IQ Lift's Weekly IQ Puzzles

Each IQ puzzle exercises your fluid intelligence (Gf) and executive cognitive processes. They reveal important elements of the mechanisms underlying intelligence. Try the exercise and then read the explanation of the cognitive mechanisms involved.

January puzzle coming soon!

December 09 - Empty space in triangle puzzle

The four parts of the top triangle have been rearranged in the second shape. The four parts are exactly the same in both arrangements. Why is there an empty space?

Answer next year! No one is figuring this one out!

November 09 - Stroop test

As quick as you can, say out loud the colour of every word -
 but NOT the word you read!

to find out about this test, click here

October 09 - Tower of Hanoi Problem

Here is the classic 3 disk (easier) version of this IQ puzzle. The diagram shows the starting point where all the disks are on peg 1. In this problem you need to move one disk at a time (from one peg to another), without putting a larger disk on a smaller one, to get to the arrangement in the second diagram. Don't use paper and pen, and try to solve the problem with the minimum number of moves. How many moves do you need to make?

         Peg 1                    Peg 2                     Peg 3

 

For the answer to this IQ puzzle click here