Excellent open source ML sparing partners for Chess and Go are available:
<a href="https://github.com/bencaddigan/esports-for-engineers" rel="nofollow">https://github.com/bencaddigan/esports-for-engineers</a><p>But what about Contract Bridge? Is there an open source program that will play the other three hands? A machine learning program would be ideal, but any decent open source program would be fine.