What is the minimum number of strokes to reproduce the drawing below without lifting up the pencil from the paper (no tricks at all), and without passing over a line segment (or part of it) already drawn? You may begin and end wherever you like, and line segments may cross each other, but only as intersections.

Note: a new stroke occurs when a line type ceased because you have to stop and change direction.

(In reply to re: No Subject by pcbouhid)

I can't see it?

The figure is composed of 13 strokes, 12 straight lines and a circle. My solution divides one of those lines into 3, giving 2 more strokes, no?

Posted by Percy on 2005-11-25 09:36:21