Chess puzzle (Crushing)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Tortoise_Opening
Moves: 1. e4 e5 2. Bd3 Bc5 3. c3 Nf6 4. h3 Nc6 5. Bc2 d5 6. Qe2 O-O 7. d3 Be6 8. Bg5
dxe4 9. dxe4 Ne7 10. Bxf6 gxf6 11. Nd2 a6 12. Ngf3 Qd7 13. g4 Rad8 14. Nh4 Ng6
15. Nf5 *
Position (FEN): 3r1rk1/1ppq1p1p/p3bpn1/2b1pN2/4P1P1/2P4P/PPBNQP2/R3K2R b KQ - 4 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1569
Best move: Nf4