Subj:     PUZZLE - 9 Dots And 4 Lines (S448)

          From: William Wu of U. C. Berkeley 
          At: http://www.ocf.berkeley.edu/~wwu/riddles/intro.shtml

          Source:
         http://www.ocf.berkeley.edu/~wwu/riddles/easy.shtml#9dots 


 
 

. .
. .
  You have 9 dots arranged like a rectangle.
Without lifting your pen, or retracing a
line, connect all nine dots with four lines.
. .
     Solution
. .
. .
                            \\\//
                           -(o o)-
========================oOO==(_)==OOo=======================