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Honestly, it's unexpected. If licensed copies were purchased directly from Buku, how can they prohibit installing the game? Would they then prohibit installing the game on home computers as well? That's absurd.
For many years, we played in the Chaos League, and there were official tournaments organized by the Russian Computer Sports Federation (I even saw the signature of the then-minister, Fetisov, on the document establishing the FCS). Tournaments were held in various clubs. Buku's representatives were in Krasnodar in 2002-2003, and they actively promoted the tournaments.
Sometimes, information appears in documents, but it's questionable.
There's no need to confuse using software for personal use and using it in clubs for profit. The distributor's rights are provided by the company "Russkiy Shchit" for Buku – this information is two years old. The right to use is sold to clubs in packages, i.e., at once for 10-15 games. I can find out if Heroes 3 is included, but I'm afraid that for the club owner, it doesn't matter if he doesn't know this yet; he's operating illegally, and he doesn't care. But if he owns the package, he definitely knows which games are included, because it costs a lot of money.
And one more question for the entire Heroes community: on which version is the final planned to be held, so that there won't be a situation later where someone says, "You should have known better."