Search found 156 matches

by elpapa
Mon Feb 13, 2017 1:15 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Windows 10 slowdown after anniversary update
Replies: 2
Views: 940

Re: Windows 10 slowdown after anniversary update

Is it your engine only that is slower?

Have you tried other engines/benchmarks? Have you tried different versions of your own engine compiled before and after the Windows update? Or maybe a GCC update? What does the performance monitor show?
by elpapa
Wed Feb 01, 2017 1:47 pm
Forum: Computer Chess Club: General Topics
Topic: How to use Arena book?
Replies: 3
Views: 1122

Re: How to use Arena book?

You also have to tell each engine to actually use the book.

Engines->Manage->Details

Under the Books tab, check 'Use Arena main book with this engine'
by elpapa
Mon Dec 19, 2016 4:42 am
Forum: Computer Chess Club: General Topics
Topic: Abbess 2016
Replies: 10
Views: 2638

Re: Abbess 2016

1. Yes. 2. Yes, but I have the C++ runtime libraries installed. 3. I've only tested it in one very fast game (against my own engine, Wraith). Pretty wild stuff: [pgn] [Event "Computer chess game"] [Site "KELLY"] [Date "2016.12.19"] [Round "?"] [White "Wraith 0.91a"] [Black "Abbess2016"] [Result "1-0...
by elpapa
Mon Nov 21, 2016 1:35 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Code review , and what is the next step ?
Replies: 9
Views: 1285

Re: Code review , and what is the next step ?

But if you look at how he does iterative deepening, the "d-1" call is inside a loop over the moves. So we are not talking about q_search of the root: Yes, you're right. I missed that outer move loop. Probably because I don't to it that way myself. Edit: Too much code to go through, and maybe there'...
by elpapa
Mon Nov 21, 2016 12:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Code review , and what is the next step ?
Replies: 9
Views: 1285

Re: Code review , and what is the next step ?

///isn't it wrong to descend directly to qsearch at the first loop : d-1=0 Yes, it is. Well, maybe not technically wrong, but you're constantly searching 1 ply less than intended. auto Score = -AlphaBeta(-beta, -alpha, d - 1, true); Here's the actual line. It's like you want to search to a ...
by elpapa
Mon Nov 21, 2016 11:37 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Code review , and what is the next step ?
Replies: 9
Views: 1285

Re: Code review , and what is the next step ?

///isn't it wrong to descend directly to qsearch at the first loop : d-1=0 Yes, it is. Well, maybe not technically wrong, but you're constantly searching 1 ply less than intended. auto Score = -AlphaBeta(-beta, -alpha, d - 1, true); Here's the actual line. It's like you want to search to a ...
by elpapa
Fri Nov 18, 2016 6:14 pm
Forum: Computer Chess Club: General Topics
Topic: Fire 5 is out!
Replies: 120
Views: 178667

Re: What for a bullshit clone discussion!

Not knowing any Spanish (or Portuguese?), I put the phrase into google translate. It gave "Fool of the ass came out the clown" Google also said Did you mean: Tonto del culo salió el payaso (with an accent on the o of salió, incase you do not see this in your browser) That translated as "Silly ass c...
by elpapa
Fri Nov 18, 2016 2:51 pm
Forum: Computer Chess Club: General Topics
Topic: You make the call..
Replies: 32
Views: 5428

Re: You make the call..

I think rule 6.9 must be applied here. It's commonly agreed that 2 knights alone cannot force a mate. Hence the result must be draw. Even KNNK is not a draw under FIDE rules. Although it cannot be forced, two knights can deliver mate. And, like Graham said, it can sometimes be forced with other mat...
by elpapa
Fri Nov 18, 2016 1:25 pm
Forum: Computer Chess Club: General Topics
Topic: You make the call..
Replies: 32
Views: 5428

Re: You make the call..

Graham Banks wrote:Win to black, as it is still possible to mate with two knights with other material on the board.
Highly unlikely of course, but that's the official line.
This has got to be the correct answer. I voted black win as well.
by elpapa
Fri Nov 18, 2016 1:16 pm
Forum: Computer Chess Club: General Topics
Topic: A position almost every engine gets wrong
Replies: 16
Views: 1972

Re: A position almost every engine gets wrong

[d]3k4/K2Q4/8/8/8/8/8/8 b - - 0 1 There is no legal move... applicable FIDE rule :5.2b "The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal moves. The game is said to end in a ‘dead position’. This immediately ends the game...