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Hello all,

new version Atlas 3.80 available at https://sites.google.com/site/atlaschess/home/down.

In this version I made a general re-testing, rewriting many parts. A short summary:
- Enable hash qsearch
- Only check extension
- Aspiration: not symmetrical window
- IID improvement
- Bad direct checks in qsearch now pruned
- Bad quiets moves now decreasing heuristic history
- General re-testing parameters in eval function
- Modification of king safety
- Added safe checks in king safety
- Improving mobility: linear to non-linear
- General bug correction: many in eval, ordering, ...

I am now rewriting specific endings code and testing the pondering (not enabled yet, next versions).

My test at fast control shows 30-40 elo gain in self testing, but it could be different at long time controls as usual.

Regards,

Andrés Manzanares.
https://sites.google.com/site/atlaschess/

Manza wrote:Hello all,

new version Atlas 3.80 available at https://sites.google.com/site/atlaschess/home/down.

Excellent news!

Hi Andres,

yes, good NEWS Graham.
Tested Atlas 3.70em x64 in my Qualification-2014 tourney and have a lot of fun with.

I added the engine update in my ToDo Calendar!
http://www.amateurschach.de/main/_engines.htm

Thanks to the Spanish programmer!

Best
Frank

Felicidades por la nueva versión!
Congratulations on the new version!

Gracias Andres !