Hi Topsquark,

The website is very good!

I used the uniform step method but the square which it produced is not magic.

Uniform step method does not gurantee can product a filled magic square.

Here is the example of application of U S M of 5 x 5 magic square with magic sum 60:

19_7_20_13_1

10_3_16_9_22

6_24_12_0_18

2_15_8_21_14

23_11_4_17_5

you need to set the value of a , b , c, d, e, f,

a = 4 ( since x0=4)

b = 3 (since y0=3)

c=1 (xj move RHS by 1)

d = 2(yj move up by 2)

e = 1 ( xj move RHS by 1 from 0 to 5)

f = 3 (yj move up by 3 from 0 to 5)

note:

you can put the initial number (0) anywhere in the cell. so a, b is changing according to the position of the initial number.

c , d is fixed

e and f apply when

0 jump to 5,

5 jump to 10

10 jump to 15

15 jump to 20

Hope this information is helpful to you.

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But this one will work as a regular square

0_5_10_15

11_14_1_4

13_8_7_2

6_3_12_9

Finally, I solved it!

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Can anyone construct the below 9 x 9 square?

# Construct a 9 x 9 filled, magic square using the integers from 0 to 80. Your magic square should additionally have the property that when it is divided into ninths, each 3 x 3 subsquare is also magic.