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(10): No Subject | spoiler | by Mindrod)

Mindy, donīt you think that BC is a line, not a stroke?

The note was added to lead no doubt about what is a stroke, at least in this puzzle.

Edited on November 25, 2005, 1:39 pm

Edited on November 25, 2005, 1:51 pm

Posted by pcbouhid on 2005-11-25 13:37:03