Life In 19x19

Lian Xiao defeated Piao Wenyao by resign.
Peng Liyao defeated Sakai Hideyuki by resign.
Park Junghwan defeated Chun Guangya by resign.
Won Seongjin defeated Tan Xiao by resign.
Lee Younggu defeated Li Xuanhao by resign.
Shi Yue defeated Yuki Satoshi vy resign.
Li Kang defeated Yoda Norimoto by 4.5.
Gu Li defeeated Park Seunghwa by resign.
Jiang Weijie defeated Cho U by resign.
Na Hyun defeated Dang Yifei by resign.
Choi Kihoon defeated Niu Yutian by 0.5.
Lee Changho defeated Liu Xing by resign.
Kang Dongyoon defeated Meng Tailing by resign.
Choi Cheolhan defeated Xie He by resign.
Xiao Zhenghao defeated Zhou Heyang by resign.

Still playing......

Kong Jie vs Lee Sedol

Pictures,
http://www.cyberoro.com/news/news_view.oro?num=516704

Lee Sedol defeated Kong Jie By resign

Korean players seem in a good shape. if my brief observation is correct, the first round went 9:1 in Korea-China matches

Laman wrote:Lee Sedol defeated Kong Jie By resign

Korean players seem in a good shape. if my brief observation is correct, the first round went 9:1 in Korea-China matches

Gu Li and Jiang Weijie both beat Koreans but your observation still stands.

Not Jiang Weijie. Cho U is a Japanese player (and he's native Taiwanese if that's what you meant).

Did not know this started until today. Kind of wish I knew yesterday, no work today, could have stayed up all night, especially with the first day of a Honinbo game going on... (curse you eastern time zone!)

Some interesting match ups here. Definitely hope to see a kifu/review of that Lee Sedol v. Kong Jie match up.

edit: Go Game Guru just posted an update about the LG, there are records for 4 of the matches Lee Sedol v. Kong Jie, Choi Cheolhan v. Xie He, Cho U v. Jiang Wiejie and Na Hyun v. Dang Yifei. Check them out here: http://gogameguru.com/17th-lg-cup-road/

Pairing for round of 16,
Choi Kihoon vs Won Seongjin
Lee Sedol vs Shi Yue
Na Hyun vs Jiang Weijie
Lee Younggu vs Xiao Zhenghao
Park Junghwan vs Lian Xiao
Choi Cheolhan vs Gu Li
Kang Dongyoon vs Peng Liyao
Lee Changho vs Li Kang


More pictures,

http://www.cyberoro.com/news/news_view.oro?num=516706

http://www.cyberoro.com/news/news_view.oro?num=516707

trout wrote:Pairing for round of 16,
Choi Kihoon vs Won Seongjin
Lee Sedol vs Shi Yue
Na Hyun vs Jiang Weijie
Lee Younggu vs Xiao Zhenghao
Park Junghwan vs Lian Xiao
Choi Cheolhan vs Gu Li
Kang Dongyoon vs Peng Liyao
Lee Changho vs Li Kang...

Looking at them by nationality, the pairings look like this:

K v K
K v C
K v C
K v T
K v C
K v C
K v C
K v C

I infer that there is a pairing rule that two people of the same country are not paired against each other unless absolutely necessary. Does anyone know the pairing algorithm?

Btw, the Korean Baduk Association site has some nice photos at http://www.baduk.or.kr/info/report_view ... =&keyword= . With everyone together in one big hall, it might seem to get a little noisy during byo-yomi. But they do get a long main time (3 1/2 hours?), and I suppose everyone is concentrating on his own game, anyway.

If you are a beginning Hangul reader like me, you might find the training quiz at http://www.aeriagloris.com/LearnKorean/ useful (I'm starting to be able to read the names of the pairings, for example).

Joaz Banbeck wrote:I infer that there is a pairing rule that two people of the same country are not paired against each other unless absolutely necessary. Does anyone know the pairing algorithm?

Joaz, the pairings are random; from the photos, we see that the players all pick a fan at the start with 2 fans of the same number from 1 to 16, and that determines the pairings. It seems a bit strange that there is no seeding, but of course the top 32 in the world are all gods anyway.

eoi wrote:Joaz, the pairings are random; from the photos, we see that the players all pick a fan at the start with 2 fans of the same number from 1 to 16, and that determines the pairings. It seems a bit strange that there is no seeding, but of course the top 32 in the world are all gods anyway.

i don't know, do they repeat the random pairing in subsequent rounds? i was under impression that it is done only once at the beginning.

but if the pairings are not based on the drawn numbers (and i don't see a connection between numbers and round #2 pairing), it is unclear why to draw them for only one round

furthermore, not having a fixed bracket takes away an important advantage of the knock-out for me - you can't predict who will meet whom in the following rounds. though i perfectly understand how would it suck to go all the way to Korea and play players from my home country.

eoi wrote:

trout wrote:For picture, follow link.
http://www.cyberoro.com/news/news_view.oro?num=516701

http://www.tygem.com/news/news/viewpage ... &findword=

Ah, from the pictures, the pairing method is to choose a fan with your opponent's number on it. A little classier than the pieces of paper in the shodan tournament in Hikaru, but same idea.

Hikaru no Go 8 is about the insei elimination tournament, in which inseis, as well as outsiders who qualify, battle to get a place in the pro tournament. Everyone draws a folded paper from a box and the matched numbers play. In the tournament, you have to get 3 wins out of 5 games to qualify, so after 3 games there is a re-drawing without those who win 3 or lose 3. In the story, the last drawing on the 5th day has an odd number of people, and Hikaru draws a blank paper, a bye, so qualifies. (I've been rereading Hikaru lately to practice my Japanese.)

Laman wrote:i don't know, do they repeat the random pairing in subsequent rounds? i was under impression that it is done only once at the beginning.

My understanding is that the initial pairing determines your spot in games 1 through 16, and so determines the entire draw. For example, you get the tournament table in http://igokisen.web.fc2.com/wr/lg.html . But yes, I agree that it does seem a bit strange. Fair, though!

I don't know whether pairing selection for this round is just random or not. Some tournament try to avoid players from same country playing each other and others don't.

I can remember seeing a first-round pairing in an international tournament that I think was Lee Sedol vs. Gu Li, and just going "What!?". I suppose the pros from different countries don't play each other enough to get a reliable international ranking (unlike tennis, where they all play each other in most tournaments).

I wish they would. I'd like to see frequent international tournaments, and also an international league (like team tennis, heh). Nongshim and Jeongganjang (now Huanglongshi) are so much fun.

eoi wrote:

Joaz Banbeck wrote:I infer that there is a pairing rule that two people of the same country are not paired against each other unless absolutely necessary. Does anyone know the pairing algorithm?

Joaz, the pairings are random...

Hmmm... pardon me, but I'm sceptical. Let's see...

Of 16 people there are 9 Koreans. Call them K1, K2...K9. There are 6 Chinese. Call them C1 thru C6. The Taiwanese we will call T1.

I start with T1. He gets a randomly chosen opponent, who happens to be Korean. There are 9 Koreans out of 15 possible opponents, so the odds are 3 out of 5.

Next, I'll take C1 and randomly pair him. There are 8 Ks left of 13 people. The odds that he gets a K are 8/13.

Next is C2. The odds that he gets a K are 7/11.

Then C3. His odds are 6/9 = 2/3.

For C4, the odds of a K are 5/7.

For C5, the odds are 4/5.

For C6, the odds are 1/1, for there are only Ks left.

The cumulative odds of all of this happening are 3/5 * 8/13 * 7/11 * 2/3 * 5/7 * 4/5 = 6720/75075 or slightly less than 9 percent.

Ok, it could be random.