Stockfish 14
For those of you with a little CPU time to spare, the fishtest project should be mentioned here.  Stockfish has a "CI" which self-plays all PRs before accepting them.  The client is easy to install.  Go get it!<p><a href="https://tests.stockfishchess.org/tests" rel="nofollow">https://tests.stockfishchess.org/tests</a><p><a href="https://github.com/glinscott/fishtest" rel="nofollow">https://github.com/glinscott/fishtest</a>