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
Improved solution by Tristan)
Not allowed. Line segments may cross each other only at intersections. KB is not allowed to overlap DA, as this requires that you trace over line segment BD twice.
nice try.
re: Improved solution...is bogus
