Re: [gnugo-devel] Re: [computer-go] Competition of the GO-algorithms

[bump]

Gunnar wrote:

> Pattern ED91 causes black to add a stone at C2. There are many ways in
> which the pattern could be revised but I propose removing it entirely.
> These days the move valuation should be able to understand the
> importance of such moves without an explicit j pattern.

We still see a lot of bad tenukis. I suppose that taking
out j patterns will make the engine weaker in the short run.
It could make the engine stronger in the long run provided
we don't just remove them but try to address the underlying
problems.

Here's a position where ED91 is matched at C11. GNU Go
doesn't tenuki, but instead plays C14. However C14 is
inferior to C11. And of course A12 would be just
bizarre if it got played. Among these 4 moves, C11,
corresponding to pattern ED91 is the best.

Top moves:
1. C14 24.87
2. C13 24.67
3. A12 24.19
4. C11 24.07

  A12: owl attack/defend for B16
  A12: 20.77 - change in territory
  A12: 1.42 - strategic bonus for B16
  A12:   4.00 - total followup value, added 4.00 as
  territorial followup
  A12: 2.00 - added due to followup (4.00) and reverse
  followup values (0.00)
Move generation values A12 to 24.18
  C11: 7.67 - change in territory
  C11: 1.32 - strategic effect on C12
  C11: 1.06 - strategic effect on D10
  C11:   3.64 - total followup value, added 3.64 as
  territorial followup
  C11: 1.82 - added due to followup (3.64) and reverse
  followup values (0.00)
  C11: 0.20 - connects strings (connect value 2, shape
  factor 0.040)
  C11:   24.06 - minimum accepted value
Move generation values C11 to 24.06
  C13: owl attack/defend for B16
  C13: 21.05 - change in territory
  C13: 1.42 - strategic bonus for B16
  C13:   4.00 - total followup value, added 4.00 as
  territorial followup
  C13: 2.00 - added due to followup (4.00) and reverse
  followup values (0.00)
  C13: 0.20 - connects strings (connect value 2, shape
  factor 0.040)
Move generation values C13 to 24.66
  C14: owl attack/defend for B16
  C14: 21.39 - change in territory
  C14: 1.42 - strategic bonus for B16
  C14:   4.12 - total followup value, added 4.12 as
  territorial followup
  C14: 2.06 - added due to followup (4.12) and reverse
  followup values (0.00)
Move generation values C14 to 24.87

Dan