Puzzles Based On Mathematics: Firumatto Puzzles - The Best Puzzles Collection

("Fillmat") is a logic puzzle published by Nikoli. A rectangular or square grid contains digits in some cells. It is necessary to divide the grid into rectangular regions. Every region must be exactly one cell wide; the other side of the region has length from 1 to 4 cells. A cell with a number indicates the size of a region. Two regions of the same size must not be orthogonally adjacent. A grid dot must not be shared by the corners of four regions. puzzle games for adults - puzzle game books - puzzle game books for adults - puzzle game adult - puzzle game brain teaser - puzzle game for adults - puzzle game gift - logic puzzles - logic puzzles for adults - logic puzzle books for adults - logic puzzle book - logic puzzle games - logic puzzle workbook - logic puzzle adult - logic puzzle for adults - logic puzzle grid - logic puzzle magazine for adults - brain teasers for adults - brain teaser puzzles - brain teaser puzzles for adults - brain teaser games - brain teaser adult - brain teaser books for adults - brain teaser books - brain teaser games for adults