Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Larsen_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. Nc3 Bg7 6. Bc4 a6 7. O-O Nd7 8. Qf3
Ne5 9. Qe2 b5 10. Bb3 c5 11. Bxf7+ Kxf7 12. f4 Ng4 13. f5 gxf5 *
Position (FEN): r1bq2nr/5kbp/p2p4/1pp2p2/3NP1n1/2N5/PPP1Q1PP/R1B2RK1 w - - 0 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1956
Best move: Nxf5