Fantastic execution! It was quite difficult, so being able to first try a bit with 2 colors before moving on to three colours was very welcome! I didnt dare any more though. My best score was 650 with 3 colors.
I was thinking if there is some way to make it a bit less overwhelming, because you have to analyse a LOT if information to figure out where you even should try place something. On the other hand maybe that is what makes this game so great, I personally havent played a lot of tetris but for pros maybe this is exactly what they look for.
I also am very impressed with the polish on this!