Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 e6 3. Nc3 a6 4. e3 c5 5. Nf3 Nf6 6. dxc5 Bxc5 7. Bd3 Nc6 8. e4
Ng4 9. Be3 Nxe3 10. fxe3 Bxe3 11. exd5 exd5 12. Qe2 Qe7 *
Position (FEN): r1b1k2r/1p2qppp/p1n5/3p4/8/2NBbN2/PPP1Q1PP/R3K2R w KQkq - 2 13
White to move.
Themes:  Middlegame  
Puzzle rating: 987
Best move: Nxd5