20020608 

First known trimagic square of order 12
The square was first published in the local newspaper 'Schwabacher Tagblatt'.

200303 

Second known trimagic 12x12square derived from 1a by permutations of rows and columns
Found by Pan Fengchu and Gao Zhiyuan, China

20180301 

Holger Danielsson, Germany, found a pair of 3equivalent 4tuples in the square 1b.
This enabled him to obtain the new trimagic squares 1c.

20180128 

A present for the 60th anniversary of LEGO, with 60 ... 28 1 19 58 in the first row.
Additionally several aspects of the square have bimagic semi diagonals.

20180205 

Existence of nonsymmetric trimagic squares of order 12
Certain axially symmetric squares can be transformed into squares which are not symmetric.

20180206 

Nearly equal trimagic squares of order 12
There are essentially different trimagic squares where only 8 digits are different.

20180210 

From a semitrimagic square of order 12 with 3 pairs of possible diagonals
we can derive three essentially different trimagic squares.

20180218 

From a semitrimagic square of order 12 with two specially arranged pairs of possible diagonals
we can obtain two axially symmetric and two nonsymmetric trimagic squares.

20180220 

Square 6 can be transformed in square 6' which has two trimagic broken diagonals.
This is the only found pair of trimagic squares where the distance of parallel diagonals is even.

20180220 

Another trimagic square with two trimagic broken diagonals (distance 5).
These squares have 28 trimagic lines. We couldn't find more until now.

20180305 

The trimagic square 8a has a pair of 3equivalent 4tuples with 4 diagonal entries.
In this case the remaining 8tuples can be interchanged.

20180308 

The trimagic square 9a has three pairs of 3equivalent 4tuples.
All in all we can derive 8 essentially different squares by certain transformations.
