Category Archives: Patterns


At the optician, I saw several spectacles for sale. The prices of the frames, still without the glasses, showed a very clear pattern.

Pattern code glasses

What is the price of the one labelled with the question marks?

Usually you can find a new braintease here usually on Friday. Solutions are generally provided one week later.

You can check your solution here

Pattern codes – circles

1) Circles**
pattern code circle

Which code belongs at the question mark?
If you wish, you can peek at a hint

I have long suspected that there is a strong connection between mathematics and puzzles. Proving such a relation according to the scientific standards is of course another matter. It was nice to read that a study by the University of Chicago found that puzzle play helps boost Learning Math-Related skills in children between ages 2 and 4.