Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Be7 5. d3 a5 6. Ng5 O-O 7. Qf3 Nd4 8. Qd1
d6 9. Nd5 b5 10. Nxf6+ Bxf6 11. Bd5 c6 12. Nxf7 Rxf7 13. Bxf7+ Kxf7 14. c3 Ne6
15. Qh5+ Kg8 16. g4 Bg5 17. Bxg5 Qxg5 18. Qxg5 *
Position (FEN): r1b3k1/6pp/2ppn3/pp2p1Q1/4P1P1/2PP4/PP3P1P/R3K2R b KQ - 0 18
Black to move.
Themes:  Endgame  
Puzzle rating: 667
Best move: Nxg5