Search found 686 matches

by Joerg Oster
Sat Jan 25, 2020 6:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Why is MultiPV so slow?
Replies: 22
Views: 715

Re: Why is MultiPV so slow?

Sesse wrote:
Sat Jan 25, 2020 5:59 pm
That's interesting! But shouldn't it still be sub-linear, since the later moves should be cheaper to search (better move ordering, fewer moves to search) than the main PV?
Maybe yes, maybe no. I don't know.
by Joerg Oster
Sat Jan 25, 2020 5:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Why is MultiPV so slow?
Replies: 22
Views: 715

Re: Why is MultiPV so slow?

OK, so potentially we're either looking at something wrong in my timing, or a bona fide Stockfish bug? No bug, it's intentional. When the 1st move is searched as PV move, all remaining moves are being searched as nonPV moves, too! Even those which will be searched as PV moves later anyways! This is...
by Joerg Oster
Fri Jan 24, 2020 4:58 pm
Forum: Computer Chess Club: General Topics
Topic: Alpha subZero - NN for CPU
Replies: 48
Views: 4038

Re: Alpha subZero - NN for CPU

190.1 version just released. https://www.dropbox.com/s/cb26fk2rgh9r76b/alpha%20subzero%20190.1.rar?dl=0 Where is the source? I’ve requested it once before. There is definitely something fishy going on. :lol: Look at this output. uciok position startpos moves d2d4 d7d5 go movetime 10000 info depth 5...
by Joerg Oster
Tue Jan 21, 2020 11:48 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Trying to CLOP again
Replies: 6
Views: 411

Re: Trying to CLOP again

Terje ran a CLOP tune on a code change I did in Ethereal. It looked good on paper. https://i.imgur.com/hbeHzcr.png Except all SPRT tests derived from the values suggested by CLOP failed, and quite resoundingly at that. How the hell could there be a mean +11.7 elo perf over 26K games if it didn't ma...
by Joerg Oster
Mon Dec 23, 2019 3:37 pm
Forum: Computer Chess Club: General Topics
Topic: SF 11 on Christmas?
Replies: 27
Views: 2984

Re: SF 11 on Christmas?

SF was closest to winning at move 57 when the syzygy tablebases say Ra5+ DTZ 36 but played Nf3 that is only DTZ 54 I think that the problem is that the stockfish team do not test from random tablebases positions and only test from random opening positions. They should test patches from random 7 pie...
by Joerg Oster
Sun Nov 17, 2019 10:03 am
Forum: Computer Chess Club: General Topics
Topic: Fritz 17 and Nalimov tablebases
Replies: 13
Views: 1315

Re: Fritz 17 and Nalimov tablebases

keres wrote:
Sun Nov 17, 2019 9:34 am
AdminX wrote:
Sat Nov 16, 2019 8:43 pm
They Work.

Image
I see, but this is not for me and i don't know what i'm wrong.
Make sure you have set the correct path to your Syzygy TB files under File -> Options -> Tablebases -> Syzygy Engines
by Joerg Oster
Sat Nov 16, 2019 12:01 pm
Forum: Computer Chess Club: General Topics
Topic: Fritz 17 and Nalimov tablebases
Replies: 13
Views: 1315

Re: Fritz 17 and Nalimov tablebases

keres wrote:
Sat Nov 16, 2019 11:08 am
Harvey Williamson wrote:
Sat Nov 16, 2019 10:53 am
keres wrote:
Sat Nov 16, 2019 9:49 am
Those my tablebases are not working with new engine Fritz 17, can you to help to me? Thanks in advance.
My guess is that Ginkgo(Fritz17) only supports Syzygy tablebases.
I've Syzygy too, but nothing is working with Fritz 17
Unloading and reloading Fritz 17 engine might help.
by Joerg Oster
Thu Nov 14, 2019 7:00 am
Forum: Computer Chess Club: General Topics
Topic: Fritz 17
Replies: 264
Views: 27940

Re: Fritz 17

Why would you need to buy one ? Long answer: This is unrelated to Fat Fritz, Stockfish has been #1 chess engine for years, and it has been free, yet people keepe buying other commercial chess engines like Komodo or Fritz. They need to buy it because others need to sell them. My computer is 9 years ...
by Joerg Oster
Thu Nov 07, 2019 10:55 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with and without contempt
Replies: 36
Views: 2838

Re: Stockfish with and without contempt

based on what I see, I no reason not to use SF contempt scoring in analysis, but I understand people have their own reasons and that's fine, it is certainly not my way or the highway ;>) - also , note - that SF contempt code is symmetrical ... Are you sure, Mike? To me it looks like Contempt breaks...