Search found 3892 matches

by jdart
Sun Oct 25, 2020 10:36 pm
Forum: Computer Chess Club: General Topics
Topic: interesting position
Replies: 7
Views: 382

Re: interesting position

It looks to me like this is due to over-aggressive null move pruning, which makes sense, because some of the key lines (for example after the position I posted with "e3" bm) require one or more "quiet" moves to gain an advantage, and that is the sort of thing null move prunes away. I do use verifica...
by jdart
Sat Oct 24, 2020 2:38 pm
Forum: Computer Chess Club: General Topics
Topic: Arasan 22.1
Replies: 14
Views: 1778

Re: Arasan 22.1

> However, it seems that it doesn't simulate 'thinking' by wasting it's time; in other words, if set to a lower strength, the engine moves immediately. Is this correct?

It does add idle time to the search. But maybe not enough to be noticeable.

--Jon
by jdart
Sat Oct 24, 2020 1:25 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Have you ever debugged something that wasn't broken?
Replies: 1
Views: 152

Re: Have you ever debugged something that wasn't broken?

You can give them this feeback via info@cheessbase.com.

They do fix things in their programs via updates. I really wish they'd fix the resource leaks in ChessBaxe that make you have to shut it down and restart every once in a while.
by jdart
Fri Oct 23, 2020 9:03 pm
Forum: Computer Chess Club: General Topics
Topic: interesting position
Replies: 7
Views: 382

Re: interesting position

Just another note: I said this is a sac, but it isn't really because the pawn is pinned. However, Black was already down material (2 pawns) and is still down one after Nxh4.

--Jon
by jdart
Fri Oct 23, 2020 2:32 pm
Forum: Computer Chess Club: General Topics
Topic: interesting position
Replies: 7
Views: 382

interesting position

I have recently been spending quite a bit of time looking at this position, from a game ArasanX-WaspX on FICS recently; 8/6p1/p4p1k/8/4pNqP/PP2PnP1/3r1PK1/2R2Q2 b - - 0 1 Here Wasp played the sac Nxh4+ and won. Arasan saw the move, but not that it is winning for Black. The difficulty is that once Bl...
by jdart
Tue Oct 20, 2020 5:18 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ethereal Tuning - Data Dump
Replies: 17
Views: 1795

Re: Ethereal Tuning - Data Dump

I also go no improvement with the 12.52 training set over my default set. In fact it was a regression. YMMV.

--Jon
by jdart
Sat Oct 17, 2020 10:37 pm
Forum: Computer Chess Club: General Topics
Topic: Busted French line?
Replies: 13
Views: 2160

Re: Busted French line?

I have a bunch of opening books. Hiarcs book recommends 5. Nf3. A line from that book, also found in the Chessbase French Powerbook 2018, goes:

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Ng8 5. Nf3 Ne7 6. Bd3 Nbc6 7. O-O Nb4 8. Be2
Nbc6 9. Qd3

with very good stats for White.
by jdart
Tue Oct 13, 2020 2:39 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Linux friendly engines at all levels
Replies: 60
Views: 8557

Re: Linux friendly engines at all levels

make clang: error: no input files expr: syntax error awk: syntax error at source line 1 context is BEGIN{print CCVER >>> >= <<< awk: illegal statement at source line 1 awk: illegal statement at source line 1 Makefile:186: *** GCC version is : versions < not supported. Stop. You need to follow the b...
by jdart
Tue Oct 13, 2020 2:54 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Linux friendly engines at all levels
Replies: 60
Views: 8557

Re: Linux friendly engines at all levels

maksimKorzh wrote:
Mon Oct 12, 2020 10:51 pm
It would be great, Oliver, I'd appreciate that (pull request would be just awesome). Could you also post what the errors are? I have no idea what compilers are used on MacOS.
The MacOS standard compiler nowadays is clang.
by jdart
Mon Oct 12, 2020 10:20 pm
Forum: Computer Chess Club: General Topics
Topic: Future of computer chess: 2 top engines?
Replies: 34
Views: 2780

Re: Future of computer chess: 2 top engines?

Lc0 is interesting because it finds lines other engines miss, but it still seems like it also steps into blunders that other engines will not fall for.