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

Well, maybe it's still not worth creating the formula this way; it seems a bit excessive... Then, simply:

Rnew=Rold-N*2

What do you think, would a coefficient of k=2 work? In general, does Online allow for many skipped games? I'm not entirely sure; it seems to me that we should primarily base it on this...:)

It all depends on the number of players and the tournament system...
In general, there are about 3-4-5 skipped games.
Therefore, I don't think K should be large)
Based on this, I'm inclined to K<1, let's say
Rnew=Rold-N*0.75...
But if a player has only skipped 1 or 2 games, then K should be smaller than K for skipping 3 or more games.
That is:
IF Players >3, Rnew=Rold-N*(k<1)
IF Players <3, Rnew=Rold-N*k1<(k<1)
:)