[Computer-go] Komi and the value of the first move

Nick Wedd nick at maproom.co.uk
Mon Apr 5 09:48:33 PDT 2010

In message 
<20100405164506.LPH1C.333821.root at web09-winn.ispmail.private.ntl.com>, 
timothy.maguire at tesco.net writes
>I've been looking at a lot of theoretical questions about Go, and 
>there's a point that seemed interesting and I'd like to know what other 
>people think.
>I read that the value of the first move is accepted to be 20 to 30 points.
>If you consider the effect of black passing rather than making the 
>first move so allowing white to make the first move, then the remainder 
>of the game starting with white's first move and followed by black 
>would be identical to a game with black starting, except with the 
>colours of stones reversed.
>As I see it this would mean that the value of the first move has to be 
>twice the value of the Komi, as it should have eactly the same effect 
>as swapping adding the komi to one side rather than the other, 
>therefore resulting in a change of 2 x Komi to the final score.
>This would put the value of the first move at 13 to 16 points.
>Does anyone have any thoughts on this?

I agree with your reasoning and your conclusion.

I wonder if the source that gave "20 to 30" was Chinese - I think some 
Chinese works use "points" that are half as big as those used by 
Japanese and westerners.

Nick Wedd    nick at maproom.co.uk

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