Search found 161 matches

by nionita
Tue Dec 05, 2017 9:40 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: "Simplified ABDADA" updated
Replies: 7
Views: 2800

Re: "Simplified ABDADA" updated

I haven't tried LMR (I know, I know) but I suspect this isn't correct. What you could do is, as you're deferring the move, record the depth that you WOULD have searched the move at. Ok, I will have to try this. I was thinking that, when you defer a move, chances are high that when you come to searc...
by nionita
Fri Nov 24, 2017 2:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: "Simplified ABDADA" updated
Replies: 7
Views: 2800

Re: "Simplified ABDADA" updated

Hi Tom, Many thanks for the write up! I followed your ideas and implemented simplified ABDADA in Barbarossa (up to step 6, but without cutoff checks yet). I skipped some of the preparation steps which were meant basically to make sure the implementation is correct so far. In my own tests I got ~80 E...
by nionita
Tue Nov 07, 2017 9:26 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Functional programming
Replies: 4
Views: 1448

Re: Functional programming

You do not do assignments, you just name values. Like in mathematic.

But for a hash table you have the IO monad, where you can do what you want.

Still, the model is harder to implement in a mutable world (like the processors are), so the program is slower (see Barbarossa).
by nionita
Sun Oct 29, 2017 5:51 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney October
Replies: 54
Views: 7527

Re: On-line engine blitz tourney October

Anyway, I like this system and I believe that it is more stable than swiss, in the sense that the results are more reliable and less a matter of luck. Of course a bit randomness occurs in every game even between (almost) equal opponents, but still.
by nionita
Sat Oct 28, 2017 9:39 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Games of the on-line blitz tourney Oct 2017
Replies: 28
Views: 3649

Re: Games of the on-line blitz tourney Oct 2017

Barbarossa's games: [Event "ICS rated blitz match"] [Site "winboard.nl"] [Date "2017.10.28"] [Round "-"] [White "Winter"] [Black "Barbarossa"] [Result "0-1"] [WhiteElo "1485"] [BlackElo "1477"] [TimeControl "300+1"] [Annotator "2. +0.10 1... +0.07"] 1. d4 Nf6 {+0.07/14} 2. Nc3 {+0.10/...
by nionita
Sat Oct 28, 2017 8:43 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ten Years After
Replies: 14
Views: 3605

Re: Ten Years After

Many thanks to Mark and you, I have learned a lot from the wiki!
by nionita
Tue Sep 19, 2017 4:34 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney September
Replies: 48
Views: 8264

Re: Myrddin's games

Thanks! Here are Barbarossa games: [pgn] [Event "ICS rated blitz match"] [Site "winboard.nl"] [Date "2017.09.16"] [Round "-"] [White "Arminius"] [Black "Barbarossa"] [Result "1-0"] [WhiteElo "1873"] [BlackElo "1489"] [TimeControl "300+1"] [Annotator "9... -0.52"] 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc...
by nionita
Mon Sep 18, 2017 5:21 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney September
Replies: 48
Views: 8264

Re: Myrddin's games

Barbarossa had bad luck this time. How can I upload the pgn of the games?
by nionita
Sat Sep 16, 2017 5:02 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tt move vs null move
Replies: 21
Views: 5005

Re: tt move vs null move

Barbarossa does null move at d==1. I just made a branch to try this. But it will take days until I can see significant Elo results. I will report when I have them. Now the results are clear: doing null move for d >= 2 brings 9 Elo (after 52000 games) in Barbarossa. So doing null move also at d == 1...
by nionita
Sat Sep 16, 2017 7:55 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tt move vs null move
Replies: 21
Views: 5005

Re: tt move vs null move

nionita wrote:Barbarossa does null move at d==1. I just made a branch to try this. But it will take days until I can see significant Elo results. I will report when I have them.
Now the results are clear: doing null move for d >= 2 brings 9 Elo (after 52000 games) in Barbarossa.