TalkChess.com

I have 2 additional questions about NNUE encoding 1) why square for black is calculated as sq^63 and not as sq^56? it's not a vertical mirro, but is cn be encoed as 63-sq, am i wrong? 2) why piece indices start from 1 and not to 0? this lead to 641 pieces and not 640, but it seems to me that the +1 ...

thank you,
you are always very clear and polite

ok understood. just another question, even if it is not related to this topic. does the "standard" stockfish NNUE feature encoding also encode the capture square, if a capture is performed? No. so what does this mean? 41,024 = 64 * 641. 64 comes from the number of the cells where king may exist. 64...

In the NNUE playing code, it does exactly nothing. Those weights are simply not used. Just like the weights corresponding to a piece on the same square as the friendly king. so those unused features can be used to encode some other information e.g. castling rights. Obviously those added feature nee...

ok understood.

just another question, even if it is not related to this topic.

does the "standard" stockfish NNUE feature encoding also encode the capture square, if a capture is performed?

I read and read, tried to find info, looked at some implementation, but failed to find useful information

can someone explain it simply or point me to a simple article?

Sorry for being out of topic, Some time ago I totally refactor the syzygy code using Stockfish code as reference. in the end I have a codebase with unit-test and very much faster that Fathom. The main speed problem of fathom is that it does not use the chess engine position representation, but it re...

When saving to TT you have to store: "from this node it's a mate in 3"

When reading from TT you have to translate it to: "from root node it's a mate in 5"

Hi boys,

I'm switching form Windows to Linux. i'm searching a good GUI to analize chess positions.
I already know cutechess to play engine-eniine games and tournaments, but what about analizyng?

I know from the past Scid

I have an idea in mind, but at the moment Vajolet needs to be refactored a lot to implemnt it. Probably now I'll have the time to try and implement it. The idea is to do somethingh like multiPV to have the exact value of le'ts say 20 PV. I think that when searching with 100 threads having all them s...