Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Mason_Attack
Moves: 1. f4 d5 2. d4 Nc6 3. Nf3 Nf6 4. e3 Bg4 5. c4 dxc4 6. Bxc4 e6 7. O-O a6 8. a4
Na5 9. Ba2 c5 10. Nc3 cxd4 11. Qxd4 Qxd4 12. Nxd4 Bc5 13. h3 Bxd4 14. hxg4 Bxc3
15. bxc3 Ne4 16. Ba3 Nxc3 *
Position (FEN): r3k2r/1p3ppp/p3p3/n7/P4PP1/B1n1P3/B5P1/R4RK1 w kq - 0 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1490
Best move: Bb4