Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 Nf6 7. O-O Be6 8.
Bg5 Be7 9. f4 h6 10. Bh4 O-O 11. f5 Bd7 12. Nc3 Nxe4 *
Position (FEN): r2q1rk1/p1pbbpp1/2pp3p/5P2/4n2B/2NB4/PPP3PP/R2Q1RK1 w - - 0 13
White to move.
Themes:  Opening  
Puzzle rating: 1107
Best move: Bxe7