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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.brain teasers for kids ages 10-12 - brain teasers for kids - brain teaser games - brain teaser puzzles for kids - brain teaser books for kids - brain teaser for kids - brain teaser for teens - brain teaser for kids ages 8-10 - brain teaser games for kids - brain teaser games for kids ages 10-12 - brain teaser gifts - brain teaser travel games for kids