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The Hartmut bug?

Public forum discussion.

Twixt

#1 · David J Bush

15 Jan 2011

Hartmut pointed out to me he was surprised he was promoted to league 1 in the current championship 27. Indeed, the tournament chart for 26.2.2 shows he placed fifth. Above him, Pierre Toloup is not playing this cycle, but Zandor and Methylphenidate are, and they are still in league 2. So, Mirko Rahn and Hartmut got promoted, but as far as I can tell from the guidelines, it should have been Mirko and Zandor.

I just wonder how often has this been going on? Is there an explanation I am missing?

I'm not complaining that I play Hartmut! But I am complaining about a bug if there is one.

#2 · kingofthebesI

15 Jan 2011

I think that it has something to do with his rating, I went from division 3 to 1 at GWG because of my rating.

#4 · Hartmut

16 Jan 2011

I read that explanation, but I see it like David, I should not be there. If rating (partially?) decides who is runner up for next level, why should one play for place 2 in the group? No, even with a good rating when losing more games I do not deserve to play level 1 then. This is at least how I understand a common league system known from many sports out there. I didn't take my chance last time playing just average, so I should have stayed on level 2.

PS: the games ar fun anyway, on level 2 or 1 :-)

#5 · Aganju

17 Jan 2011

I agree, and I think there is no such coding as 'take everyone scored above the average and add him in that level'. That would be recursive, self-destroying and contradicting: Imaging the average in a 8-player top level group is 2000, and there are two players with 2010 and 2100. After adding them in, the average is now 2011, so you need to take the first one back out? Or if you don't do that, the list of players that are 'in' depends on the sequence you add them. Also, it could happen that there are a hundred players with score higher than that average, so you end up with a single group of 100+ players?

The code - and yes, this is a guess, but I'm pretty sure - takes the participants from last Championship that made the cut (1-5 or whatever), adds the ones that were in the go-up ranks of the next lower level (2 times 1-2), ignoring all those that don't want to participate, of course.

Then, if there are empty slots, they are filled with the highest ranking participants, excluding only those that were on a go-down slot last Championship.

Repeat for next league, etc.

That means if there are lots of dropouts in higher leagues, you could end up being pretty low positioned in league 4, and still playing league 3, 2, or even 1 next time.

If this seems inappropriate - think again, on who else should get into that slot? I think it is a pretty good and fair solution.

Be aware that this opens a way into first league if you are not able to win second league - you opt out for one Championship, make sure you have a top rating, and you then opt back in. Chances are high that there is a slot in league 1 (someone always drops out), and you will get in.

#6 · Hartmut

17 Jan 2011

@Aganju: that's all okay. There are "effects" due to passing players / new players. But how could I go up from level 2 to 1 while Zandor, having a better group result on level 2 in my last CC group, did not? We both did not opt out for a CC.

#7 · dushoff

26 May 2011

I agree with Aganju's theory: first priority for promotion is spots 1-2, but there is no difference between 3, 4 or 5 when filling extra spots.