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        riddles >> easy >> Difficult item
        
(Message started by: Karotto on Jun 29^th, 2008, 3:34am)

Title: Difficult item
Post by Karotto on Jun 29^th, 2008, 3:34am

Can you solve this? (Click the image for zoom)

http://img524.imageshack.us/img524/599/matrixc14ey4.th.gif (http://img524.imageshack.us/my.php?image=matrixc14ey4.gif)

Thanks

Title: Re: Difficult item
Post by Wardub on Jun 29^th, 2008, 5:58am

My guess is A.

Labeling the squares as follows
123
456
789

[hide]Reasoning:
It looks like the pairs across each other are the same, and the blue circles total 3.

If you look at(2,8) (4,6) (3,7) there the same image and blue dots = 3.

Now 1 has 2 dots on top then 1 on the bottom with 0 blue dots.
So number 9 should be the same image as 1 with 3 dots. A has 3 dots and 3 blue dots, but its upside down. So really the pairs aren't the same but they are flipped over a horizontal axis.
[/hide]

Or maybe I am out of my mind, and that only made sense to me.
???

Title: Re: Difficult item
Post by Immanuel_Bonfils on Jun 29^th, 2008, 11:53am

A, for a central symmetry.

I didn't notice the blue dots. Let us think about...

Seems that the number of blue dotas must be three for each symmetric pair.

I just don undestand why this problem is hard?

Title: Re: Difficult item
Post by Hippo on Jun 29^th, 2008, 12:35pm

But why on 7 there are 2 blue dots? And why the positioning of blue dots changes ... and yes, it does not belong to hard.

Title: Re: Difficult item
Post by towr on Jun 29^th, 2008, 2:29pm

on 06/29/08 at 11:53:03, Immanuel_Bonfils wrote:

I just don undestand why this problem is hard?

Because some people, when they first come here, think that the definition of hard is "I don't know the answer". And of course reading someone's mind, as puzzles of this kind sort of require, is hard.