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 Be7 6. Bd3 O-O 7. O-O c5 8.
Nf3 Bg4 9. Be2 a6 10. Bg5 b5 11. Qd3 Nc6 12. Nd5 Nxd5 13. Bxe7 *
Position (FEN): r2q1rk1/4Bppp/p1np4/1ppn4/4P1b1/3Q1N2/PPP1BPPP/R4RK1 b - - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1615
Best move: Ndxe7