Two New Engines Hosted on

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!

  • Michael Byrne

    Hi Steve – a little bit late to the party, but I just downloaded Senpai last night and that’s an amazing program. With just 7000 lines of code, Fabian has created an extraordinary chess engine. And with everything in one file, it was extraordinary simple to get a highly optimized exe. It’s now in my stable of engines that I run off the Apple iMac 5K Retina. Would be happy to share the executable I created. It may only run on recent Macs that have the Haswell processors – not sure. It’s without a doubt that Senpai has huge upside potential Looking forward to any new releases.

    Please pass on to Fabien my very best regards,

    Michael Byrne – assistant programmer for Crafty ( assisting Bob Hyatt )

    • Steve Maughan

      Hi Michael – Senpai is really quite amazing. Compact, highly original and super strong! If you send me the executable I’ll include it on the site.

      – Steve