[usr1106]

For the visual patterns on the map that does not make a major difference.

* Obviously for all of the same color it makes no difference

* For all 4 of different colors the pattern still does not change, it's just randomly colored

* In case of 2 colors it's highly likely that the first half will have one color and the second one another. Nothing changes.

* In the less likely case the 3 have one color and the remaining one is different the resulting pattern is a triangle. So the direction of the diagonal will flip. But I don't think the overall impression will change.

In higher level squares replace "color" by "pattern", still no significant changes in appearance. Of course the two lower squares always swap their location.

[omoikane]

Maybe the image would look just as random if a space filling curve were used, but I was hoping it would resemble the XKCD image somewhat.

I have tried to rearrange the pixels to see if there is any resemblance, here:

https://gist.github.com/uguu-org/5dadec83394d9ba5ea88e0f6e25...