New engine releases 2020

[abulmo2]

Have fun with it.

Hello! For your information, I cannot use the Linux binary of Dumb 1.6.

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[roland@localhost 16]$ ./dumb-1.6
./dumb-1.6: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by ./dumb-1.6)
[roland@localhost 16]$ 

It seems that I have to compile the source. I search how I can install a D compiler...

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make: ldc2: Command not found

The ldc2 compiler is probably available in your linux distribution, but I always got trouble in using them. I prefer to directly download the last version at github, currently (but 1.25 is coming soon): https://github.com/ldc-developers/ldc/r ... _64.tar.xz
I decompress the package in /opt :

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$ cd /opt
$ sudo tar xf <downloaded path>/ldc2-1.24.0-linux-x86_64.tar.xz

and then add the path to /opt/<ldc directory>/bin to my PATH variable by adding to my .bashrc file the following line:

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export PATH=$PATH:/opt/<ldc directory>/bin

Now ldc2 should work:

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$ ldc2 -v
binary    /opt/ldc/bin/ldc2
version   1.24.0 (DMD v2.094.1, LLVM 11.0.0)
config    /opt/ldc/etc/ldc2.conf (x86_64-unknown-linux-gnu)
Error: No source files

[Roland Chastain]

The ldc2 compiler is probably available in your linux distribution, but I always got trouble in using them. I prefer to directly download the last version at github, currently (but 1.25 is coming soon): https://github.com/ldc-developers/ldc/r ... _64.tar.xz
I decompress the package in /opt :

Code: Select all

$ cd /opt
$ sudo tar xf <downloaded path>/ldc2-1.24.0-linux-x86_64.tar.xz

and then add the path to /opt/<ldc directory>/bin to my PATH variable by adding to my .bashrc file the following line:

Code: Select all

export PATH=$PATH:/opt/<ldc directory>/bin

Now ldc2 should work:

Code: Select all

$ ldc2 -v
binary    /opt/ldc/bin/ldc2
version   1.24.0 (DMD v2.094.1, LLVM 11.0.0)
config    /opt/ldc/etc/ldc2.conf (x86_64-unknown-linux-gnu)
Error: No source files

Thank you for the detailed explanation.

[Angle]

Dumb 1.6:
https://github.com/abulmo/Dumb/releases/tag/1.6

The zip file for the Windows compiles contains two files, supposedly 32 and 64 bits, but the compiles are identical 64 bit compiles.

Sorry, I did not know there was still some 32-bits Windows in the wild . I have uploaded a new zip file that should contain a 32-bits version of Dumb-1.6. Apart support for FRC, Dumb-1.6 brings no improvement over version 1.5, so I see no much interests in testing it as an orthodox chess engine.

My first experience of testing ver. 1.6 as an *orthodox engine* is quite disappoinring. In my current tournament, after 48 rounds it has 12,5 points while ver. 1.5 has 18 points. Although the number of games is very small, I suggest you to check carefully whether you created some bugs in *normal chess* algorithms while implementing FRC support. This reminds me the situation with Bright which became 50-70 elo weaker after implementing FRC.

[abulmo2]

Dumb 1.6:
https://github.com/abulmo/Dumb/releases/tag/1.6

The zip file for the Windows compiles contains two files, supposedly 32 and 64 bits, but the compiles are identical 64 bit compiles.

Sorry, I did not know there was still some 32-bits Windows in the wild . I have uploaded a new zip file that should contain a 32-bits version of Dumb-1.6. Apart support for FRC, Dumb-1.6 brings no improvement over version 1.5, so I see no much interests in testing it as an orthodox chess engine.

My first experience of testing ver. 1.6 as an *orthodox engine* is quite disappoinring. In my current tournament, after 48 rounds it has 12,5 points while ver. 1.5 has 18 points. Although the number of games is very small, I suggest you to check carefully whether you created some bugs in *normal chess* algorithms while implementing FRC support. This reminds me the situation with Bright which became 50-70 elo weaker after implementing FRC.

On a gauntlet test with bullet time control at 10+0.1s I saw no difference between the two versions (1.6 is even ahead):

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10 dumb-1.6              : 2348.9   12.4   1065.0    1900   56.1%
11 dumb-1.5              : 2345.5   12.3   1057.5    1900   55.7%

perft shows no measurable speed difference in the move generator. The only difference in orthodox chess is the order of the two castling moves which are inverted during move generation, but I do not think it has a big impact on the game play. Except for castle handling, I did not change anything important in the code.

[Gabor Szots]

Apart support for FRC, Dumb-1.6 brings no improvement over version 1.5, so I see no much interests in testing it as an orthodox chess engine.

A pity this was not announced at your web page before I started my test. Anyway, I do find it is somewhat stronger than 1.5 (if it's not a statistical fluke) so maybe it was not a wasted time.

[Angle]

Hi there,

Topple 0.8.0 is available.
https://github.com/konsolas/ToppleChess/

Best
Frank

Hi Frank,
The code execution cannot proceed because libwinpthread-1 was not found

Download libwinpthread-1.dll (64 bit) here:
https://www.mediafire.com/file/u9zp8bx5 ... 1.zip/file

[Frank Quisinsky]

Hi Angle,

you can find the solution on my site for "Engine Configuration":
https://www.amateurschach.de/main/_configuration.htm

Or the link with frame in menue system of my site:
https://www.amateurschach.de

Best
Frank

[bastiball]

Hi there,

Topple 0.8.0 is available.
https://github.com/konsolas/ToppleChess/

Best
Frank

Hi Frank,
The code execution cannot proceed because libwinpthread-1 was not found

Download libwinpthread-1.dll (64 bit) here:
https://www.mediafire.com/file/u9zp8bx5 ... 1.zip/file

It is now working, Thanks Angle!

[Angle]

you can find the solution on my site for "Engine Configuration":
https://www.amateurschach.de/main/_configuration.htm

Or the link with frame in menue system of my site:
https://www.amateurschach.de

Hi, Frank! I have already solved my problem by downloading a proper dll (initially I downloaded a 32 bit dll instead of 64 bit). Now everything works fine.