Search found 564 matches

by petero2
Sun Feb 10, 2019 9:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: unit testing polyglot probe code....
Replies: 7
Views: 365

Re: unit testing polyglot probe code....

I'm using perfect2017.bin as opening book. do you know some opening lines containing promotion in the early phases? do you know some opening lines containing en passant moves in the early phases? It is possible to find out by starting from the initial position and following all moves found in the b...
by petero2
Fri Feb 08, 2019 5:44 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish Cluster MPI
Replies: 16
Views: 1088

Re: Stockfish Cluster MPI

I would like to test the stockfish cluster version. https://github.com/official-stockfish/Stockfish/tree/cluster Can someone provide an .exe file? I have uploaded stockfish_cluster_win64.7z to this public dropbox folder: https://www.dropbox.com/sh/v16dye7ww33x7oe/AAAXmGY0phMkB7XlR-vaOxasa/test Stoc...
by petero2
Mon Dec 03, 2018 8:07 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: check extension
Replies: 12
Views: 1170

Re: check extension

Demolito extends checks, whose SEE >= 0. In practice, I've never seen search explosions as a result, but I wonder… Is it possible to have long sequences of checks, which involve no position repetition, and no SEE losing moves? If the checks can also be captures, it is possible to construct a positi...
by petero2
Sun Oct 28, 2018 9:30 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Technical reason why probing N-men syzygy will also probe N-1 men?
Replies: 2
Views: 539

Re: Technical reason why probing N-men syzygy will also probe N-1 men?

In a recent thread I asked why, and got the answer that Ronald, author of the Syzygy endgame tablebases, gave this explanation : The N-1-men will be probed while the N-men are getting probed because of how the compression scheme works. Does anyone know the technical details about it? It is explaine...
by petero2
Sun Jun 24, 2018 9:51 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney June
Replies: 18
Views: 2833

Re: On-line engine blitz tourney June

Leela (LC0-20180622 with network 395) did surpricingly well, it was running on my old i7-5960x with GTX-1080ti. I've been watching most of the games, although Leela is tactically very weak it was able to positionally outmaneuver most other engines, only Texel with his (100 core ???) cluster was a l...
by petero2
Wed May 23, 2018 7:23 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: DTM50
Replies: 7
Views: 1006

Re: DTM50

Here is my suggestion: Store the DTM(100) table as "usual". Store all DTM(x) tables for x<100 in a single file, in an "interleaved" format. That is, the value for position i in the DTM(x) table is stored at position: i * 99 + (99 - x) in the file. Instead of storing the actual value, you store the d...
by petero2
Mon Apr 30, 2018 3:23 am
Forum: Computer Chess Club: General Topics
Topic: chess22k 1.9 released
Replies: 17
Views: 2282

Re: chess22k 1.9 released

Graham Banks wrote:
Damir wrote:Hi Graham

You must install Java on your machine. :) :)
Java is installed, but I see no jar file in the engine folder.
Maybe this link helps.
by petero2
Sun Apr 29, 2018 4:56 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney April
Replies: 50
Views: 5105

Texel games

[pgn] [Event "ICS rated blitz match"] [Site "winboard.nl"] [Date "2018.04.28"] [Round "-"] [White "Texel"] [Black "Marvin"] [Result "1-0"] [WhiteElo "2257"] [BlackElo "1843"] [TimeControl "300+1"] [Annotator "5. +0.06 8... -0.16"] 1. c4 c6 2. d4 d5 3. e3 Nf6 4. b3 Bf5 5. Bd3 {+0.06/17} Bxd3 6. Qxd3 ...
by petero2
Fri Mar 30, 2018 9:22 am
Forum: Computer Chess Club: General Topics
Topic: LCZero: Progress and Scaling. Relation to CCRL Elo
Replies: 604
Views: 87628

Re: LCZero: Progress and Scaling. Relation to CCRL Elo

do you know the elo of the strongest ai chess software today ? http://www.computerchess.org.uk/ccrl/404/rating_list_all.html Look at 1 core performances, as LCZero is on one core too. Stockfish 9 on one core is about 3500 CCRL Elo. I meant software which uses neural networks.is it giraffe ? I think...
by petero2
Sat Mar 24, 2018 7:06 am
Forum: Computer Chess Club: General Topics
Topic: Syzygy implementations of top engines
Replies: 39
Views: 4912

Re: Syzygy implementations of top engines

I think that even if Texel's TB probing strategy is ideal, the result is not ideal because it also depends on how efficient the regular search is. I think that if texel's TB probing strategy was implemented in stockfish, it would likely get lower than 47.80 moves to mate on average for this test su...