Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Bc4 h6 4. c3 Nf6 5. d3 Nc6 6. Nbd2 Bg4 7. O-O d5 8. exd5
Nxd5 9. Ne4 f5 10. Ng3 g5 11. Re1 Bg7 12. d4 e4 13. Nd2 *
Position (FEN): r2qk2r/ppp3b1/2n4p/3n1pp1/2BPp1b1/2P3N1/PP1N1PPP/R1BQR1K1 b kq - 1 13
Black to move.
Themes:  Opening  
Puzzle rating: 860
Best move: Bxd1