Enneaglyphs: sudoku variation puzzle app for iphone, ipad

Enneaglyphs is a version of sudoku. As the line zigzags, the numbers 1 - 9 follow in the correct sequence. However, you can't tell which is the head & which is the tail.  Of course the middle # must be 5.

I've gotten tired of sudoku - even the variations. But maybe you have not.

Enneaglyphs is a free puzzle app. Try it.