#layton-esque

[thecommunitycircus-blog-blog]

You know, this picture reminds me of a puzzle.

Do you know of one-line puzzles? The idea of one-line puzzles is to put your pen to paper and draw a shape without lifting your pen from the pad or retracing any lines. You can, however, cross lines.

From the four images above, one of them cannot be drawn with one line. Which one is it?