Rating system for online games in Heroes of Might and Magic IV.

Optimal, the question immediately arises: can a newcomer ever catch up to someone who has reached the top in 3 game years? Is it impossible, or are you saying that it will take much more than 0.5 years? How much? - 3 years? - but then that player will already have a rating of 6 years!

Then explain one thing to me: What should be done? Should we remove the veteran and "push" the newcomer forward? There are certainly chances, and not few, not everyone is perfect, so there won't be huge gaps.
And that player who has a high rating but doesn't participate in tournaments will simply be a laughingstock, like in VGAplanat in the archive). That is, his result is not canceled, but it won't be in the table of active players. But if he wants to continue playing, his result goes into the table of active participants and continues to play.

hold on, where do you get Rold? - just the old rating?

Rold is the rating before the game.