well, I have only gotten close to the forth boss once..enjoyed the trip to that boss but as far as beating them, I might be missing something, or the demo is limited. The game has depth. It's like playing chess, paying attention to the number in the corner of tile, it's the amount of plays before a tile changes, and figuring out the path to victory.
From the top the very Right tile sometime between third and forth boss entering that tile only happened once, but the tile numbers around that tile changed, and the tiles, all around that space changed, when the number was above 1.
