goal is simple: Try to get all blocks into a "down" position.
do this by pushing a block down, or pulling a block up by clicking it.
This will also alter the state of each ajoining block. If a block was up,
it will move down. If the block was down, it will move up.
score is the number of moves you made. Try to get all blocks in the down
position, in as few moves as possible. Good luck!