Einstein’s Number Puzzle

Einstein was solving complex mathematical equations from the age of 12. Numbers were a tool for his theories and maybe 264 was important! So the goal of the puzzle is to place the numbers on the wooden frame in such a way that each line (horizontal, vertical, diagonal) has a sum of 264. If you rotate the puzzle 180° on the plane, several numbers change: 16 becomes 91, 66 becomes 99 etc. The sums should again be the same regardless of the orientation of the square or the numbers! If you like Sudoku, math, if you want to stimulate your thinking and improve your logical associations, this puzzle is the right choice.