Another possible interpretation of this chart is that grade levels are much less well defined at the lower levels, and many players are playing at levels +- one or two stones from where they might be. Note that G+1 and G+2 and in some cases G+3 percentages are only slightly different for some parts of the chart. There are so many different ways to mess up in a game of Go that assigning people to specific ranks is very difficult. The variance in play from one day to the next can be very wide. In the lower ranks, does it really make sense to specify grade exactly? It looks like things straighten out with respect to multiple stone differences in grade somewhere near 5k, which is also about the level when many players begin to play with greater consistency.

Cheers,
David



On 20, Jan 2007, at 7:31 PM, Ray Tayek wrote:

At 05:30 PM 1/20/2007, you wrote:
> what is the win expectancy of 5  dan over 4 dan without handicap?
>
http://gemma.ujf.cas.cz/~cieply/GO/statev.html
 4D   30.6% (out of 4000 games)

this seem to non linear. and indicates that the value of one handicap stone is worth more the stronger you are. which would imply that the differences between the ranks are greater the higher you go (seems like it to me).

thanks

---
vice-chair http://ocjug.org/


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