|Re: Off-Topic: Who can solve this?|
Message #5 Posted by Vieira, Luiz C. (Brazil) on 27 Feb 2010, 5:16 p.m.,
in response to message #1 by Matthias Wehrli
I felt dizzy twice: by looking at the drawing and by thinking of the the possibilities of starting over...
I particularly do not like games neither mind puzzles, but I like to understand their solutions. In some cases there is a rational line in finding one or another solution, in others is just a matter of being lucky enough choosing the starting direction.
I thought about starting with '5' (upper, leftmost digit in the top) because the set is symmetrical and '5' is right in the middle of it: 1,2,3,4,5,6,7,8,9 and the '>' and '<' alternate with each other in the first line. Then I thought: 'Too simple minded solution...' and tried to 'see' how would the numbers evolve in the picture. That´s when I felt the second dizziness and gave up.
Success and thanks for bringing it up! And if someone finds a rational way to solve it by reasoning, please, let me know the solution. Otherwise, if it is just a matter of starting with the right numbers, then the chances to make it wrong are way bigger than to make it right, and in this case, the solution cannot be explained, only shown.
That´s why I prefer trying to solve problems of the real world.
Edited: 27 Feb 2010, 5:17 p.m.