T-Number
The t-number is the number at the bottom of the t-shape.
I.e. in the grid above, the t-number is 20.
T-Total
The T-total is the number after adding up the contents of the t-shape. In this case, it’s 37, because 1+2+3+11+20 = 37.
T-Shape
The t-shape is a shape of the portion of numbers to use. It’s been highlighted on the grid for you.
I have noticed that the difference between the t-number and the number above it is always 9. This is also the width of the square.
The difference between the t-totals in succession is 5.
5 is also the amount of numbers there are in a t-shape.
Let the t-number be N.
Let the width (9), be W.
5N – 7W = t-total
Different Sizes and Their Relationship
I know this works for the grid 9 by 9 but I’m not sure if it’ll work for any other grids because there is more intervals in between the first number of each line.
Here is a test for a 10 by 10 grid :
I have noticed that the difference between the t-number and the number above it is now always 10. This is the width of the square.
1+2+3+12+22 = 40
Let’s try my earlier discovered method.
(5x22) – (7x10) =
110 – 70 = 40
Therefore…
5N - 7W = t-total
Conclusion
