In this game the H-key of your keyboard is your biggest friend. It gives you a hint for a possible match.
So for this achievement simply abuse the H-key, followed by left clicking your mouse to choose the proposed match.
If by any chance you run out of matches make sure you choose continue. Otherwise you'll get a new puzzle and you'd have to start all over again. After choosing continue, reshuffle and get back to clicking the H-key and the left mouse click.
All of this should take around a minute. Congrats on an easy 35GS