And with extra strength: 100 Elo stronger than its predecessor!
SmallBrain is a free open source chess engine under the GNU GPL 3.0 license.
Despite its name, this chess engine has quite a large and sophisticated "chess brain" :)
It can't be otherwise, since...
...SmallBran 7.0 is playing at over 3400 Elo
Source: MCERL (ongoing)
Here's what its author with the nickname Disservin, wrote about the seventh edition of his engine:
I am happy to release version 7 of Smallbrain!
As always the codebase is constantly evolving and many areas have been rewritten and cleaned up. I've also added the support of FRC/DFRC and an earlier FRC version is already on place 20 CCRL FRC! DFRC data has been included in the latest net as well.
Its becoming quite the bigbrain lately ; )
Lately, SmallBrain has been one of my most used chess engines.
I invite you to download SmallBrain 7.0, it's really worth it :)
Android – Compiled by Archimedes
Linux ARM64 & Intel – Compiled by Darius
Mac Apple Silicon & Intel – Compiled by Darius
Windows – Compiled by Darius
In the Files area you will find free chess engines for download.