TalkChess.com

You can view move selection as an example of the "multi-armed bandit" problem. You have a prior distribution of outcomes (win/loss/draw) and you are trying to optimize the future "payout" (score). There is a very large literature on this but one approach is called Thompson Sampling (https://en.wikip...

Ferret competed in quite a few tournaments from 1995-early 2000s, and it was active on chessclub.com. Some games are available here:

http://www.chessgames.com/perl/chessplayer?pid=30003

Nordlandia wrote: ↑

Sat Jul 06, 2019 5:54 pm

MikeB: if you have time please comfirm whether cutechess gui adjourn 7-piece positions.

It doesn't. See:

https://github.com/cutechess/cutechess/issues/499

Which Fathom are you using? Is it https://github.com/jdart1/Fathom? If the command-line tool works on your position, then you have to be passing something different into the API for it to not work for you. You do have to call tb_init first. Btw. the newer and now preferred root level probing API cal...

I wouldn't conclude it is software - could be your disk is failing/has bad sectors.

You could try to reinstall the OS from media. You might find this helpful (no guarantees):

https://www.intowindows.com/how-to-rein ... sing-data/

I noticed arasanx-64-bmi2.exe (BMI2 but non-NUMA build) was missing from the engine archive (arasan21.4.zip) so I updated it to include that.

--Jon

Some King attacks are still not trivial for programs to execute, especially when there are quiet moves (zwischenzuegen) in the PV, or one or more sacrifices are involved.

--Jon

Arasan 21.4 is available from https://www.arasanchess.org Changes in Arasan 21.4: 1) Update to use latest Fathom library with 7-man tb support. 2) Use Fathom ranking API for tb moves at root. 3) Changes to extension logic. 4) Use IID score to improve eval value for pruning, as is done with hash scor...

If you're managing thousands of machines, then your nightmare is the failed mass upgrade, where you roll something out and then there are major problems. So these organizations delay updates, typically, letting somebody else have that problem and hopefully having it fixed by the vendor before they s...

Generally speaking, when ahead, you want to exchange pieces but not pawns. Especially, you don't want to exchange away your last pawn, because quite a few material configurations with no pawns but more pieces are draws or drawish, notably Rook + minor vs. Rook. You also though need to tune any such ...