Crystal

[Vinvin]

I would be glad to someone who would make a Windows (moderm) compile !

Thanks to Joseph for this gift !
Stockfish has become less and less interesting for analyze because it miss so many obvious moves

[Dann Corbit]

Here is my version:


Unfortunately, I make some changes for my own purposes. You can figure them out with diff.
If you want to use this version, you will probably want to turn off writing the analysis to disk UCI logging option.

There is a 64 bit binary for ancient CPUs and one for SSE CPUs, but I do not have a BMI build in it.

[Marek Soszynski]

Many thanks Dann!

[Vinvin]

Many thanks Dann!

+1

[MikeB]

I had intended to "release" this quite some time ago, but I never seemed to reach a point where I consider it finished (and still have not).

Nevertheless, I thought I would go ahead and post the branch here for those who might be interested.

Crystal remains quite similar to Stockfish, though the departure is greater than MateFinder ever was, and will likely continue to grow over time. The major discriminating factor being the underlying philosophy and reasoning behind the changes.

A few highlights:

0 Default Base Contempt
Dynamic Contempt is a toggle and defaults to false
Analysis Contempt defaults to false
Full key TT
Max Depth 192 (though SF now supports even higher than this using the same trick)
Old depth iteration & display. WYSIWYG as much as possible.
Some small move gen changes
Move legality check moved to movepick
Mate search cutoff
Less LMR near root
Syzygy TB scoring (displayed score reflects the number of pieces remaining on the board and the DTZ)
Emphasis on maximizing the quality of the PV (much less pruning)

Future work will focus on enhanced draw detection, static eval tricks, and greater tactical awareness, though I have no timeline for this. I had hoped to have made more progress than this before release but...

Don't have any builds (and since my CPU is quite old they wouldn't be any good anyway), but the repo is located here:
https://github.com/jhellis3/Stockfish/tree/crystal

Default bench should be: 7215170

Thanks Joe!

[maxdeg]

Many thanks Dann!

+1

[jhellis3]

I have updated Crystal; changes include preliminary game cycle detection and slightly increased tactical awareness.

Sauce: https://github.com/jhellis3/Stockfish/tree/crystal

Bench: 7410759

[Paloma]

Why no binaries?

Most people (more than 95%) can't compile.

[Spliffjiffer]

this is a 64bit compile popcnt (modern)...i cant provide any other...its from the completely unchanged source code by J.Ellis from the link he gave above....hopefully it fits to your system:



its much easier though when u compile Stockfishes (or crystal-SF eg as well) by yourself in the future...therefore i uploaded the SF-BYO (Build Your Own) 2017a edition that i use myself...there is no virus eighter in the 1. nor in the 2. link i gave !!
to use SF-BYO, do this:
1. download it
2. create a new folder on your DESKTOP <-- !!!....renane that folder to eg "180825" (i think 190825 would not work because of a bug !?)...18 is the year, 08 is the month and 25 the day.
3.download the src.code u wish to compile eg J.Ellis crystal from his link above
4.in such downloads there is a folder named "src"...go into this folder and copy the whole content and paste it into the folder u created at the dektop as described before (use the name "180825" just to look if it works proberly)
5.doubbleclick or run the StockfishBYO.exe with administrator-rights
6.a window should open that writes u that a folder named "180825" was found on your desktop...if u did as i said everything from now on goes automatically....it will make a first compile, then tuning (according to your machine nearly perfectly) and then does a last compile...after that the windows closes and a .rar file and a folder was created named "Stockfish" on your desktop
7. open your gui and install the engine as ure used to from this "Stockfish" folder on the desktop...you are done, hf

[Scally]

Here’s a Raspberry Pi binary with uci file:

https://github.com/ScallyBag/AlsPicoEng ... /requested


Cheers,

Al.