Re: [computer-go] chess and go ratings

[Vincent Diepeveen <diep@xxxxxxxxx>]

At 18:27 4-12-2003 +0100, Jerome Abela wrote:
>On Thu, Dec 04, 2003 at 04:58:40PM +0000, Nick Wedd wrote:
>> >Even though my chess level is comparable to 2nd dan professional in chess
>> >though, the only real advantage i might have at a 9x9 go board, is that it
>> >has just 64 squares which i am used to.
>> 
>> How do you compare chess levels with go ratings?  Can you give the Elo 
>> number corresponding to amateur 1-dan?  or the go grade corresponding to 
>> "strong club player"?  As press officer of the British Go Association 
>> people sometimes ask me this, and I don't know how to give a helpful 
>> answer.
>
>100 Elo = 0.69 winning expectancy = 1 Go grade



>But the Go scale is wider than the chess scale. Here are two
>ways to compare both scales.

Not really chess scales more. K factor = 15 and later even K=10 
in chess when getting at professional level.

That means that when i play someone same rating that i can win 0.5 * k points.

So that's 5 points.

Reality is that i usually play opponents lower rated so a player has to win
most games or one will drop in rating.

In go it's 2000 years older system where you can buy your 1 dan grade.

>If you align on the beginners, you get the following table, which
>only shows how the Go scale is wider than its chess counterpart,
>but is meaningless as an equivalence table:
>
>                       Chess       Go
>     Total beginner   1000 Elo   20 Kyu   Total beginner
>Typical club player   1500 Elo   15 Kyu
>                      2000 Elo   10 Kyu   Typical club player
>                      2500 Elo    5 Kyu   Typical club player
>  Maximum reachable   3000 Elo    1 Dan
>                      3500 Elo    6 Dan
>                      4000 Elo    9 Pro   World champions
>
>If you scale the scales, you can get a feeling of how strong
>someone is by comparing to the other game:
>
>     Total beginner   1000 Elo   20 Kyu   Total beginner
>Typical club player   1300 Elo   15 Kyu
>Typical club player   1600 Elo   10 Kyu   Typical club player
>Typical club player   1900 Elo    5 Kyu   Typical club player
>                      2200 Elo    1 Dan
>   Intl GrandMaster   2500 Elo    6 Dan   Best european players
>    World champions   2800 Elo    9 Pro   World champions
>
>
>Jerome.
>
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