stringstheory is right. The blue blocks behave like billiard balls. You can tell where they will go after hitting the border. The problems start when they go faster and you are using a laptop touchpad.
"An intelligent hell would be better than a stupid paradise."
I made it to 23,6. The trick is to first go straight down, wait a moment, then upper left corner, then you can wait until the big square comes to kill you, then go down, wait a short while. But then the trouble begins. You need to first stay near the center but on the lower half. Then just avoid those blue devils. They will try to trick you to the upper left corner, don't go there, it's a trap!