Chess puzzle (Advantage)
Opening: Latvian_Gambit, Latvian_Gambit_Mason_Countergambit
Moves: 1. e4 e5 2. Nf3 f5 3. d4 fxe4 4. Nxe5 Nf6 5. Bc4 d5 6. Bb3 Bd6 7. O-O O-O 8.
Bg5 c6 9. Nc3 Be6 10. Ne2 Nbd7 11. Nf4 Qe8 12. Nxe6 Qxe6 13. Nxd7 Nxd7 14. Be3
Qg6 15. c4 Nf6 16. cxd5 cxd5 17. Rc1 *
Position (FEN): r4rk1/pp4pp/3b1nq1/3p4/3Pp3/1B2B3/PP3PPP/2RQ1RK1 b - - 1 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1979
Best move: Ng4