Changelog for stockfish17-1.7.1-150600.4.pm.3.x86_64.rpm :

* Sun Apr 11 2010 packmanAATTlinks2linux.de - 1.7.1- updated to 1.7.1 (bugfix release)
* removed new and broken Hyper Threading detection code and fall back to well known 1.6.3 behaviour
* worked around issue in zugzwang positions where 1.7.0 failed to detect zugzwang. To avoid breaking compatibility with 1.7.0 issue was NOT fixed by default, but an UCI parameter called \"Zugzwang detection\" that is OFF by default was added- added \"Zugzwang detection = true\" to polyglot ini-file
* Thu Apr 08 2010 packmanAATTlinks2linux.de - 1.7.0- initial build, version 1.7.0