Search found 95 matches

by Ronald
Wed Jan 08, 2020 9:53 pm
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2020
Replies: 149
Views: 25770

Re: New engine releases 2020

Fine, thanks. Do you expect Pesto to overtake Rofchade once in the future? Are you going to work on both engines? (This one is for Ronald, of course.) This is more or less a "now and then experiment" to see how the AB search is performing as clean as possible. TCEC gave the opportunity to test it o...
by Ronald
Sun Jan 05, 2020 6:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: RMO - Randomized Move Order - yet another Lazy SMP derivate
Replies: 113
Views: 11577

Re: RMO - Randomized Move Order - yet another Lazy SMP derivate

I get different results with rofChade. rofChade is using different depths, but I modified it so that no thread exceeds the fixed depth. I ran a test for fixed depth 15, with 128Mb Hash. Score of 1 thread vs 2 threads: 39 - 123 - 338 [0.416] Elo difference: -58.93 +/- 17.03 Score of 1 thread vs 4 thr...
by Ronald
Fri Jan 03, 2020 10:35 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: RMO - Randomized Move Order - yet another Lazy SMP derivate
Replies: 113
Views: 11577

Re: RMO - Randomized Move Order - yet another Lazy SMP derivate

Occam's razor says that we should first look for the simplest possible explanation. And the simplest possible explanation is that Lazy has almost zero overhead. The overhead is so small, that (combined with a few primitive tricks to avoid that threads do too much double work) it wins against (some?...
by Ronald
Sat Dec 21, 2019 9:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Bug in my engine
Replies: 24
Views: 2006

Re: Bug in my engine

I took a quick look at the function isThreefold() and I saw that a true is returned after numrepeats >= 3. A threefold repetition is reached after 2 repetitions of a position however. It will probably not be the cause of the bug you are trying to solve, but I think it's not correct.
by Ronald
Fri Dec 20, 2019 4:02 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Bug in my engine
Replies: 24
Views: 2006

Re: Bug in my engine

Hi, I expect you get a "position startpos moves e2e4..." etc. from lichess with every new position. If you replay it afterwards with a "position fen" you don't have the positions that happened before the current position. If that is the case there might be a bug in your repetition detection, which w...
by Ronald
Tue Oct 29, 2019 10:19 am
Forum: Computer Chess Club: General Topics
Topic: CSVN tournament, 7 + 8 December!
Replies: 15
Views: 2599

Re: CSVN tournament, 7 + 8 December!

December 7/8, the 56th Programmer Tournament and 39th User Tournament will be held. This coincides with the ACTA tournament from Charles Roberson, maybe not so handy! Unfortunate that they are in the same weekend, but I prefer the "real" tournament, so I will be there! Looking forward to it.
by Ronald
Fri Sep 20, 2019 10:24 am
Forum: Computer Chess Club: General Topics
Topic: New release: rofChade 2.202
Replies: 2
Views: 713

New release: rofChade 2.202

This release is mainly a bugfix of release 2.2, it also contains a LMR tweak which will add around 10 elo. The bug: When the search was pondering or in infinite analysis mode, sometimes the search would return a "bestmove" prematurely. This is not correct and some GUI's can not cope with this bug an...
by Ronald
Fri Sep 20, 2019 9:01 am
Forum: Computer Chess Club: General Topics
Topic: RofChade and ponder
Replies: 17
Views: 2331

Re: RofChade and ponder

I really hope it's better than 2.0 :lol:

Version 2.202 also contains a LMR tweak which should be around 10 elo stronger than 2.2.
by Ronald
Thu Sep 19, 2019 3:35 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: SPCC: Testrun of rofChade 2.2 finished
Replies: 1
Views: 576

Re: SPCC: Testrun of rofChade 2.2 finished

Hi Stefan,

Very satisfying result for rofChade and thanks for testing!
by Ronald
Thu Sep 19, 2019 3:32 pm
Forum: Computer Chess Club: General Topics
Topic: RofChade and ponder
Replies: 17
Views: 2331

Re: RofChade and ponder

Hi Ronald, did you get crashes with the regular RofChade 2.2 @ Shredder Classic too ? Best wishes, G.S. (CEGT team) Hi Gerhard, I also got some crashes with version 2.2 so that is great... :lol: I also did another tournament with the bugfix version and this still didn't crash.So it seems the bugfix...