I've been doing the strat that Henry mentioned where you guess a tile on the side then use the number to figure out all of the mines in a piece midair before placing it. It's surprisingly easy as long as you don't mess up lol. But, while I was doing this, I discovered a pretty annoying bug that would happen every time I would get a tetris. If you clear a line with a piece that has been hard dropped, you'll automatically hard drop the next piece. This means after I get a tetris, a piece will always be hard dropped in the middle of the board which is really annoying.