Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Bd3 Qb6 6. b3 cxd4 7. exd4 Bg4 8. Nf3
e6 9. Nbd2 Be7 10. h3 Bh5 11. Qc2 Rc8 12. a3 Nxd4 *
Position (FEN): 2r1k2r/pp2bppp/1q2pn2/3p3b/3n1B2/PPPB1N1P/2QN1PP1/R3K2R w KQk - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1291
Best move: Nxd4