Fabien Letouzey has just released Senpai 2.0. This is mostly a complete rewrite. He’s made extensive changes and added automated tuning of evaluation parameters. You can find out more on the Senpai page.
I’m excited to let everyone know about two new engines which are to be hosted on this blog.
The first engine is Fruit Reloaded. This is fork of Fabien Letouzey’s Fruit 2.1. Most of the new development (including SMP search) has been done by Daniel Mehrmann and Ryan Benitez. You can find out more here:
The second, engine is a big surprise. Fabien himself has been dabbling once again in chess programming. He’s come up with a brand new engine – Senpai! It’s a bitboard engine (Fruit was array based) with SMP search. I ran some quick tests on a beta version and Senpai 1.0 drew a 150 game match against Chiron 2.0. Although this is a small sample of only one engine, it implies a rating of approximately 3100 ELO on the CCRL scale. You can find out more about Senpai here:
Let the fun begin!