### Fobidoshi

**Fobidoshi** (*"Forbidden Four"*) is a logic puzzle, invented by Naoki Inaba (Japan). It is played on a rectangular or square grid. Some of the cells have circles in them. The aim is to place circles into empty cells; all the circles must form an orthogonally continuous area. A line of connected circles must not contain more than 3 circles.

**Cross+A** can solve puzzles from **4 x 4** to **30 x 30**.