New release Pedone 2.0

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Fabio Gobbato
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Joined: Fri Apr 11, 2014 8:45 am
Full name: Fabio Gobbato
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New release Pedone 2.0

Post by Fabio Gobbato » Wed Jan 01, 2020 4:09 pm

I have just released a new version of my engine.

This are the changes:

Tuning
Probcut
Removed razoring
Speed optimizations
Store in the hash a move also in allnodes
Fixed a bug with multipv
Don't reduce a low depths
LMP tuning
SEE pruning tuning
Use history ordering also in qsearch
Clear killer at ply+1
Multi-cut
Singular extension conditions tuned
Don't reduce countermove
Don't prune with futility the countermove
Prune killers with LMP
Improved reductions formula
Improved aspiration window
Included in the executable the 4men syzygy tables
Improved king safety evaluation
Improved shield and storm evaluation
Evaluate pieces attacked after pawn pushes
Up to 512 threads for the parallel search
Improved parallel search
Parallel initialization of the tt

At short time control is about 60 elo stronger than 1.9 but it could be less at ccrl or cegt time controls.
You can download the engine from its web page: https://sites.google.com/site/pedonechess

Gabor Szots
Posts: 623
Joined: Sat Jul 21, 2018 5:43 am
Location: Szentendre, Hungary
Full name: Gabor Szots

Re: New release Pedone 2.0

Post by Gabor Szots » Wed Jan 01, 2020 4:52 pm

Thank you very much, Fabio. Good start for the new year.

What I noticed at first sight is the big size difference to v1.9. Why is that?
Gabor Szots
CCRL testing group

Fabio Gobbato
Posts: 157
Joined: Fri Apr 11, 2014 8:45 am
Full name: Fabio Gobbato
Contact:

Re: New release Pedone 2.0

Post by Fabio Gobbato » Wed Jan 01, 2020 7:21 pm

I have included in the executable the 4men syzygy tables.

Jamal Bubker
Posts: 313
Joined: Mon May 24, 2010 2:32 pm

Re: New release Pedone 2.0

Post by Jamal Bubker » Wed Jan 01, 2020 10:33 pm

Thank you very much Fabio !!

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