Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Nc3 Be7 4. d4 exd4 5. Nxd4 Nf6 6. Bb5+ Bd7 7. Bxd7+ Nbxd7
8. Nf5 O-O 9. O-O Ne5 10. Nxe7+ Qxe7 11. Qd4 Nc6 12. Qd1 Rfe8 13. Bg5 h6 14.
Bxf6 Qxf6 15. Nd5 Qd8 16. Re1 Ne5 17. f4 Ng6 18. f5 Nf4 *
Position (FEN): r2qr1k1/ppp2pp1/3p3p/3N1P2/4Pn2/8/PPP3PP/R2QR1K1 w - - 1 19
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1108
Best move: Nxf4