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Path: utzoo!linus!decvax!cwruecmp!glassner
From: glassner@cwruecmp.UUCP (Andrew Glassner)
Newsgroups: net.puzzle
Subject: Easy answer to "looks simple" puzzle
Message-ID: <832@cwruecmp.UUCP>
Date: Tue, 29-Nov-83 14:39:04 EST
Article-I.D.: cwruecmp.832
Posted: Tue Nov 29 14:39:04 1983
Date-Received: Wed, 30-Nov-83 04:04:04 EST
Organization: CWRU Computer Engr. Cleveland, Ohio
Lines: 46


>> The puzzle is to draw a line (please not on your terminal screen)
>> WITHOUT LIFTING THE WRITING INSTRUMENT starting from any point not
>> on an intersection of lines in such a way that every line segment
>> is ONCE AND ONLY ONCE touched by your line. Every segment must be
>> touched once. Look at the middle horizontal line: it has three
>> segments, each of which must be touched once. You may pass through
>> a line as long as yo do it only once.

>> Here is the catch: YOU MUST NOT DRAW OVER YOUR OWN LINE.

No problem.
             START         -------------------
            /             /                   \      
        ---o-------------o---------------------o---
        ! /           ! /            !          \ !
        !/            !/             !           \!
        o             o   +----------o---+        o 
       /!            /!   |          !   |        !\ 
      / !           / !   |          !   |        ! \ 
     |  -----------o------o--------------o---------  |
      \ !         /       |  !           |        ! / 
       \!         |          !           |        !/ 
        o         +----------o-----------+        o
        !\                   !                   /!
        ! \                  !                  / !
        ---o-----------------------------------o---
            \                                 /               
             --------------------------------/                                                 
Please note that the instructions merely require 
  1.  Start on a point that is not an intersection of lines
  2.  Every line is touched only once

I would've rotated this but I don't think there would have been
much point!

Sorry to solve an insoluble problem ... I hope no one loses their
research grant!  :-)

  -Andrew
...
                                                              

 - Andrew               uucp:    decvax!cwruecmp!glassner
  (just a glint in a    csnet:   glassner.case@rand-relay
   phosphor's eye...)