**Suguru** (*"Number Blocks"*) is a logic puzzle invented by Naoki Inaba (Japan). The task consists of a rectangular or square grid divided into regions. Each region must be filled with each of the digits from 1 to the number of cells in the region. Cells with the same digits must not be orthogonally or diagonally adjacent.

**Cross+A** can solve puzzles from **3 x 3** to **30 x 30**.