Fillomino

Fillomino is a type of region division logic puzzle, where the object is to divide the grid up into regions (in a square grid, polyominos). Regions of the same size may not touch. Some cells have numbers; these must denote the size of the region that the cell is in. Some regions may have multiple, or no clues. Fillomino can alternatively be seen as a number placement genre, where the objective is to fill in positive numbers in the grid such that every number N is in a group of exactly size N.

Background

Hitori was first introduced in Puzzle Communication Nikoli #47 in 1994, invented by すらんた ("Suranta"). The original name for the genre was フィルオミノ ("Firumino") which is a portmanteau of the English loanwords for "fill" and "-omino". The genre was inspired by the earlier genre フィルマット ("Firumatto"), which additionally requires all regions to be size 1xN rectangles.

Puzzle Application

An example Fillomino puzzle

The solution to the above puzzle

TO DO

Strategy

TO DO

Examples

TO DO

See Also

• List of Fillomino puzzles