Re: [computer-go] chess and go ratings

[Don Dailey <drd@xxxxxxx>]

Very nice analysis.  Thanks.  

I think your  are right about the Go scale being  wider than the chess
scale.  But  it's difficult to  prove because GO doesn't  use anything
like ELO.

A friend  of mine  who was a  very strong chess  player (international
master) and also loved GO, felt there were more "levels" of competence
in Go.  

In order to understand this,  we need to know how many ELO levels
there are in GO.  My friend believed that if you used an ELO system
with the "average player" centered at 1500 like in chess,  the top
players would have much higher ELO ratings than the top chess players.
I assume that's what you mean by "wider."

- Don






   Date: Thu, 4 Dec 2003 18:27:03 +0100
   From: Jerome Abela <jerome.abela@xxxxxxxxxxxxxxxxx>
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   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.

   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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