Wednesday, February 8, 2012

Prédateur 2.2.1 "Bugfix" released

Because of constant pressure from Ruxy, Leo and Graham, and because the x32 version of Prédateur 2.2 was consistantly outplayed by Fernando Villega's Moron 1.0, I had no choice but to release this Prédateur 2.2.1 bugfix version.
I couldn't help but to temper with other things here and there, so its strength might be slightly different (more in the downside than in the upside).
(For some reasons, and because of the hurry, the Mac versions are a bit slow...)
Have fun with it and thank you all for your patience! :)

What changed:
  • fixed the ponder mode bug
  • fixed the time bug
  • x32 version works again
  • corrected a PST that mistakenly wasn't identical for both sides
  • a few tweaks here and there
  • Prédateur doesn't stop searching when it finds a mate anymore. That way it keeps searching while it still has time and maybe find a shorter one.
  • made all uci options lowercase (does CuteChess still protest?)
  • new binary added: MacOSX PPC

Wednesday, January 4, 2012

Prédateur 2.2 released

Since a little bit more than a year and a half, I've been working on a C++ "rewrite" of Prédateur. So this latest pascal version of my engine might well also be the last one, as the C++ version is getting mature and closer to delivery. This 2.2 version is most of all a speedup/bugfix release. Testers will tell, but I think the Elo boost might be bewteen +50/+100 compared with Prédateur 2.1.
The archives includes binaries for :
- win 32
- win 64
- Mac Intel
- MorphOS PPC

Here's what have changed:
  • A lot of speedup everywhere, made possible by using Intruments, XCode's code profiling tool.
  • The promotion "bug" is fixed, so Olivier and Leo should be happy, now ;)
  • Many ply-variables have been gathered into fieldbits, speeding up many parts of the engine.
  • The search has been polished and finely tuned.
  • Prédateur now understands the "go nodes xx" command.
  • Time management and response improved (Prédateur can now play games will less than 200ms per move).
  • perft is now available to everyone.
  • More binaries in the archive: MorphOS PPC added.
  • Many tidbits here and there I don't even remember.
Have fun, and happy new year 2012! :)