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Deja Vu

posted Aug 9, 2012, 6:40 AM by Mike Leany   [ updated Aug 10, 2012, 6:23 AM ]
It's been nearly two years since I released Vapor v0.01, and finally I found some time to work on my chess engine. So now I am releasing Vapor v0.02, "deja vu", but only for linux for now.
I added the ability to detect draws by repetition and by the 50-move rule, which cut draws nearly in half (avoiding many draws which should have been wins) and gave an improvement of roughly 35 Elo. I also added a transposition table, which gives an additional 160 Elo improvement for the default size of 256 MB. This gives a total improvement of roughly 195 Elo over Vapor v0.01.
Unfortunately I can only release a Linux version at this time, due to code which my Windows cross-compiler doesn't like. Once I rewrite that portion, I will release a version for Windows (even though you should really all be running Linux anyway).
Also, note that the Linux binary was built and tested on Ubuntu 10.10. I make no guarantee that it will run in your Linux distrubution, whatever that may be.
Yep, I said Ubuntu 10.10; stupid Unity!