A short introduction

Solution to: Sneaking Spider

The shortest path between two points in a plane is a straight line. And since the spider moves via the sides of the room only, we can "unfold" the room to make it a plane, as follows:

Solution
  front  
left top
  back
bottom right

The shortest path between the spider and the fly is the straight line AC. Since AB has a length of 1.5+3+1.5 = 6 meters and BC has a length of 0.25+7.5+0.25 = 8 meters, AC has a length of 10 meters.

back to the puzzle


Copyright © 1996-2010. RJE-productions. All rights reserved. No part of this website may be published, in any form or by any means, without the prior permission of the authors.