Hommage to Albrecht Durer

Can you make a square so that not only the rows,columns and diagonals add to 34,but also the 4 corner numbers,the 4 central numbersand each of the 2×2 corner squares add to 34? who was Albrecht Dürer A Magic square is a grid where the sum of the numbers in each line, each column and … Read more

Escape from Alcatraz

Help a prisoner escape, modify the position of the 5 pieces. By trying you will recreate a square with the same dimensions. But surprise a hole will appear, so that the prisoner finds the way out. Modifica la posizione dei 5 pezzi, provando potrai ricreare un quadrato delle dimensioni uguali, ma sorpresa scoprirai un buco … Read more


This is a tile formed by 14 pieces. It was situated a hundred years ago in the gardens of the library of Cordoba. An abstract geometric decoration. Its origins date back to 1100 , when Cordoba was a center of civilazation , culture and tolerance, in which arabs, jews and christians lived in great harmony. … Read more

The Emperor’s Turtle

According to Chinese legend ,the first magic square appeared to the emperor Yu while he was walking beside the Yellow River more than 4000 years ago , on the shell of a turtle. In the square the sum of the numbers from 1 to 9 , in each row, column and diagonal add up to … Read more