Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Bd3 Bg6 5. Nf3 Be7 6. Ne5 Nf6 7. Nxg6 hxg6 8.
Nc3 Nc6 9. Qe2 Qd7 10. O-O-O O-O-O 11. a3 a6 12. Bxa6 bxa6 13. Qxa6+ Kb8 14.
Nb5 Bd6 15. Nxd6 *
Position (FEN): 1k1r3r/2pq1pp1/Q1nNpnp1/3p4/3P1B2/P3P3/1PP2PPP/2KR3R b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1455
Best move: cxd6