This puzzle was developed by Inaba Naoki.
Puzzle and Goal
An unsolved buzzle consists of a rectangular grid divided into irregular regions. Some cells have number clues in them.
The goal is to put a number in each cell.
The solved grid must satisfy the following conditions:
Each region contains the numbers from 1 to n, where n is the number of cells in the region.
No two adjacent cells (including diagonally) can contain the same number.
Nanbaburokku; Number Blocks; Zahlenblöcke