Search found 3256 matches

by Sven
Sat Jul 06, 2019 4:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: backward pawn
Replies: 5
Views: 321

Re: backward pawn

In my view f5 and h5 are not backward but g7 is. My reason: the statement "the backward pawn is not able to push forward without being lost" (https://www.chessprogramming.org/Backward_Pawn) is not applicable if the stop square is occupied. However, available definitions vary a lot. CPW points to som...
by Sven
Thu Jul 04, 2019 8:07 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Severe windows 10 problems. What to do?
Replies: 49
Views: 1397

Re: Severe windows 10 problems. What to do?

Henk wrote:
Thu Jul 04, 2019 6:20 am
Maybe I should try second option: Create Windows 10 installation media
But therefore I first have to buy USB with at least 8 GB. My current USB sticks only have 4GB.
A 32 GB USB stick should be available for much less than 10 EUR. So not much of a "but" ...
by Sven
Wed Jul 03, 2019 10:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Severe windows 10 problems. What to do?
Replies: 49
Views: 1397

Re: Severe windows 10 problems. What to do?

For instance starting explore.exe from a cmd does not work. For it says can't find explore.exe. But if I go to c:windows32 I see an explore.exe. But cannot execute it somehow. So what to do instead of buying a new computer for that is an expensive solution. And maybe I will get these problems in th...
by Sven
Thu Jun 27, 2019 8:31 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tuning for the uninformed
Replies: 64
Views: 13092

Re: tuning for the uninformed

Eval value is always as white POV. That is different from what Sven says? No, why? I said "same viewpoint" and if the stored value is from white POV then eval must be white POV, too. My example was more general and did not assume white POV, it was only made to show what would happen on a viewpoint ...
by Sven
Wed Jun 26, 2019 4:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: tuning for the uninformed
Replies: 64
Views: 13092

Re: tuning for the uninformed

Something I forgot to ask: for totalError += pow(value_from_fen - calculateSigmoid(eval_score), 2); value_from_fen = 1.0 for 1-0, 0.0 for 0-1 and so on but eval_score, should it be from the point of view of the fen-string? or from white? or...? Obviously the sigmoid function (and therefore also eva...
by Sven
Mon Jun 24, 2019 7:20 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL scaling versus human player
Replies: 24
Views: 1425

Re: CCRL scaling versus human player

Here is the top endgame player of all time Carlsen blundering a 5 pieces endgame ==> https://www.youtube.com/watch?v=5b-1u5XjaFU This is OT of course but in the video I only see KRBPPP vs KRBPPP positions, that is 12 pieces. What did I miss? You missed the moment when Carlsen blundered which was at...
by Sven
Mon Jun 24, 2019 7:02 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 74th Amateur Series Division 7
Replies: 13
Views: 704

Re: 74th Amateur Series Division 7

Congratulations to David (Orion author) on the tournament victory and promotion into Division 6 of the next series. :) Congrats to David from me as well :-) The outcome was very close in the end, Jumbo almost made it ... Thanks to all who took an interest in this tournament. It was nice seeing some...
by Sven
Sun Jun 23, 2019 8:08 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL scaling versus human player
Replies: 24
Views: 1425

Re: CCRL scaling versus human player

Chessqueen wrote:
Sun Jun 23, 2019 6:09 pm
Here is the top endgame player of all time Carlsen blundering a 5 pieces endgame ==> https://www.youtube.com/watch?v=5b-1u5XjaFU
This is OT of course but in the video I only see KRBPPP vs KRBPPP positions, that is 12 pieces. What did I miss?
by Sven
Thu Jun 20, 2019 9:09 pm
Forum: Computer Chess Club: General Topics
Topic: Who does chess programming wiki?
Replies: 6
Views: 590

Re: Who does chess programming wiki?

I recently in a search of Pulsar chess in google noticed chess programming wiki has a pulsar page, https://www.chessprogramming.org/Pulsar Who does this site? this Norbert's site? One of the main contributors of the CPW site is Gerd Isenberg. You can click on "View history" for each single page to ...
by Sven
Thu Jun 20, 2019 8:49 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: DTM50
Replies: 65
Views: 6237

Re: DTM50

Sven: i talked with noobpawnftw and he said: distance to mate and rule 50 are contradicting things, they don't work together. You reach a position with rule counter = 49 for example, apply dtm50(which assumes rule counter = 50) gives you imperfect moves. So basically you need DTM1~DTM50 to play per...