TalkChess.com

Thanks for using some of your CPU time for Lozza 2.0; appreciated.

mar wrote: ↑

Tue Mar 16, 2021 3:02 pm

nice, thanks.
I'm not a javascript guy but where does h come from at line 185 in netCalcGradients?

Cheers Martin. Ah. typo - I'll fix it. Edit. Fixed. Nice catch - copy and paste error

If like me you are new to all this net stuff I recommend Alexander Schiendorfer's blog post called "A worked example of backpropagation". Everything fell into place for me after reading that. https://alexander-schiendorfer.github.io/2020/02/24/a-worked-example-of-backprop.html While working through ...

Graham Banks wrote: ↑

Thu Mar 11, 2021 10:56 pm

Congratulations to Colin (Lozza author)for winning this division and gaining promotion for the next series.

Thanks to all who took an interest.
Enjoyed seeing many of you in the broadcast.

Thanks for running it Graham; it was good fun.

I've added a lozza2.0.zip formal release with instructions about installing Nodejs and tweaking the batch file included in the release. That batch file is then the engine for a chess UI.

https://github.com/op12no2/lozza

If there is still room for improvement, let me know.

I follow the V8 engine twitter account and they are constantly improving it. Very old nodes from ~2015 had some bugs: if I used const instead of var Lozza got slower, ditto if I used switch. I always try and keep up to date with the latest node assuming it's better than previous ones. Performance is...

No not exactly...at the Lozza Github site..notice the wording..."Releases No releases published" There is no section with the releases in zip files like most of the others(exes)...so you are literally "fishing around looking for the correct file and they all say "Lozza.js"...only when they load in ...

Graham Banks wrote: ↑

Wed Feb 24, 2021 9:40 pm

Latest Lozza won't work for me on my popcount i5 (Windows 7).

I've emailed you the source file. it should work OK if node works OK.

These JS engines are a bit strange....On Lozza when I went to rt click and save the engine the size was 2.5 or 2.8 MB (engine won't work) when I downloaded the entire file folder and checked the sizes Lozza was around 200 to 250k.......engine would work...both files said Lozza.js.the real one and t...

Thanks Martin/Guenther,

NB: I did write a UCI shell for GarboChessJS some years ago but when somebody tested it the results were not great and I let it drop. Still have the code though.

Edit: My assumption has always been that I missed up the interface because GarbochessJS was quite strong.