Murderous Maths
Making 4 x 4 Magic Squares

Magic Squares are covered in a lot more detail in
The Magic of Maths
and
Murderous Maths: Bend Your Brain
Kjartan shows how this magic square can produce the target number in at least 24 different ways. These include the 4 horizontal and 4 vertical lines, the two diagonals and the four corners.
  • Any "target" number can be chosen for the square, but it's best between 20 and 50.
  • The numbers in grey squares remain the same.
  • The numbers in yellow squares are dependent on the "target number".
  • x = (the target number - 20). Therefore if the target is 39, x = (39-20) = 19.
  • Fill in x and also (x-1), (x+1) and (x+2) in the indicated places.
811x1
x-12712
3x+296
1054x+1


This completed square adds up to 39 in just about every way you can think of. Look at the diagram below for help!
811191
182712
32196
105420

Murderous Maths

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