Changelog for stockfish-9-2.1.x86_64.rpm :

* Mon Feb 05 2018 mvetterAATTsuse.com- Update to version 9
* Simplify away redundant SEE pruning condition
* Limit the king distance factor when evaluating passed pawns
* Simplify verification search
* Many other improvements
* Sun Nov 20 2016 rpmAATTfthiessen.de- Fixed architecture detection in spec file.
* Fri Nov 04 2016 mvetterAATTsuse.com- Update to version 8
* Mon Jun 13 2016 psimonsAATTsuse.com- Install license file as part of the documentation.
* Fri Jun 03 2016 psimonsAATTsuse.com- Drop Stockfish-CMakeLists.txt and stockfish-polyglot.ini. These files aren\'t necessary for building (or running) Stockfish.
* Thu Apr 28 2016 mvetterAATTsuse.com- Update to version 7- Added date.patch: Get rid of __DATE__
* Tue Sep 01 2015 mvetterAATTsuse.com- Initial package for version 6