but how
If you're asking how it's my fav, I honestly don't know. If you're asking how to score high, I would say mash drop until you're at the top 5 or so lines and then it's a lot easier to aim/force pieces into the corner to score lines more quickly. While you doing the initial mash, it's nice to make sure you have pieces stuck against the side so you don't have to drop stuff down into a void before you can score lines.