb5/3NPQ2/2P1B2q/PP1NBP1P/1K4R1 b kq - 2 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1238
Best move: Nxf4