Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bd7 6. Bc4 Nc6 7. Bg5 Be7 8.
O-O h6 9. Bh4 Ne5 10. Bb3 O-O 11. Nd5 *
Position (FEN): r2q1rk1/pppbbpp1/3p1n1p/3Nn3/3NP2B/1B6/PPP2PPP/R2Q1RK1 b - - 5 11
Black to move.
Themes:  Opening  
Puzzle rating: 1299
Best move: Nxd5