ShashChess

[carldaman]

I've discovered that ShashChessNNUE unfortunately fails to load the nn.bin net file, so it won't work. It won't load the nn.bin file even if the path is correct. It wants to play a3 with a 0.00 eval. It's probably buggy, because StockfishNNUE done by others works just fine.

EDIT: the issue is not present in Brainlearn, which loads the nn properly.

[matejst]

I've discovered that ShashChessNNUE unfortunately fails to load the nn.bin net file, so it won't work. It won't load the nn.bin file even if the path is correct. It wants to play a3 with a 0.00 eval. It's probably buggy, because StockfishNNUE done by others works just fine.

EDIT: the issue is not present in Brainlearn, which loads the nn properly.

The sse41 compile failes to load the nn file; I tried to change the path, then to put the nn.bin in the same folder, but to no avail. The sse42 build is classical ShashChess. No option to load the NN file whatsoever, and its evaluation is ShashChess evaluation. I will try now 32-bit builds to see if they work.

The BrainLearn sse42 build has no options to load an NN file.

[carldaman]

In the case of BrainLearnNNUE, it's working properly and I'm testing it right now. Make sure you use an executable from the profile-nnue subfolder. These nets work best with bmi2/avx2, if your system supports it.

[peter]

https://github.com/amchess/ShashChess/releases/tag/1.0

The compared test result is very impressive IMHO:

https://github.com/amchess/ShashChess/wiki/Matches

Thanks für ShashChess and BrainLearn NNUE!

No path to be given in UCI- options probably means, "nn.bin" only in folder "eval" located in same folder as binary is to be loaded, right?
Yet a UCI- changeable path would be fine, if you'd like to change the net without changing the name of path and or nn.bin sometimes.

[matejst]

Carl,

I use popcount binaries on my older laptop. Yes, I was very careful about the subfolder.

BrainLearn sse42 binary is the wrong one to.

[perejaslav]

And where is the EvalFile=./eval/nn.bin option??

[peter]

And where is the EvalFile=./eval/nn.bin option??

BrainLearn popcnt- compile doesn't have the UCI- option neither and in folder eval (in same main folder as binary) stored nn.bin isn't loaded.

[amchess]

https://github.com/amchess/ShashChess/releases/tag/1.1

[peter]

https://github.com/amchess/ShashChess/releases/tag/1.1

Thanks, Andrea!

Will options Tal, Capablanca and Petrosjan work as usually with NNUE?
Isn't it a kind of hard- coded eval- parameter- setting?
Doesn't NNUE- eval overrule it?

[amchess]

Hi, Peter.
Those options are used in the eval, but also in the search.
So, they change they engine's behavior.