Stage of the Van Kaneghem Tournaments for HEROES II!!! "Continuing to continue!"

I'm having trouble capturing an opponent's Castle. Is there any material on this topic?

AlexSpl thoroughly researched this issue, and it is published in the general section for the second game. Also, some information on this topic can be found in numerous articles by Qwerty, but whether I wrote anything separately on this topic, I don't remember anymore.