Good idea, mediocre execution.
While it's a neat update of two common types of speed puzzle games, it's far from perfect. The issue is on the left side, the edges are most likely to fill up if youre doing well, but then only those edges will appear on the other side, meaning theres no way to turn them into matches. I think it might have been better just to have two seperate games where you have to keep both of them from reaching the top.