OFB-12

Why bother figuring out how the program calculates it (it would be good to know for the future, of course)? According to the regulations, there can't be any 0.5:

6. A win in a game earns 3 points, a draw earns 1 point, and a loss earns 0 points.
Places are determined based on the total points earned.
In case of a tie in points, additional criteria apply in order of priority:
1) Buchholz coefficient;
2) Number of wins;
3) Head-to-head result;

We calculate the Buchholz coefficient ourselves and determine the top 3 among those who scored 18 points. Otherwise, it contradicts the tournament regulations: the Buchholz coefficient, not the coefficient provided by the program, is the determining factor.

What does "we calculate the Buchholz coefficient ourselves" mean? Does that mean we can calculate it ourselves, but according to what principles? Do you have accurate information (not just from Wikipedia, but from more reliable sources) on how to calculate it correctly?

The thing is, for games that weren't played, including those where players withdrew, points should be added to the coefficient, and that's how it was done in previous tournaments. But in OFB-11, the Buchholz coefficient wasn't needed, and no one tested this principle. In OFB-10, it also wasn't needed, but there, 1-0.5-0 points were awarded instead of 3-1-0.
In OFB-9, the Buchholz coefficient determined the seventh participant in the FB, and there, 2-1-0 points were awarded (I don't know what the "evil romantic" used back then).

In our case, a 3-1-0 point system was used.
First question: how many points should be awarded for an unplayed game? As we've found out, the program awards 0.5. Ideally, it should be 1, like for a draw. But what's the correct way?

Second question: if we recalculate it ourselves, should we do it according to the program's logic or another?

Third question: what should we do about the Tvarina coefficient, which the same program calculates differently for me and Dirty?

Here are the possible solutions:
1. Leave it as is. This is bad because of the controversial Tvarina coefficient.
2. Calculate it manually. This seems like the optimal option, but the question remains of how to calculate it correctly.
3. Play-off matches, but...

And transitional matches before the tournament should have been announced...

I agree with this statement.

In general, we're still thinking about it. If anyone believes they know exactly how to calculate it correctly, please let us know.