I never have a problem with sharing places. If, however, we do wish to distinguish places, then even Swiss + lottery is better than the sorting provided by a continued KO.

Continued KO is just a really really really bad system. Consider the case of more than 3 rounds, e.g. suppose 5 rounds continued KO with 32 players. Then the player in place 16 has 1 win 4 losses and ends above a player with 4 wins, 1 loss. Having one game weight heavier than all other games combined is terrible. Continued KO is an absolutely indefensible system.



I am making the claim than "player's personal preference in opponents" is a bad pairing criterium. Do you agree or disagree?

For the tournament in question, 8 as a power of 2 is guaranteed.

I agree for the SPECIFIC choice of which opponent. I disagree for the GENERIC preference to play against a certain expected number of European opponents in top field of the EGC.

What kind of tournament system is "KO" even referring to? A single-elimination knockout bracket or perhaps a winner stays until defeated kind of arrangement?

FWIW, elimination tournaments should probably be done as seeded double elimination with a reasonable series length (this should guarantee a pretty accurate Top 2/3 or so, rest whatever. Also guarantees two games even to the worst players)

Swiss takes pretty long, but ranks people better. In Magic, the preferred tournament format is random seeded Swiss (byes to up to 3rd round for known professionals) with best of three rounds that is played for N rounds where N depends on turnout. After N rounds the best 8 or 4 (depending again on size) players are cut to a single-elimination knockout tournament that determines the winner (Final or even whole top 8 can be played out with a longer series length than Bo3). It's reasonably accurate yet provides that finals excitement.
This system is decent in Magic but should work even better in Go because:
1. It provides weak people with more games to play.
2. In Magic, the Round 4 field is drastically different than the Round 1 field, which gives pros an advantage in that they can prepare for a narrowe field than the normal people need to. This is not an issue that exists in Go.
3. The cut to Top8 can cause matchup issues based on the chosen decks. Again, not an issue in Go.

straight knock-out

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North Lecale

The system under discussion here is the one used to determine the European Championship.

The original design was 7 rounds of McMahon (a variant of Swiss), then the top 8 European players at that point enter a 3 round single elimination knockout (with, before it, some optional relegation games in case of ties around place 8). Any player knocked out returns to the McMahon.

Now, they have changed it into some kind of freaky continued knockout, where players that are "knocked out" are not actually knocked out, but play against others that were knocked out, and the top 8 is decided entirely on the order of your wins (not the number of your wins). So if you go: win-lose-lose, you are fourth. If you go lose-win-win, you are fifth.

This system goes against everything we know about sensible tournament organization. And the only reason for it is that those European players in the top 8 do not like to play against Asian players. It is an absolute disgrace.

Sorry, but is there any evidence that the top European players have asked for this system?

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North Lecale

In post #3 in this thread, Robert Jasiek wrote (emphasis mine):



And in post #13, he writes (emphasis mine again):



From that, I gather that strong player wishes played a major role in this decision. Certainly, there is no good tournament system based reason for it.

I appreciate that Robert has relayed these words here, but are they accurate? Or is this just a whim of the EGF, or 1 or 2 people who decided to lobby it.

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North Lecale

I don't know. I go by what information I have, which is what was relayed here by Robert.

The committee members who where against the current system are no more members.

It is an absolute vanity affair to decide places #5 to #8 by the k.o. system, those places have absolutely no meaning afaik. If a player who lost the relegation game for the top 8 is able to beat one of the visiting powerhouses the top 8 should not shy away from the challenge.

I personally would be rather disappointed, if the top 8 players that I cheered for are among those who asked for this change.

This is a possible reason some of the Europeans might consider an advantage. I do not know at all for which reasons the EGF Committee set the new rule. E.g., it might have had the reason of "better media coverage", as one can guess from earlier arguments heard of the Committee. It is also possible that those in the Committee in favour of the new rule have had different reasons.

How can four quarter-finals losers determine places 5-8 in just two rounds? Don't you need three? How do you distinguish between places 7 and 8?

magic

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North Lecale

four losers (5-8) play among themselves, which leaves 2 losers-winners (5-6) and 2 losers-losers (7-8). these pairs play the last remaining round to determine the final place for everyone.


i 100% agree that this system is inferior to either playing 8 players swiss or kicking the eliminated players back to open.

on the other hand, i don't find players' general preference in pairing to be an irrelevant criterion for devicing a tournament system. if the strong Europeans didn't wish to play Asians at all and voted for the EC as a separated 10 player round-robin spanning two weeks, i don't think i would mind much. sure, i wouldn't celebrate their courage to face a stronger opposition, and i wouldn't get a chance to celebrate their occasional win against Asians, but otherwise it would seem a legitimate system to me.

only if the current system can get better placement for the Europeans in the Open, then it is wrong to take their preference into account. i think this effect is possible, but not significant, so (hopefully) no issue here.

by the way, one could say that it is incorrect that Europeans don't want to play Asians, only that they want more to play among themselves. however, judging from other discussion, they are indeed not too eager to get regularly bashed.

there are way too many constraints put on the Congress tournaments: reliably choose the European Champion from strong Europeans (without influence of games outside of this group), reliably choose the Open Champion from strong Europeans and strong Asians, let strong Asians play strong Europeans (the more the better), fit this all to two week, or preferably less, with long time allowance and no more than 1 game a day. i don't see a way to satisfy all of these goals, even if i haven't forgotten some

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Spilling gasoline feels good.

I might be wrong, but probably not.