Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 Nf6 2. Bf4 d5 3. Nf3 Nc6 4. h3 g6 5. Nc3 Be6 6. Qd2 a6 7. Bh6 Qd7 8. Bxf8
Rxf8 9. O-O-O O-O-O 10. e3 Kb8 11. Na4 Ne4 12. Qe2 Nb4 13. Nc5 Qc6 14. Kb1 b6
15. Nxe4 *
Position (FEN): 1k1r1r2/2p1pp1p/ppq1b1p1/3p4/1n1PN3/4PN1P/PPP1QPP1/1K1R1B1R b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1566
Best move: dxe4