CCRL Discussion Board

Apologies! The file should be available to anyone now.

ELO wise, about 100.

Thanks

Essentially it is Ceibo 0.9 , but have replaced the Evaluation with the tiniest of neural networks (768x128x1). The training data was created based on Ceibo 0.9 self play at 4k nodes only, for a total of 64MM unique samples. As for the trainer, I created several from scratch to train the net embedde...

Good to hear Graham !!
I'll be deleting the slower version then to avoid confusion.

Thanks!

Hi Graham, Should be about 100 Elo over previous version. Also, I have included 2 versions depending on available hardware. Can you try the recommended version first and if that fails, try the slower version? As i have made changes on the use of intrinsics, I am hoping the slower version won't be re...

Hi All,

Ceibo 0.9 is out! Thanks, Fede

Release Notes
Download link

Gabor Szots wrote: ↑Fri Sep 03, 2021 9:04 am Thanks Fede. As far as I know Sergio is already testing it.

Awesome! Thanks Gabor and Sergio

Could you explain what internal iterative reductions are? I've never heard of it on the wiki or in other engines. It's Ed's idea, as a alternative to Internal Iterative Deepening (IID). IID never worked for Ceibo, but IIR gave it a few Elo. Pls see his post in CC: http://talkchess.com/forum3/viewto...

Hi All, It has not been long ago since I released version 0.7, so normally I wouldn't release a new version so soon. However, while working on improving move ordering by applying static exchange evaluation on captures, I accidentaly found a Major bug related to moves from my Transposition Tables wor...

No worries Gabor!
Glad to hear you'll start testing it.

Thanks, Fede

Awesome. Thanks Graham.
I had just now edited my previous post to include that link

Hi Graham and team, It seems Ceibo 0.7 refused to work on the first match of D8. Lars's Xeon had no issue with it, but Dany reported a DLL issue due to a missing C++ Runtime library. If that's the reason why it didnt work, I have compiled a new version which removes that DLL dependency. Pls try this...

Hi all, I have just released a version 0.7 of Ceibo. Changes are as follows: Board Representation: Bitboards! (old school; no rotated/no magic) Movegen: completely reworked from scratch Evaluation: added king safety (my engine actually tries to protect the king ! how about that? ) added safe mobilit...

Thanks Gabor! Looking forward to the results.
Fede.

Hi all, This is to announce Ceibo 0.6. Changes since 0.5 are as follows: Late Move Reduction SMP * minor enhancements and code clean up * Up to 4 threads. Unfortunately I only have a 4 core CPU and therefore could not not test beyond that. However, I have not enforced a max tread count and should wo...

Oh no, not dead. It may have been M.I.A for a while, but very much alive.

Thanks, Fede

Hi everyone, It's been quite a while but i finally have a new stable version of Ceibo and would love to have it tested. Pls find below the link or download from the Ceibo site ( https://sites.google.com/site/ceibochess/downloads ) https://drive.google.com/file/d/1NDtBQSDTcGM3l7jP5Wd6ISCB0XI0QgTc Tha...

Ray wrote:

T-Poppins wrote:The Phenom II supports POPCNT but not AVX, which seems to confirm my hypothesis.

Yes, see my edited post.

What s confusing about this whole thing is that i don't use bitboards.

The exe in the original post does not work on my AMD Phenom II X6 either. That is, at the "Go" stage it crashes. And neither do the 3 exes above. The AVX one does execute and initially respond to the UCI command, but it should not execute at all, because the CPU has no AVX support. All of...

There's also the question of the latest v0.4.1 release. Should it be merged with v0.4 on our lists as a mere bug fix, or does it have enough changes to necessitate testing it as a separate version? If you think the differences may be worth at least 20 Elo we should be able to corroborate it. Versio...

Hi Tirsa, I use the ms compiler that comes with the Visual Studio 2015, and not a gnu compiler. Also, I compile it with pgo, so the compiler chooses the best optimization flags. That said, I still believe there may be some issue with that particular computer, as I don't use any special flags to targ...

Amazing!. Thanks a lot. As for the issue specifically with your Dual Xeon X5670, it makes me think that perhaps your windows might be corrupted. Perhaps a fresh install could fix it. In any case, I ll be sure to have the other issues you mentioned fixed by my next release. Thanks again, and looking ...

ok, here is a stretch... have you installed service pack 1 on your win 7 ?

Hi Tirsa, Thanks for taking the time to test Ceibo. In regards to the issues: #1. Seems quite odd. It would appear it crashes between calculating the amount of time to allocate to that move and right before the main search function is triggered. I cant seem to find anything that could cause that exc...

Thank you ! :) Some games more (opponents rated between 2000-2050): Ceibo 0.4 64-bit : 228 (+ 89,= 47,- 92), 49.3 % Oberon 0.04 : 39 (+ 17,= 5,- 17), 50.0 % Freyr 1.068 64-bit : 38 (+ 17,= 8,- 13), 55.3 % Zeta Dva 0303 64-bit : 39 (+ 12,= 13,- 14), 47.4 % Bestia 0.90 : 39 (+ 17,= 7,- 15), 52.6 % Bo...

Thank you !