CCRL Discussion Board

I have created the 16 missing Nalimov tablebases for 33p endings by conversion from Johan de Koning's FEG data. The total compressed size is about 130GB, with kqpkrb being the largest at about 17GB, and kppkpp the smallest at about 1 GB. The original FEG data is about 90 GB, smaller partially becau...

I have created the 16 missing Nalimov tablebases for 33p endings by conversion from Johan de Koning's FEG data. I was reading this page: http://www.aarontay.per.sg/Winboard/egtb.html#chessmasteredgb It mentions that the Koning egtb only stores wins from the white point of view. Will this effect the...

In retrospect, to make things run even smoother. I can setup a hidden area on my site for people in this forum download. That way I can get the files to other key distributors before releasing it to the public. What do you all think? This would take some strain off my server by allowing it to be mor...

I have created the 16 missing Nalimov tablebases for `3.8 Ghz machine, but the other endings will run a lot faster. I have decided to run verification on all the endings to minimize the chances of repeated file exchanges. All the verifications were successful. Attached are the .tbs and md5sums for ...

Greetings,

It seems all of my problems have been due to a messed up g++ install. I was able to compile it on another machine here.

I've tried the examples, but I still get "Illegal tablebase name: 0s"
Anyone have an example command-line? Would like to start 5-1 egtb's

-Josh

Dear Guido, please do not take my first timings very seriously. They were obtained with a compilation of the TB generator which was quite inefficient. I had not used any "optimization" and the executable included a lot of unneeded debug information. The later compilations are faster by ab...

Hi Mark, Super job nice work! Listen when do you expect these 16 TB's to be verified for correctness? I have been studying the data from the TBS files and am very much interested in the results of the TBS files and not the actual tablebases. I guess until all 16 of these files are verified for corr...

Kirill Kryukov wrote:I can provide any of already shared 33p sets. I have all except two of them currently, the last two are downloading right now, should finish in less than a week. If Josh will do verification, I can set up an FTP to provide him with all necessary sets.

Sounds good to me

-Josh

I have created the 16 missing Nalimov tablebases for 33p endings by conversion from Johan de Koning's FEG data. The total compressed size is about 130GB, with kqpkrb being the largest at about 17GB, and kppkpp the smallest at about 1 GB. The original FEG data is about 90 GB, smaller partially becau...

Excellent news, thank you very much, Marc! I'd suggest to send it to Joshua Shriver, as he lives in US (AFAIK), and he has good connection, and because I know he will share the files online. (And he also volanteered in another thread). Aye :) I live in Ohio. What are the prereq sets for verificatio...

Hi Marc, Josh, did I understand correctly that you have also generated kqpkrn already? I will let my computer finish the calculation anyway because I would like to compare the result. The source code of tbgen I compiled using g++ and -O3 is attached. I did nothing but eliminate the error messages, ...

Hi Marc, presently I am computing kqpkrn. I am using Nalimov's program. My computer is now doing the 9th iteration, with 63 still to go. The speed is currently a little below 1 iteration per day. After that I had planned to do kqpkrb. Do you think it is worthwhile to do this? Or are their better wa...

Kirill Kryukov wrote:Hi Marc, Martin! It is great what you are doing, please keep it on! About distribution, I suggest using FTP to upload new files to 2 or 3 volanteers, who will then share them with eMule. I will be glad to help with this.

I'd also be willing to host them as well http and amule

-Josh

TapaniS, Josh, do you mind if I add links to your sites to the EGTB Online project page? :-) And thanks for the great work you are doing! I dont mind if you link to olympuschess, I'd feel honored :) Sadly I haven't been able to update it lately, just finished an 18 hour work day and have to do anot...

TapaniS wrote:TableWell is temporarily out of date (they changed a server for it and hope to get better performance with this new one).

I hope to get all clear again as soon as possible.

Best regards,
TapaniS

Keep up the great work

-Josh

I've had 2-3 people request I put some older files back online to complete their sets. If you are one of these people, please send me a priv email to jshriver <at> gmail.com and I'll try to get it done hopefully this weekend.

-Josh

Does anyone know if there is a tree or document describing the requirements of each egtbs against others? I might be wrong, but I thought some required subset egtbs to work properly. So knowing what require what would be nice.
But maybe that's just for generation and not for general use.

-Josh

Hi all. After half a year of sharing we still have less than 50 people participating. Very few new people are joining. Where are all thousands of chess players, why they don't want to improve their endgame analysis by perfect chess knowledge? Is it something to do with the huge hard drive storage r...

I read a while back, where a post analysis done by a GM used the 6men egtb to find a flaw in the his or his opponent's endgame. If I find the article I'll post it, since the game pgn would be a good example.

-Josh

Hi all, also the endgame knnnkr computed under 64 bit linux has a correct md5 hash value. Greetings, Martin Kreuzer Hi I tried sending you an email threw this forum, but it seems to have been mailed to me. So not sure if you received it or not or if the email I received was just a carbon copy. My e...

Martin Kreuzer wrote:Hi all,

also the endgame knnnkr computed under 64 bit linux
has a correct md5 hash value.

Greetings,
Martin Kreuzer

Wonderful Can you try building the remaining 13-16 files that Nalimov hasn't released?

-Josh

Pls may you record execution time and memory used for each 6-men TB generated by you (and the PC you use)? I'm the author of another TBs generator (see the thread "Semi-new egtb format") and in this time I'm generating 6-men TBs, so these data can be very ineteresting for me. Moreover I c...

Sounds like a great deal. I'd grab it if I had the money. Hopefully someone else here is up for it

-Josh

Hi all, after fiddling with the code a bit, my student and I have been able to compile it using g++ under linux. The file tbdecode.h from the crafty souces needs to be renamed tbdecode.c There were a number of further compiler error messages due to the difference between g++ and the ms compiler Eug...

Arpad Rusz wrote:I think I have the source code of the version of tbgen to create 6 men tablebases! I downloaded from Crafty's site two years ago. I have put it on emule (tbgen.zip).

What's the hash for this file?
-Josh