Many thanks to Ment for the technical support!
Finally, the map has become multiplayer, which means you can now play it with three friends.
This version is recommended because the map in its current state is much better suited for playing with real people, as the computer simply doesn't have enough "brainpower" to play it the way you'd like.
However, I also found this map quite interesting in single-player mode, although the computer doesn't use most of the tactical possibilities and behaves predictably, as usual.
The updated, latest version is now in Ment's post number 53, page 6, as you can see, and also in the first, title post. I've updated it for convenience.