Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Italian_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. O-O O-O 6. h3 h6 7. d3 d6 8. Qe2
a6 9. Be3 Bb4 10. Rab1 Be6 11. Bxe6 fxe6 12. a3 Ba5 13. b4 Bb6 14. Bxb6 cxb6
15. Na4 b5 16. Nc3 Nh5 17. Nxe5 *
Position (FEN): r2q1rk1/1p4p1/p1npp2p/1p2N2n/1P2P3/P1NP3P/2P1QPP1/1R3RK1 b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1642
Best move: Nf4