The open source clones of Alpha Go are my favorite AI sparring partners. There are several to choose from, and also several Go board applications.<p>My favorite open source Alpha Go clone is Katago <a href="https://github.com/lightvector/KataGo" rel="nofollow">https://github.com/lightvector/KataGo</a>.<p>There are several different open source Go board/sgf editor applications on which to run Katago; I use several.<p>KaTrain is my favorite: <a href="https://github.com/sanderland/katrain" rel="nofollow">https://github.com/sanderland/katrain</a><p>I also use sabaki: <a href="https://github.com/SabakiHQ/Sabaki/releases" rel="nofollow">https://github.com/SabakiHQ/Sabaki/releases</a><p>and q5Go: <a href="https://github.com/bernds/q5Go" rel="nofollow">https://github.com/bernds/q5Go</a><p>for batch review of Go games goreviewpartner is good: <a href="https://github.com/pnprog/goreviewpartner" rel="nofollow">https://github.com/pnprog/goreviewpartner</a>
For chess I like nibbler, which uses an open source version of Alpha Zero, Leela Chess Zero: <a href="https://github.com/fohristiwhirl/nibbler" rel="nofollow">https://github.com/fohristiwhirl/nibbler</a>