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Intel VTune for this. It's normally very expensive, but for opensource/non-corporate use, it's free

VTune is only free for non-commerical use on Linux. If you're on the Windows platform, you can get a free trial version, though.

"Best Single Versions" for 40/20 has 3 versions of Lc0 and 2 versions of Komodo MCTS:

http://www.cegt.net/40_40%20Rating%20Li ... liste.html

I use an annotated PGN file for inputting and maintaining manually tuned weights and opening lines. I edit these in Chessbase, export to PGN, and build the opening book from that PGN + selected unannotated PGN from human, computer, and correspondence games. Arasan has a custom format opening book, a...

One example: you detect a draw before you have searched any moves. Now, if the previous move was illegal you don't want to return a draw score. You should return an illegal move indicator of some kind. I return -Illegal, which comes back to the caller (which inverts the score) as the constant Illega...

In general though, whenever you have any early exit from search, you should take care that you are correctly handling the case of a previous illegal move.

The whole line starting 12. Nxe5 and going through 15. .. a5 has actually been played in multiple games, for example Ivanchuk-So, Tata Steel-A 2015. Pavlovic annotating this says "it had been worked out by computers," so it was known previously and apparently found by at least some engines, maybe in...

I think the main problem with test sets like STS is age That's a valid point. Unless there's a forced mate or tablebase win, deeper search can always possibly find a hole in existing analysis. Although my understanding is STS is really designed to test positional understanding, not tactics, so that...

The general rule is, don't do dynamic memory allocation (on the heap) for anything. Especially not anything that might be time-critical.

--Jon

I have created a separate repository containing just the "stats" directory from Fishtest, as a single Python 3 package. It is self-contained. See: https://github.com/jdart1/stats This implements the pentanomial SPRT model. The original code is from Michel Van den Bergh and I have only made small cha...

I agree, C++ is quite difficult for a beginning programmer, and if you are learning the language, a chess program probably shouldn't be your first project.

--Jon