Just assume that there is no goal other than closing all the paths. A tile that connects to empty space means you're wrong. A tile that connects to another tile means you're right. Any and all other "rules" will be changed as necessary to ensure that, if a solution is pretty, it's also correct.
- You have to use all the tiles.
- The ball must visit every part of every tile.
- The finished layout must look elegant.
Just assume that there is no goal other than closing all the paths. A tile that connects to empty space means you're wrong. A tile that connects to another tile means you're right. Any and all other "rules" will be changed as necessary to ensure that, if a solution is pretty, it's also correct.