Search found 658 matches

by Edmund
Sat Jul 30, 2016 1:19 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening book from a statistical point of view
Replies: 23
Views: 3406

Re: Opening book from a statistical point of view.

stegemma wrote:I use { +2, +1, 0 } and even this could be something to think about. If we want to award the winning moves, we could use { +3 +1 0 }, for sample but this is another story.
Could you maybe report win/draw/losses separately so that I can run my model to replicate results?
by Edmund
Sat Jul 30, 2016 11:10 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening book from a statistical point of view
Replies: 23
Views: 3406

Re: Opening book from a statistical point of view.

Hello again: Folkert's post refers to what I already wrote. Edmund's solution looks more difficult at first glance but it can be given a go eventually. One advantage of my proposal is that you can take into account the relative strength of the players. I.e. if a weaker player manages to win with a ...
by Edmund
Mon Feb 29, 2016 7:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Statistical assessment of chess opening book moves
Replies: 3
Views: 1448

Re: Statistical assessment of chess opening book moves

I have seen many examples where the score (at least from a reasonable-length search) does not predict the winning chances for a move. In correspondence play especially it is common to see moves that don't look at all good initially but some moves later show a different eval. These are players that ...
by Edmund
Sat Feb 27, 2016 4:42 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Statistical assessment of chess opening book moves
Replies: 3
Views: 1448

Statistical assessment of chess opening book moves

Usually opening books provide for each move per position simple information such as frequency, average score, draw rate, average elo and maximum elo. Comparing moves provided this information is difficult if not impossible. I propose a statistical method to (a) estimate the quality of each move, (b)...
by Edmund
Sun Aug 02, 2015 12:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 3D XPoint
Replies: 5
Views: 1171

3D XPoint

The announcement of 3D XPoint technology by Intel-Micron last week ( http://www.anandtech.com/show/9470/intel-and-micron-announce-3d-xpoint-nonvolatile-memory-technology-1000x-higher-performance-endurance-than-nand ) seems to be very interesting for chess engine developers and users. It is a storage...
by Edmund
Mon Jul 13, 2015 1:38 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: nalimov database for 3, 4 and 5 in FEN format
Replies: 10
Views: 1423

Re: nalimov database for 3, 4 and 5 in FEN format

This will give you an idea: http://kirill-kryukov.com/chess/nulp/results.html For one, Nalimov is a specific binary format, so this is the same thing as asking for a Windows .exe file in English ascii. As converting them to FEN would blow them up end-game tables in general by a factor 1000 or so, I ...
by Edmund
Sat Dec 20, 2014 9:38 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: How does input console for UCI work ?
Replies: 16
Views: 3066

Re: How does input console for UCI work ?

Also no idea about Robbolito. I agree with HGM on the non blocking input checking part. See for example: https://chessprogramming.wikispaces.com/CPW-Engine_com On another note, there is also the command CreateThread to start a thread: WINBASEAPI __out_opt HANDLE WINAPI CreateThread( __in_opt LPSECUR...
by Edmund
Fri Nov 28, 2014 8:18 am
Forum: Computer Chess Club: General Topics
Topic: Draw position bishop+g3 pawn vs g2 pawn
Replies: 11
Views: 1406

Re: Draw position bishop+g3 pawn vs g2 pawn

After all this is still a 7 men endgame. What assumptions would you make to be able to solve this endgame in just a couple of seconds? Fix all pawns in place (don't move them, they get taken immediately anyway). Mark as won any position where black can play Kxg2. Recursively mark all precursors as ...
by Edmund
Thu Nov 27, 2014 9:17 pm
Forum: Computer Chess Club: General Topics
Topic: Draw position bishop+g3 pawn vs g2 pawn
Replies: 11
Views: 1406

Re: Draw position bishop+g3 pawn vs g2 pawn

hgm wrote:Solving this KBK+Pawns end-game by retrograde analysis would just take a couple of seconds. So it seems silly to think 40 minutes about it in the first place.
After all this is still a 7 men endgame.
What assumptions would you make to be able to solve this endgame in just a couple of seconds?