Albrecht Dürer (21 May 1471 – 6 April 1528) was not only a painter but also a graphic artist, engraver, mathematician and theorist. He came from Nuremberg and in his times he was considered a great Renaissance artist. His painting Melancholia I (the copper plate is currently hanging in the Guildhall Library in London) was created in 1514. It was called the “painting of paintings” and has been studied and analysed by a number of historians, mathematicians as well as astronomers. This is why there has been a lot of interpretations of the work. It is said to belong to the works that leave the world astonished. Among other things, it was presumed that the painting could be an encrypted self-portrait or capture an interior Dürer’s artistic controversy. Anyway, the Magic Square is located at the top right corner of the engraving. It contains 4 × 4 digits and looks like this:

The digits in the square give a numerical sum of 34 repeatedly, even if you sum them up in horizontal, vertical, vertical, corner, diagonally, in individual quadrants. It is certain that the lower row also shows the year when the engraving was created (1514). In addition, there are also the initial letters of the painter’s name and surname, as in the numerological conversion of the letters to the digits the letter D corresponds to the digit 4 and the letter A corresponds to the digit 1.