The best of the web, We are flying the week again, with a maandagpuzzel. This week is the puzzle around a magic square. Can you use the square fill so that there is all conditions are met?
Below you can see a magic square with an empty balloon on each corner. The large red square can be divided into four smaller squares. In the middle you see a blue square. In every white ball you have a number, enter from 1 to 9. You can be any number one time only . the
The four digits in each square must have a sum of 20 . That applies to squares : the five red squares and the blue square.
