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 Bb4+ 5. c3 Bd6 6. Bg3 Bxg3 7. hxg3 Nc6 8.
Bd3 O-O 9. Nbd2 h6 10. Qe2 Re8 11. e4 dxe4 12. Nxe4 Ng4 13. O-O-O a6 14. Nfd2
f5 15. Nc5 e5 16. f3 *
Position (FEN): r1bqr1k1/1pp3p1/p1n4p/2N1pp2/3P2n1/2PB1PP1/PP1NQ1P1/2KR3R b - - 0 16
Black to move.
Themes:  Middlegame  
Puzzle rating: 1273
Best move: exd4