Yagit first appear in Puzzle Communications Nikoli in June 2008, with the modified rule of turning paths in September 2008.
Puzzle and Goal
An unsolved puzzle consists of a rectangular grid. Some cells contain one of two animals, and some intersections contain dots.
The goal is to pen animals so that different animals aren't in the same pen.
The solved grid must satisfy the following conditions:
Draw lines starting from an edge, moving through the grid along the graph lines, and ending at another edge.
Lines can only turn at points (but don't need to).
Lines can cross except at points.
Each area formed by lines must contain at least one animal, and may not contain two different animals.