This is another simple idea by Naoki Inaba. I enjoyed his puzzles a lot, so I figured I'd give them a try too. They're harder to design than I thought. So I start off with an easier puzzle. I changed the layout a bit to coincide with other genres like Masyu. I think people will remember more easily what each symbol represents this way. For his puzzles a circle is a corner cell, a triangle is an edge cell and a cross is an end cell.
Rules for L-Labels