glassner@cwruecmp.UUCP (Andrew Glassner) (11/29/83)
>> 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...)