The Bumping Squares sliding
block puzzle consists of eight square tiles. Each tile can be
colored into blue or orange color. When a tile bumps another tile it
changes its color to the color of the tile it bumps into. I.e. if an
orange tile bumps the blue one, the orange tile changes its color
into blue. If an orange tile bumps another orange tile it does not
change its color.
The object of each challenge is to reach the goal position.
There are 12 different challenges, which can be chosen from the