New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

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Steve Maughan
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New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by Steve Maughan » Sun Jul 22, 2018 11:58 pm

Richard Pijl has been kind enough to released The Baron 3.43. This is almost identical to the version that played in the 2018 WCCC. Here are Richard’s release notes:

Changes since 3.42:
Bugs solved:
  • Pin detection in evaluation only detected close pins.
    Handle spaces in the syzygy path
    Slightly more restrictive in playing easy moves
    Fixed singular extensions bug
    Increased search stack size
Improvement:
  • Detecting pins to the queen
    Evaluation tuning
    Better use of time, especially on short time controls
    More selective in quiescence
    Reduced aspiration window
Changes since 3.41:
Bugs solved:
  • UCI mode possible from the command prompt
    Handling missing dtz files correctly (I hope)
    Show Refutations is disabled as I did not have the time yet to look at it.
Improvement:
  • Changed scoring on TB hits
    Keep probing TB during search on reaching TB positions
    Added Syzygy path option to UCI
    Ported to Raspberry Pi
    Full functionality available in native Linux version
    Refactoring of several classes
You can download it using the ling below, along with The Baron’s opening book (in Polyglot format):

https://www.chessprogramming.net/new-ve ... ning-book/
http://www.chessprogramming.net - Maverick Chess Engine

tmokonen
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by tmokonen » Mon Jul 23, 2018 1:06 am

Thank you Richard for the engine, and Steve for hosting it.

However... when I try download the book, the download link points to the same file as the engine download.

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Graham Banks
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by Graham Banks » Mon Jul 23, 2018 1:19 am

tmokonen wrote:
Mon Jul 23, 2018 1:06 am
Thank you Richard for the engine, and Steve for hosting it.
+1
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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CMCanavessi
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by CMCanavessi » Mon Jul 23, 2018 1:50 am

Thanx a lot for this new version!
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls

tmokonen
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by tmokonen » Mon Jul 23, 2018 2:25 am

OK, I think I figured out the link for the book:

https://maughancdn.s3.amazonaws.com/che ... book30.zip


matejst
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by matejst » Mon Jul 23, 2018 8:46 am

Great news! Thank you, Steve, and, of course Richard.

Damir
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by Damir » Mon Jul 23, 2018 9:55 am

Thanks for a very nice engine Richard. I hope you keep on improving Baron. :) :) :D

Colin-G
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by Colin-G » Mon Jul 23, 2018 4:47 pm

The 32 bit version does not work at all on my computer running Win XP 32 bit.
The cpu is athlon64 but does not have popcnt instruction, so thats probably why.
The 64 bit version works ok in Arena with wine in Mint 18.1 (different computer) but crashes as soon as it is used after the path to my 5 man Syzygy files is entered in the .ini file.
The 64 bit version works as a UCI engine in Arena in Windows 10 (another computer) but fails when trying to analyse my test position which I use to check whether my 5 man Syzygy files are being used.

It immediately plays Ne3 and the game is drawn after pawn takes knight!
I removed the .ini file, turned off learning, deleted the learn file, deleted the path to the Syzygy files, restarted Baron and Arena but it makes this move every time?
Other engines, which use Syzygy, have no problem with this position, which is mate in 30.

Colin-G
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Re: New WCCC Version of The Baron Released (Plus Polyglot Opening Book)

Post by Colin-G » Tue Jul 24, 2018 8:34 am

Please ignore the comments about the 64bit version problems in my previous post.
They seem to work ok this morning.
The 32bit version still fails on that computer, its ok on the others.
I was unable to edit or delete the post.

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