Aha, could it be that Gomorra picked up some good lines from
MyGoFriend and then improves upon them? Because when kaesebrot turned
up I think it really crushed Valkyria for some time. I have now
updated the book used for Valkyria3.5.15-4cx a little bit.
MyGoFriend plays different from most other programs in the opening, my
guess is that MGF does not suffers from some bias inherent in most MC
programs and thus plays more natural (from human aesthetic point of
view) and stronger moves. perhaps it uses some high quality pattern
matching to bias the tree part and does not use AMAF or RAVE at all.
My problem is that AMAF/RAVE makes Valkyria very strong and at the
same time it currently sets a ceiling on how strong it can play
because in many positions it seems to completely miss some very strong
moves systematically and it is very hard to fix that because it so
deeply rooted in an otherwise very efficient selective search process.
Valkyria3.5.14-4cx is using exactly the same book as in Kanazawa and
Valkyria3.5.15-4cx probably just have a lot of bugfixes and changes to
the playouts. This does not mean that the program now plays stronger.
Sometimes changing the way it behaves in some tactical situations
makes it get into new kinds of fights that reveal more bugs... Also
balancing the ability to judge whether an invasion is possible or not
can be disturbed by adding "better" knowledge to it I believe.
Best
Magnus
Quoting Lars Schäfers <[email protected]>:
Hi Magnus,
kaesebrot is german for cheese-bread and was a test version of Gomorra.
It has an adaptive opening book and makes a lot of computations after
every lost game. Thats why it disappeared after every lost game for a
while. So not a new program.
Valkyria is constantly doing very well. Also at the olympiade in
Kanazawa it got a good 5th rank with very limited hardware. I was really
impressed.
It appears to me that Gomorra likes the >2600 Elo Versions much more
than the <2600 Elo Versions of Valkyria. I would give a cheese-bread for
informations about the difference between Valkyria3.5.14-4cx and
Valkyria3.5.15-4cx :)
Best wishes,
Lars
On Tue, 2010-10-26 at 08:48 +0200, [email protected] wrote:
Hi all!
The last days there has been some increased activity on CGOS 9x9.
MyGoFriend is back and shows it is really strong. I am playing with
Valkyria using the opening library developed for the Kanazawa
tournament. It is not so helpful yet against MyGoFriend as it plays
different line than what I was prepared for.
Furthermore other mysterious programs has appeared such as Ghosper and
Kaesebrot. At least one of those I think is Mogo given the way it
plays the opening. They have not so high rankings yet, maybe because
of bugs that makes them lost against very weak programs. They are
doing very well against Valkyria and MyGofriend.
Right now a strong version of ToGo is playing. So it would be fun to
the same kind of activity there was on 19x19 CGOS some time ago.
I am also sure the programmers of those unknown programs read this and
it would be really nice to have a presentation of the programs here on
the list too :-) You do not have to tell all the secrets!
Best
Magnus
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