I'm going to estimate that 100 ELO is roughly 1 rank based on this:

     http://en.wikipedia.org/wiki/Go_ranks_and_ratings

This may not hold for 9x9.    If a 1 kyu beats a 2kyu about 64% of the
time in an even game at 19x19,  it doesn't imply that he will do the
same at 9x9,  but until I have a reason to believe differently I will
set this as our first guess in the formula.    We can always come back
and modify this later.

We may be able to borrow KGS data of well established players playing
9x9 games against each other to estimate this.     Would anyone like to
volunteer to do this?

So as it stands, our formula is:

      3ky = 1942 cgos_elo

   dan =  (your_elo - 2142) / 100   
   kyu  = -dan + 1

    1 Dan  =  2242 cgos
    1 Kyu   =  2142 cgos
    2 Kyu   =  2042 cgos
    3 Kyu   =  1942 cgos

The strongest bot on CGOS all time list seems to be  greenpeep0.5.1
<http://cgos.boardspace.net/9x9/cross/greenpeep0.5.1.html> with a rating
of 2621.

This implies it is almost equal to a 5 Dan player - which doesn't sound
right to me.    However,  this could be fluky since it is as at the
extreme end of the scale.      It would be great if this same program
could play some strong humans at the equivalent time control on KGS at
9x9 and we could adjust the difference between ranks accordingly.   

I suspect there is more than 100 ELO between ranks at 9x9.  

- Don



Don Dailey wrote:
> Christoph,
>
> Your bayeselo rating is 1942 on CGOS.      I compiled a table that has
> all players with 50 games or more which can be found here:
>
>   http://cgos.boardspace.net/9x9/hof2.html
>
>
> - Don
>
>
>
>
>
>
>
>
>
>
> Christoph Birk wrote:
>   
>> On Tue, 11 Dec 2007, Don Dailey wrote:
>>     
>>> Christoph,
>>> Let me know when you are finished,  what name you are playing under and
>>> I will do the bayeselo thing to get a better figure.
>>>       
>> I am playing using the 'tast-3k' account. Right, now I have 71 games
>> and a rating of 1979 ELO.
>>
>>     
>>>      Also, I can
>>> throw out any games that were irregular if you can identify them,  such
>>> as if  a match started when you were not looking or your interface got
>>> glitchy or something.
>>>       
>> Since I added the GUI I lost no games due to software problems.
>> Only a few "won" games lost to human stupidity :-)
>>
>> I will take a break over the holidays, maybe playing a few more
>> games in the new year, but I guess for my purposes a zero-point
>>    "3k-AGA ~=~ 2000 CGOS-ELO"
>> is close enough. Unless we get some other (AGA or KGS) rated
>> players it not make sense to get a more precise rating for the
>> scale.
>>
>> Christoph
>> _______________________________________________
>> computer-go mailing list
>> computer-go@computer-go.org
>> http://www.computer-go.org/mailman/listinfo/computer-go/
>>
>>     
>
>   
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