Pure Loop
From PuzzleWiki
Pure Loop is a type of Constraint Satisfaction Loop puzzle.
Contents |
Description
A Pure Loop puzzle generally takes the form of a rectangular grid, of which some of the cells are black.
Rules
Draw a single loop made of horizontal and vertical lines. The loop goes through all of the white cells, and none of the black ones.
Example
 Puzzle |
 Solution |
Puzzle by Naoki Inaba.
Aesthetic Constraints
History
Pure Loop puzzles were invented by Naoki Inaba. (However, similar puzzles are known previous.)
