Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 c5 5. c3 Nc6 6. Bd3 cxd4 7. exd4 Bd6 8. Bg3
Bxg3 9. hxg3 Qb6 10. Qc2 Bd7 11. Nbd2 h6 12. O-O Rc8 13. Rfe1 Nxd4 *
Position (FEN): 2r1k2r/pp1b1pp1/1q2pn1p/3p4/3n4/2PB1NP1/PPQN1PP1/R3R1K1 w k - 0 14
White to move.
Themes:  Middlegame  
Puzzle rating: 1143
Best move: Nxd4