Search found 2168 matches

by cdani
Thu May 01, 2014 6:00 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 46th Amateur Series Division 4
Replies: 19
Views: 1604

Re: Final Standings

Thanks again for running it!!

I must improve a lot Andscacs to not doing badly in Division 3.
When it will start?
by cdani
Mon Apr 28, 2014 7:28 pm
Forum: Computer Chess Club: General Topics
Topic: Which engine searches deepest?
Replies: 33
Views: 5300

Re: Which engine searches deepest?

Hello. Forgive my audacity. In my understanding, the capacity of go deepest of Stockfish is mainly related to the evaluation, a part of the move ordering. I have seen some times that my engine is unable to find a tactical trick, and then is able to find it fast when I add some knowledge, for example...
by cdani
Sun Apr 27, 2014 2:42 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CountryChess 03: stage 2
Replies: 30
Views: 4922

Re: 3rd qualifying round: participants

Nice and strong tournament :-)
by cdani
Fri Apr 25, 2014 11:50 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Andscacs 0.62w 64-bit Gauntlet for CCRL 40/40
Replies: 1
Views: 272

Re: Andscacs 0.62w 64-bit Gauntlet for CCRL 40/40

Thanks!!
It's incredible all this work you do :-)
by cdani
Fri Apr 25, 2014 11:29 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What's the trick ?
Replies: 25
Views: 5181

Re: What's the trick ?

We have two truths. The one of that serious testing is impossible without tens of thousands of games, and the one that worked, not only for me, to push the engine from 1700 elo to +2600 in some months, may be letting one computer work many nights but doing less than 3000 games. I want to believe tha...
by cdani
Thu Apr 24, 2014 9:47 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What's the trick ?
Replies: 25
Views: 5181

Re: What's the trick ?

Dangerous thinking. With a few hundred games, the error bar is very large. You will make mistakes by thinking a change is good when it is not, or thinking it is bad when it is not. There is no substitute for enough games to get the error bar down to something that lies well inside the expected gain...
by cdani
Thu Apr 24, 2014 9:42 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What use are test games?
Replies: 3
Views: 1080

Re: What use are test games?

I suppose it depends of what is your objective, to beat humans or engines.

I understand this game it's not well developed, if not the best humans will know which are the weaknesses of the apparently stronger engine and beat it.
by cdani
Thu Apr 24, 2014 5:54 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What's the trick ?
Replies: 25
Views: 5181

Re: What's the trick ?

If it is true that you need to cross a certain threshold of inherent depth before aggressive reductions and pruning starts to work then you get a testing problem. For you can only test it using large time controls, which means it costs many days or weeks of computing time. I cannot afford that. And...
by cdani
Thu Apr 24, 2014 6:25 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What's the trick ?
Replies: 25
Views: 5181

Re: What's the trick ?

I believe there is (a) too little, (b) too much, and (c) quite a few choices for "just right". Sorry, I don't understand. The idea I want to explain, more elaborated, is that you must win enough depth with the reductions / large R / forward pruning to win more strength that the one you lose because...
by cdani
Wed Apr 23, 2014 10:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: What's the trick ?
Replies: 25
Views: 5181

Re: What's the trick ?

Heavy duty reductions. Large R in null-move searches Heavy duty forward pruning. I have the idea that when you start pruning you lose strength. But if you continue pruning heavier, it arrives a moment when you start to win strength. Is like you cross some line. Of course it's not that easy because ...