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Hi, As I mentioned in another thread there could be different types of NNUEs. The one related to game phase could be called King shelter. That is, bonus for pawns usually in front of the king. This should work well in middlegame , securing the king from opponents attacks. In endgame however this is ...

In addition to currently used Neural Network (NN) , there could be more NN in chess engines. The current one AFAIK is KPST. I can call it a tactical NN. Positional NN is the one with Piece being able to move to an empty square. Considering that the empty "to" square gains no material; I expect Stati...

In the following game Stockfish plays an aggressive Maroczy bind: https://www.chessgames.com/perl/chessgame?gid=1713461 [Event "nTCEC - Stage 1"] [Site "http://www.tcec-chess.net"] [Date "2013.02.19"] [EventDate "2013.01.22"] [Round "7.3"] [Result "1-0"] [White "Stockfish (Computer)"] [Black "Rybka ...

As an example for positional NN consider this: Stockfish 11 64-bit against Houdini 6 64-bit in CCRL Blitz 2r1r1k1/1p2qpp1/p2p1b2/3P4/n1P4p/1N3P2/PPRQB1PP/1R5K w - - 0 23 Here Stockfish played Bf1 and went on to lose the game with this passive bishop. Alternative is f4. White gains moves like Bg4. Ac...

[...] A NN with KPST is a tactical one , IMHO. One can develop a strategical NN with what you say , PST. Only piece and it's legal or pseudo legal moves can be considered. In the end the output of two networks (tactical/positional) could be combined with a small NN in eval. To clarify, I would say l...

It would probably do well, but what I am afraid of is that in comparison it would not do very much better than ignoring the King location alltogether (ie. an NNUE network built on PST rather than KPST). Because it is always implied reasonably accurately where the Kings can be found. For Chess and S...

Michael Sherwin wrote: ↑

Sun Apr 12, 2020 11:11 pm

A really large function has many local variables and accesses many global variables.

[...]

I recommend breaking a large function into smaller ones. Each new function doing what it's name suggests. You should not use a function that has many arguments.

I added code like this , is it OK ?

Hi, I changed CFLAGS to following in XBoard Makefile (any better way?). Now there seems to be some problems with timeZone. CFLAGS = -std=c11 -Wall -Wextra -pedantic Note that I used -Weverything but I removed this since it produced massive number of warnings. Now: #if HAVE_GETTIMEOFDAY #include <sys...

The tournament is finished. Caruana won the event scoring 10/13. Firouzja is placed 9th scoring 6.5/13 . Full table is here .