Can you help me with the bug in this simulation ?

Question

I was making a c# simulation on conway's game of life. I make it working but i than checked with some other simulators out there, and it don't give the same results..?
My simulation is based in a wrap around world.
You can change the grid (cols, rows).

Please help me out!
Thankyou..!

https://code.sololearn.com/cN5pbfrAM0UV/?ref=app

Answer 1

In conways game of life you check each piece for its neighbours. In you movement loop your code iterates at for (int i = -1; i < 2; i++) {
for (int j = -1; j < 2; j++) {
but then you should not use the value i=0 && j=0 for this is the element itself.

Answer 2

But then i subtract the value of itself just after that loop..?