Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Colle_System
Moves: 1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. b3 cxd4 5. exd4 Nc6 6. Bd3 Bg4 7. Bb2 Ne4 8.
O-O e6 9. c4 f5 10. c5 Be7 11. b4 O-O 12. a3 Bxf3 13. Qxf3 Bf6 14. Qd1 Nxd4 15.
Bxe4 fxe4 *
Position (FEN): r2q1rk1/pp4pp/4pb2/2Pp4/1P1np3/P7/1B3PPP/RN1Q1RK1 w - - 0 16
White to move.
Themes:  Middlegame  
Puzzle rating: 841
Best move: Bxd4