It is currently Wed Apr 30, 2025 4:46 pm

View unanswered posts | View active topics View unread posts | View new posts | View your posts


Board index » Life In 19x19.com General Topics » General Go Chat

All times are UTC - 8 hours [ DST ]



Post new topic Reply to topic  Page 1 of 1
  [ 13 posts ] 
  Print view Previous topic | Next topic 
Author Message
Offline cgbspender
 Post subject: Quintuple Ko : CHECK !
Post #1 Posted: Thu Mar 20, 2014 6:14 pm 
Dies in gote

Posts: 37
Location: France - Britanny
Liked others: 5
Was liked: 14
Rank: kgs 4d
KGS: cgbspender
Here's a record by Ohashi Hirufumi (6p) against a strong opponent - Kubo Niwa, if google's translation is not too far off (please someone confirm), in which occured a quintuple Ko.

As far as I know, this is the first example of a quintuple ko happening in a real game. It was played on June 30th, 2013.
I'm surprised I found no mention of it on L19, maybe I just missed the thread.

You can find his short article about it here : http://blog.goo.ne.jp/minamijyuujisei_1984/e/57b92a566d71afd1af1afa169e6a6788
and you can replay his game there : http://gokifu.net/t.php?s=1601372600398612

I also add the sgf here, so in case the previous links break (or my computer crashes), at least it will be saved.



Enjoy !

cgb


Attachments:
quintuple_ko_1.sgf [1.89 KiB]
Downloaded 521 times

_________________
Staying true to myself.
This post by cgbspender was liked by 3 people: Bonobo, Joaz Banbeck, tundra
Top
 Profile  
 
Offline EdLee
 Post subject:
Post #2 Posted: Thu Mar 20, 2014 10:26 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
cgbspender, Thanks. It's fun to hold down the Right Arrow key to fast forward and see all the flip-flopping ko's. :)
Top
 Profile  
 
Offline oren
 Post subject: Re: Quintuple Ko : CHECK !
Post #3 Posted: Thu Mar 20, 2014 10:28 pm 
Oza
User avatar

Posts: 2777
Location: Seattle, WA
Liked others: 251
Was liked: 549
KGS: oren
Tygem: oren740, orenl
IGS: oren
Wbaduk: oren
It was probably never mentioned because it was a teaching game against an amateur in a 3 person simul. It's interesting for fun, but it didn't happen in an official pro match.
Top
 Profile  
 
Offline TheBigH
 Post subject: Re: Quintuple Ko : CHECK !
Post #4 Posted: Fri Mar 21, 2014 5:12 am 
Lives in gote

Posts: 323
Location: Geelong, Australia
Liked others: 199
Was liked: 76
Rank: OGS 9kyu
That's remarkable.

_________________
Poka King of the south east.
Top
 Profile  
 
Offline Abyssinica
 Post subject: Re: Quintuple Ko : CHECK !
Post #5 Posted: Fri Mar 21, 2014 8:02 pm 
Lives in gote
User avatar

Posts: 660
Liked others: 25
Was liked: 124
Rank: Miserable 4k
KGS: STOP STALKING ME
I would hate to record that kifu.

This post by Abyssinica was liked by: Bonobo
Top
 Profile  
 
Offline DrStraw
 Post subject: Re: Quintuple Ko : CHECK !
Post #6 Posted: Fri Mar 21, 2014 8:11 pm 
Oza

Posts: 2180
Location: ʍoquıɐɹ ǝɥʇ ɹǝʌo 'ǝɹǝɥʍǝɯos
Liked others: 237
Was liked: 662
Rank: AGA 5d
GD Posts: 4312
Online playing schedule: Every tenth February 29th from 20:00-20:01 (if time permits)
Abyssinica wrote:
I would hate to record that kifu.


They probably just created the game record after it was all over, simply because of the unusual finish.

_________________
Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).
Top
 Profile  
 
Offline vier
 Post subject: Re: Quintuple Ko : CHECK !
Post #7 Posted: Sat Mar 22, 2014 7:45 am 
Dies with sente

Posts: 91
Liked others: 8
Was liked: 29
cgbspender wrote:
Here's a record by Ohashi Hirufumi (6p) against a strong opponent - Kubo Niwa, in which occured a quintuple Ko. It was played on June 30th, 2013.
You can find his short article about it here : http://blog.goo.ne.jp/minamijyuujisei_1984/e/57b92a566d71afd1af1afa169e6a6788
I also add the sgf here, so in case the previous links break (or my computer crashes), at least it will be saved : http://musicfromjapan.free.fr/quintuple_ko_1.sgf.

cgb

Yes, nice! I suppose you took the sgf from http://homepages.cwi.nl/~aeb/go/rules/quadruple_ko.html#5ko, but there no player names or dates are given.
Maybe White is Ohashi Hirofumi (6p)? Maybe Black is Kuboniwa Takashi? Maybe the game was on 2013-06-29?
Top
 Profile  
 
Offline Dante31
 Post subject: Re: Quintuple Ko : CHECK !
Post #8 Posted: Sat Mar 22, 2014 2:53 pm 
Lives with ko
User avatar

Posts: 129
Liked others: 5
Was liked: 14
Rank: KGS 4k
Fun game
Top
 Profile  
 
Offline Matti
 Post subject: Re: Quintuple Ko : CHECK !
Post #9 Posted: Mon Mar 31, 2014 6:41 am 
Lives in gote

Posts: 309
Liked others: 3
Was liked: 41
Rank: 5 dan
Nice.
Top
 Profile  
 
Offline Joaz Banbeck
 Post subject: Re: Quintuple Ko : CHECK !
Post #10 Posted: Mon Mar 31, 2014 10:38 am 
Judan
User avatar

Posts: 5546
Location: Banbeck Vale
Liked others: 1104
Was liked: 1457
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Abyssinica wrote:
I would hate to record that kifu.


Why? It is easy. At the bottom of every kifu page is a space for recording additional stones played on a point.

Quote:
...
305. Takes ko
306. Takes ko
307. Takes ko
308. Takes ko
309. Takes ko
310. Takes ko
311. Takes ko
312. Takes ko
313. Takes ko
314. Takes ko
315. Takes ko
316. Takes ko
317. Takes ko
318. Takes ko
319. Takes ko
320. Takes ko
...

_________________
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207

This post by Joaz Banbeck was liked by 2 people: daal, DrStraw
Top
 Profile  
 
Offline Butteche
 Post subject: Re: Quintuple Ko : CHECK !
Post #11 Posted: Sat Apr 22, 2017 11:00 am 
Beginner

Posts: 9
Liked others: 3
Was liked: 9
Looking at this game, I'm not sure why white doesn't take the five black stones in the top left. That seems to break the quintuple ko apart as far as I understand it, but I haven't studied it deeply. What's up with this?
Top
 Profile  
 
Offline John Fairbairn
 Post subject: Re: Quintuple Ko : CHECK !
Post #12 Posted: Sat Apr 22, 2017 11:19 am 
Oza

Posts: 3723
Liked others: 20
Was liked: 4671
Quote:
Here's a record by Ohashi Hirufumi (6p) against a strong opponent - Kubo Niwa, if google's translation is not too far off (please someone confirm), in which occured a quintuple Ko.

As far as I know, this is the first example of a quintuple ko happening in a real game. It was played on June 30th, 2013.
I'm surprised I found no mention of it on L19, maybe I just missed the thread.


I mentioned it over a year ago as being one of two quintuple ko games in the GoGoD database. The first was from 1937. Both involved amateurs, and the latest one was from a simultaneous display, so we need not take them too seriously.
Top
 Profile  
 
Offline alphaville
 Post subject: Re: Quintuple Ko : CHECK !
Post #13 Posted: Sat Apr 22, 2017 11:19 pm 
Dies with sente

Posts: 101
Liked others: 24
Was liked: 16
How strong is Kuboniwa, is there any extra information about this player?
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 13 posts ] 

Board index » Life In 19x19.com General Topics » General Go Chat

All times are UTC - 8 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 1 guest

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group