*arrows* *r* = restart
A bit of fun logic on your screen, that's Basic parity. The aim of the game is move a selected box through a 3x3 board so that there will remain the same value in every window of the board. The point of the game is, that a value of every window is being increased about one, when you will get pull on it with the selected box. Basic Parity offers 100 levels to complete. Have fun!