Hello,

during the last weekend I have tried (for the
first time) to use commercial go programs 
to analyse some games played between human 
players (on KGS).
The idea was to use the bots for blunderchecks.
So, I was looking for positions where the
evaluation (in win  percentages) jumped or
dropped between consecutive moves.


*** Concrete Example ***

Amongst others I looked at a game between
bwilcox[3d] and harleqin [2d], played on April 20,
2009, starting time 5:31 [CEST]. You can download
the sgf for instance from the KGS archive at
http://www.gokgs.com/gameArchives.jsp?user=Harleqin

(By the way, bwilcox might be Bruce Wilcox, one of
the veterans in computer go.)


Both programs in my analysis "claimed" that 
77.f13 was a big error:
* In Leela the score dropped from 50.5 to 41.4 .
* In ManyFaces the score dropped from 50.0 to 45.8 .

Instead of 77.f13, both programs proposed 77.d14,
with the possible continuation 78.e14 79.d13 .

I discussed these "findings" with Harleqin, and
he agreed that 77.f13 was a move that brought him
into problems.


*** General Wish ***

Unfortunately current, (commercial) go programs
(including Leela and ManyFaces) do not have a user 
interface that allows for COMFORTABLE analysis of
games. The user has to click lots of buttons when 
jumping back and forth in some sgf.

My wish is to have something similar to that, what has become 
standard in computer chess programs in the mid 1990's:
* on the left half of the screen the diagram of the board
* on the right half a list (not only sgf, but also with 
  move numbers included)
* the program is computing in analysis (infinite) mode
* when the user clicks (by mouse) on any move in the move list
  then the program jumps immediately to this position and
  starts analysing (of course this position is shown in the diagram)
* of course the screen should all the time show (in fat font)
  what the value of komi in the game under investigation is.

* Another big wish: the programs should allow for some k-best mode
where not only the best but the k best moves are computed (k being
some integer specified by the user).

Ingo.
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