Re: [gnugo-devel] games against 3.3.16

[SP LEE]

> Recently it was reported here that 3.3.19 did poorly against
> 3.3.16, so I collected 95 games between the current CVS and
> 3.3.16. It seems that or 3.3.16 does a little better.
>
> In these games 3.3.16 is Black and the komi is 5.5. Black
> won 52 of the games, or 54% of the games, and the mean
> score is 2.12 points in favor of Black.
>
> I'm attaching the 66 point game at the end. I didn't see anything
> too unexpected in White's play, just the kind of same kind
> of mistakes that we've been seeing in every game. W happened
> to lose a group early and never recovered.
>
> So although this twogtp run is a little disappointing I don't
> think it's a showstopper for 3.4.
>
> Game records available on request.
>
> Dan

Here is little additional information about the game. The owl analysis is 
good, giving O18 as defend move for move 48. However, the tactical reading 
value for N18 is too high.

 N18: defense of worm M18
 N18: -2.03 - suspected ineffective defense of worm M18
 N18:   5.33 (followup) - threatens to capture L18
 N18: 15.36 - change in territory
 N18:   6.40 - total followup value, added 1.07 as territorial followup
 N18: 3.20 - added due to followup (6.40) and reverse followup values 
(0.00)
 N18: 0.63 - connects strings (connect value 6, shape factor 0.126)
 N18:   35.00 - minimum accepted value
Move generation values N18 to 35.00

Top moves:
1. N18 35.01
2. O18 28.30
3. M19 14.88
4. K11 14.55
5. J10 14.14
6. J9  12.72
7. H10 12.35
8. J11 12.35
9. E13 10.71
10. J6  10.68
Checking safety of a white move at N18
Move generation likes N18 with value 35.01
genmove() recommends N18 with value 35.01
= N18

SP Lee

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