It is currently Tue Apr 23, 2024 6:56 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 5 posts ] 
Author Message
Offline
 Post subject: Is an even game on 9X9 really worth 6.5 komi for white ?
Post #1 Posted: Tue Oct 27, 2015 8:11 am 
Beginner

Posts: 12
Location: Jersey, Great Britain
Liked others: 10
Was liked: 2
Look, I'm really, really new to this but, have read a little and grasp the very basics I guess and until a few days ago I only played 9X9 with handicap stones in 'my' favour and Japanese rules 'Territory'.

So, I ventured over to KGS and registered. Played some 27kyu bot and lost by 0.5 points.

Afterwards I found myself asking why, against an obvious beginner ('me'), or anyone at my level ('unknown') why white gets 6.5 komi regardless of opponent and or/ board size?

I know it seems an accepted standard for komi but why is it 6.5 independent of board size or opponent standard?

If this is a FAQ, I apologise.

Top
 Profile  
 
Offline
 Post subject: Re: Is an even game on 9X9 really worth 6.5 komi for white ?
Post #2 Posted: Tue Oct 27, 2015 8:23 am 
Oza

Posts: 2494
Location: DC
Liked others: 157
Was liked: 442
Universal go server handle: skydyr
Online playing schedule: When my wife is out.
Keith White wrote:
Look, I'm really, really new to this but, have read a little and grasp the very basics I guess and until a few days ago I only played 9X9 with handicap stones in 'my' favour and Japanese rules 'Territory'.

So, I ventured over to KGS and registered. Played some 27kyu bot and lost by 0.5 points.

Afterwards I found myself asking why, against an obvious beginner ('me'), or anyone at my level ('unknown') why white gets 6.5 komi regardless of opponent and or/ board size?

I know it seems an accepted standard for komi but why is it 6.5 independent of board size or opponent standard?

If this is a FAQ, I apologise.


There's no clear indication that it should be exactly the same for any given board size. That said, while there are less points on a smaller board, there is also a much larger first-move advantage since white has fewer moves to overcome it. I tend to prefer white with 6.5 komi on 9x9 boards, but I think that this may be more related to my playstyle than its inherent unfairness, and I certainly win and lose a fair proportion of 9x9 games with either colour against relatively evenly matched opponents.

The other side of this is that with a greater relative komi, the style with which you approach the game needs to be more different from one side or the other. On a 9x9 board, black needs to be quite active to overcome the komi, and playing simply to just split the board down the relative middle is practically a guaranteed loss since the komi is almost equal to a full line of the board.


This post by skydyr was liked by: Keith White
Top
 Profile  
 
Offline
 Post subject: Re: Is an even game on 9X9 really worth 6.5 komi for white ?
Post #3 Posted: Tue Oct 27, 2015 8:32 am 
Lives in sente

Posts: 902
Location: Fort Collins, CO
Liked others: 319
Was liked: 287
Rank: AGA 3k
Universal go server handle: jeromie
As a complete beginner, it can make sense to play an even opponent on a 9x9 board without komi. However, on a server like KGS the rules for ranked games are implemented the same way for all ranks. If this were not the case, it would mess up rank comparisons across the server.

The system won't use komi indiscriminately, however. If there is a difference of a single rank between opponents, white gets no komi. If there is a difference of more than one rank, black gets handicap stones and white will have no komi. As your ranks goes up or down, the particular handicap will be adjusted. The idea is to set the handicap such that you will have a good game against opponents of a variety of strengths. When your rank is unknown, the system doesn't have any way to know that the appropriate handicap might be.

As you gain experience, you'll definitely find that komi is necessary to have a good game against an even opponent on a 9x9 board.


This post by jeromie was liked by: Keith White
Top
 Profile  
 
Offline
 Post subject: Re: Is an even game on 9X9 really worth 6.5 komi for white ?
Post #4 Posted: Tue Oct 27, 2015 12:36 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)
Probably not. White most likely needs a little more. On the smaller board there is less time or space to overcome black's inherent advantage in going first and so needs more compensation.

_________________
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
 Post subject: Re: Is an even game on 9X9 really worth 6.5 komi for white ?
Post #5 Posted: Tue Oct 27, 2015 1:11 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 seems that 6.5 for territory and 7.5 for area scoring ends up being a good komi for 9x9.

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

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