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I can’t find the pairings in the official site, anyone?
Yeah this is just the rankings
I didn’t actually see a pairing list, just the players info cards on the tables so you know where to sit.
The actual pairing is supposed to be a Swiss pairing with split and slide I think it was.
So I think it should be for the 60 players, 1 vs 31, 2 vs 32 etc if they’re sorted by rank, however that works.
Then I guess the same but for the scores from round 2 on, players with 1 win top vs middle, then players with 0 wins top vs middle etc.
Will see if I can find any more info tomorrow.
The first round is drawn randomly, The second round onward the opponents are assigned with the same or similar score up to that point. (winners against winners, losers against losers, 2win1loss vs 22in1loss, etc.)
It’s definitely not random. Typically the top players are assured not to play each other.
Generally from what I’ve seen the pairings were 7D vs 3D say, then approx 5D vs 1D or 1kyu etc down.
I found a photo online for example
Ukraine 7D vs Serbia 2D ( I think)
Japan 7D vs Slovenia 3D
Finland 4D vs Argentina 4k
Israel 5D vs Ireland 1k
Etc
Pretty sure it was seeded by rank and then slide pairing, but there isn’t a list of all the pairings that I can find.
Maybe it is based on the previous year’s ranking groups. (A vs C, B vs D)
Definitely seems possible but probably needs to be adjusted slightly for countries that are/aren’t there.
I only have a vague memory that a decade ago it was like seeding in 2 groups with stronger and weaker halves based on players’ declared rank, but it doesn’t look like it is the case anymore (otherwise we shouldn’t see 7d vs 3d in the first round, that’s why I guess it was a random draw at first, and then probably historical records, while new country/territory probably just through in at the bottom?)
This year it’s a 7 round Swiss according to Intro : 국무총리배 세계아마바둑선수권대회
But doesn’t specify how they seed/pair the first round, doesn’t look random, or simple pairing by numbers, but based on strength somehow.
(although probably doesn’t matter that much in the end, since the few top players will run into each other in later runs regardless)
Swiss is normally done by either fold or slide, after ordering people by strength.
With 60 people: fold means you have 1 vs 60, 2 vs 59, 3 vs 48 and so on. Slide means 1 vs 31, 2 vs 32, 3 vs 33 and so on.
For the cross-table at 국무총리배 세계아마바둑선수권대회, it’s hard to tell what’s going on, because they haven’t numbered people in order of strength, and you have to cross-reference Players : 국무총리배 세계아마바둑선수권대회 to find out people’s ranks. But it looks like round 1 had a 7D vs 2D match-up and a 3D vs 5K match-up, as if they were trying to do slide pairings but slipped a little bit? Or maybe they have 2D from one country ranked as stronger than 3D from another country?
That’s why I said from the looks of it, it’s not a simple fold or slid for the initial pairing just with declared strength, but suspect using the previous year’s ranking groups, where the representative players in each country this year can change and differ, but seeding is based on the historical record (where the country’s strongest player usually doesn’t change much in strength but can vary a bit, and the different ranking standard within each country doesn’t need to be comparable)
When I went a few years ago, the draw was done so that the top 4 seeds were kept apart for the first few rounds, i.e. no China vs Korea “final” in early rounds.
It’s 100% this one because they told us in the orientation
They just don’t put up a full list of the pairings that I can find. The player cards are just on the table when you arrive.
Hmm, so how do they seed/sort the original number? Based on declared strength? If this is the case, the 7D vs 3D 1st round game must mean the number 31 players must be at least 3D (but considering so many players in the whole list aren’t dan players, this doesn’t make sense, is the middle actually 3D?)
I know years ago they would split two groups in the first round with strong and weak group, but I was never sure how they split them.
Yes, the middle is 3d, I checked on the list of players.
Player’s declared strength surely has increased a lot over the years from what I remembered. I also checked the player’s list, and was surprised to see like 7 or 8 3D players, and that begs the question, how do they slip in the middle where there are several players with the same rank in the middle of the pack? Those who got lucky to get to the top half would have a much easier (almost guaranteed win) in the first round. (and the unlucky 3d who got to the bottom half would almost certainly lose the first round against the top 4 players)
There’s only 15 kyu players out of 60 I think. There’s about 15 or 16 6D and above players too. I think it makes sense.