Search found 4022 matches

by syzygy
Mon Sep 16, 2019 8:50 pm
Forum: Computer Chess Club: General Topics
Topic: What kind of game is chess?
Replies: 12
Views: 416

Re: What kind of game is chess?

LC0 is weak at tactics. But it knows that, and has learned it should better avoid tactically complex positions. Has it really learned that? That would mean it evaluates positions asymmetrically. Do we know that it does that? Conventional engines are good at tactics. But they are not aware of that. ...
by syzygy
Thu Sep 12, 2019 10:43 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Syzygy 7 piece Machine slow down
Replies: 10
Views: 1160

Re: Syzygy 7 piece Machine slow down

Thanks again and for your patience. I'm using Stockfish and have removed the cache setting. I tried disabling the windows paging file but the computer has problem starting up. So I have had to leave the windows paging file back on and have increased the HASH to 14GB and re-tested. Seems fine, but c...
by syzygy
Thu Sep 05, 2019 7:44 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Syzygy 7 piece Machine slow down
Replies: 10
Views: 1160

Re: Syzygy 7 piece Machine slow down

I was even having issues with 6-piece tb prior to this. My solution for 6-piece on my machine is to set my HASH to 9 GB, and the cache setting to 1 GB. (Leaves 8GB of the 9GB HASH for the machine to work well.) I'm not sure what you mean by "cache setting". If this is about the Nalimov cache (don't...
by syzygy
Sun Sep 01, 2019 6:46 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: deepdebt
Replies: 8
Views: 1354

Re: deepdebt

Henk wrote:
Tue Aug 20, 2019 10:00 am
One should have created a money machine first before spending dollars on research.
Otherwise it won't work.
So that's what Google did.
by syzygy
Fri Aug 30, 2019 12:08 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Syzygy 7 piece Machine slow down
Replies: 10
Views: 1160

Re: Syzygy 7 piece Machine slow down

Hi all thankyou very much. Yes it does appear that the main issue is far too little RAM. I've learnt a few things. Many thanks for all the help. Regards. In addition to increasing SyzygyProbeDepth, you could try disabling the Windows pagefile (which I suppose is on the non-SSD C drive). Most likely...
by syzygy
Sat Aug 24, 2019 4:13 pm
Forum: Computer Chess Club: General Topics
Topic: Where did all these 3400 engines come from?
Replies: 40
Views: 3806

Re: Where did all these 3400 engines come from?

Hello all, I've been getting into computer chess again after a long hiatus due to family responsibilities. Raising 3 children on your own is tough work, so if you had a single Parent at any point in your life, thank them for putting you first before everything. On a side note, where did all these 3...
by syzygy
Wed Aug 14, 2019 8:00 pm
Forum: Computer Chess Club: General Topics
Topic: Does computer chess sponsorship exist?
Replies: 24
Views: 2095

Re: Does computer chess sponsorship exist?

According to talkchess posts, Houdini was sponsored by an Arab Sheikh. I don't have any direct knowledge of that. I thought that was Hydra. They did that one too. Don't think it was Houdini. It was a program by Chrilly Donninger. Houdini has not participated in the usual computer chess tournaments,...
by syzygy
Sun Aug 11, 2019 11:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Bitboard logic: identifying 4 squares in a block
Replies: 8
Views: 1047

Re: Bitboard logic: identifying 4 squares in a block

The board can be any size? What kind of bitboards are those? Can the code not even assume a particular board size? So I'm not really sure what you mean, but I'll just focus on chess. Shouldn't this work (in SF terminology): bool has_square(bitboard b) { b &= shift<EAST>(b); b &= shift<NORTH>(b); ret...
by syzygy
Sun Aug 11, 2019 7:00 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SYZYGY question
Replies: 7
Views: 1292

Re: SYZYGY question

I have been looking at a quirk for a good while the last couple of days. First, here is the troubling position: [D]8/8/8/kPK5/p7/8/1P6/8 w - - ... What am I doing wrong here or is there a bug in this fairly old code for handling your endgame tables? This dates back to 2016 or so, so anything is pos...
by syzygy
Sun Aug 11, 2019 6:55 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: SYZYGY question
Replies: 7
Views: 1292

Re: SYZYGY question

bob wrote:
Sun Aug 11, 2019 2:21 am
What am I doing wrong here or is there a bug in this fairly old code for handling your endgame tables? This dates back to 2016 or so, so anything is possible.
If I am not mistaken, crafty uses the Fathom library. That's where the bug seems to be. Upgrading that code hopefully will help.