7. Rb8+ ... This move forces black to either lose their rook or allow white to queen. Either way Rb8+ should win this game.
8. Bxd6+ ... If the king takes back, black loses the rook. If Kd8, then white plays Qxb7. Regardless of black's play, white picks up a knight or a rook with this move.
9. Qb3+ ... This move dominates black as the check not only saves the white queen but also eliminates the black queen. Once black deals with the check, white then plays the crushing move Rxh3. This all occurs unless black blocks the check with the queen and then drops that queen.