Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bb5+ c6 4. Bc4 d5 5. exd5 cxd5 6. Bb3 e4 7. Nd4 Bc5 8. c3
Nc6 9. Ne2 Qf6 10. O-O Be6 11. d4 Bd6 12. Ng3 Nge7 13. Na3 Ng6 14. Nb5 Bb8 15.
a4 O-O 16. f4 Nh4 17. Nh5 Qg6 18. Ng3 Nf3+ *
Position (FEN): rb3rk1/pp3ppp/2n1b1q1/1N1p4/P2PpP2/1BP2nN1/1P4PP/R1BQ1RK1 w - - 5 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1318
Best move: gxf3