Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_London_System
Moves: 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. c3 Qb6 5. Qb3 c4 6. Qc2 Nc6 7. Nbd2 g6 8. e4
dxe4 9. Nxe4 Nxe4 10. Qxe4 Qxb2 11. Rb1 Qxc3+ 12. Bd2 Qa3 13. Bxc4 Bf5 14. Qd5
e6 15. Qb5 Bxb1 *
Position (FEN): r3kb1r/pp3p1p/2n1p1p1/1Q6/2BP4/q4N2/P2B1PPP/1b2K2R w Kkq - 0 16
White to move.
Themes:  Middlegame  
Puzzle rating: 1915
Best move: Qxb7