Search found 3115 matches

by Eelco de Groot
Sun Mar 15, 2020 10:32 am
Forum: Computer Chess Club: General Topics
Topic: Off topic: problems attaching files
Replies: 1
Views: 277

Re: Off topic: problems attaching files

Since a few months this forum does not accept attachments anymore. It could be a problem of settings, but probably the administrator would say keeping the database of messages intact has a higher prioprity and total storage is limited by the finances set aside to this forum by sponsor ChessUSA. But ...
by Eelco de Groot
Thu Mar 05, 2020 9:00 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish and latest +6 ELO patch!
Replies: 7
Views: 1313

Re: Stockfish and latest +6 ELO patch!

Maybe in some endgames there are big tuning changes still waiting, and this functionally changes just something right? As Protospring is saying, the bench right now is not really affected by a lot of endgame changes, they are not triggered in the searched positions. But it is a functional change fro...
by Eelco de Groot
Fri Feb 21, 2020 3:16 pm
Forum: Computer Chess Club: General Topics
Topic: 32 bit Windows users needed ...
Replies: 11
Views: 989

Re: 32 bit Windows users needed ...

I just had a quick look but from that, i'm afraid these are likely not working Mike. Stockfish-022120 does open a command window on my 15 year old system, but I can't enter a command like 'uci' to test anything. Bluefish-022120 also opens a command window but gives a message saying it can not find e...
by Eelco de Groot
Sat Feb 15, 2020 7:57 pm
Forum: Computer Chess Club: General Topics
Topic: Plaskett's Chess Puzzle Solved in ~15 minutes
Replies: 45
Views: 8817

Re: Plaskett's Chess Puzzle Solved in ~15 minutes

Vondele found a bug in the use of VALUE_MATE_IN _MAX_PLY when having tablebases on board. Looks like not really a fault of vanilla Stockfish code but more of the later added tablebase code in Stockfish in my opinion. But Mikes version probably does not have the bugfix, Stockfish Dev does, as of tod...
by Eelco de Groot
Sat Feb 15, 2020 7:16 pm
Forum: Computer Chess Club: General Topics
Topic: Plaskett's Chess Puzzle Solved in ~15 minutes
Replies: 45
Views: 8817

Re: Plaskett's Chess Puzzle Solved in ~15 minutes

Vondele found a bug in the use of VALUE_MATE_IN _MAX_PLY when having tablebases on board. Looks like not really a fault of vanilla Stockfish code but more of the later added tablebase code in Stockfish in my opinion. But Mikes version probably does not have the bugfix, Stockfish Dev does, as of toda...
by Eelco de Groot
Fri Jan 24, 2020 6:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Is razoring useless in modern engines ?
Replies: 10
Views: 2000

Re: Is razoring useless in modern engines ?

There is some interaction probably between the two, but at alternate plies in this case, you do probcut when you have a very good position, but nullmove did not work because you need a tactical solution. (nullmoveing not very good if you have tactics) the search is then shortened a lot and your alph...
by Eelco de Groot
Wed Jan 22, 2020 5:51 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Is razoring useless in modern engines ?
Replies: 10
Views: 2000

Re: Is razoring useless in modern engines ?

In Stockfish, I think it is more a case of some overlap with all the LMR rules. Razoring is done at depth < 2 and LMR for depth >= 3 so maybe either of these could incorporate depth = 2 (or LMR more of the razoring depths) Of course these reductions are still different in very many ways/subrules (of...
by Eelco de Groot
Sat Jan 11, 2020 9:15 am
Forum: Computer Chess Club: General Topics
Topic: Warm your engines
Replies: 7
Views: 1235

Re: Warm your engines

I still only have my old Athlon running so to compare I can try some very old programs, that are maybe more comparable to the programs playing in the game. Only 32 bit engines, because the operating system is 32 bit. I tried my Rebel 12 Betazoid personality and it finds 1. Bxh8, but at first with a ...
by Eelco de Groot
Thu Jan 02, 2020 11:32 pm
Forum: Computer Chess Club: General Topics
Topic: What depths do you get with theThreadripper?
Replies: 3
Views: 710

Re: What depths do you get with theThreadripper?

Thanks for looking into it Mike! You confirm more or less what I thought. The bench seemed good so that is a good start, and the hardware, cooling etc seem certainly up to the task. So if it is just a question of giving more hash, that is easy to do. At least for starters. I don't know if he has fou...
by Eelco de Groot
Thu Jan 02, 2020 7:33 pm
Forum: Computer Chess Club: General Topics
Topic: What depths do you get with theThreadripper?
Replies: 3
Views: 710

What depths do you get with theThreadripper?

In reference to a question on Fishcooking from Branko , with a new 3950X, I was wondering if the guys here with Threadrippers could maybe check if the depths are okay. The bench result that Branko reported with 32 threads is impressive, but I should he not get deeper with Stockfish even if it is onl...