A magical square is simple. You draw a square and divide it surface in 9 equal smaller squares (in other words, you have a table of 3 lines and 3 columns).
Now, the rule is that you have to put the numbers 1 to 9 in each little square. And you can put of course each number only once (like in a sudoku a bit). Now the sum in line or column or in the 2 main diagonal of the table should be always equal to 15.
Check those links for more information (warning, spoiler inside)
en.wikipedia.org/wiki/Magic_squaremathworld.wolfram.com/MagicSquare.html
Jean-Christophe
Thank you for sharing your photograph. I have just used it to illustrate my article “Examining Psychological Communication From a Therapy Viewpoint” on Suite101.com, an online magazine. The photo credit is visible when readers hover over the image. The image can be enlarged by clicking on the thumbnail accompanying the article. When the credit is clicked on the enlargement it will take you to the original site where the photo is displayed.
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