Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 g5 3. Bxg5 f6 4. Bf4 Nc6 5. e3 e5 6. dxe5 fxe5 7. Qh5+ Kd7 8.
Bxe5 Nxe5 9. Qxe5 Nf6 10. Nc3 Bd6 11. Qf5+ Kc6 12. Bb5+ Kb6 13. Nxd5+ *
Position (FEN): r1bq3r/ppp4p/1k1b1n2/1B1N1Q2/8/4P3/PPP2PPP/R3K1NR b KQ - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1770
Best move: Nxd5