Difference between revisions of "Gerbil"
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'''Gerbil''',<br/> | '''Gerbil''',<br/> | ||
| − | an [[Open Source | + | an [[:Category:Open Source|open source chess engine]] under the [[Free Software Foundation#GPL|GNU General Public License]] <ref>[http://web.archive.org/web/20070607151211/www.brucemo.com/compchess/gerbil/index.htm Gerbil] by [[Bruce Moreland]] archived by the [https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine]</ref>, written by [[Bruce Moreland]], written for educational purposes. It has a decent search ([[Null Move Pruning|null move pruning]], [[Transposition Table|hash tables]]) but a rudimentary [[Evaluation|evaluation]] <ref>[http://web.archive.org/web/20070602233810/http://www.seanet.com/~brucemo/gerbil/release.txt Release Notes 02] archived by the [https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine]</ref>. |
=Features= | =Features= | ||
Revision as of 14:33, 26 June 2018
A Young Gerbil [1]
Gerbil,
an open source chess engine under the GNU General Public License [2], written by Bruce Moreland, written for educational purposes. It has a decent search (null move pruning, hash tables) but a rudimentary evaluation [3].
Contents
Features
Bruce on Gerbil [4]:
- It is using 0x88 move generation. The function is something under 200 lines long, which seems big, but there are a lot of comments and there's some repeated code.
- It is using vanilla windowed alpha-beta with no PVS or anything like that, and I plan to keep it this way, since that is clear and performs acceptably.
- It has a check extension. I think that is enough for now. I may try to do some pruning in the quiescence search, which uses MVV/LVA. I don't plan to write a static exchange evaluator.
- This is already a more or less fully functional winboard engine, an effort that consumed a whole bunch of time, not that Mann's standard is hard to write to. I just had to spend a lot of time messing with threads.
Legal derivatives
See also
Forum Posts
- Bruce Moreland's Gerbil by Ricardo Gibert, CCC, June 09, 2001
- Question about Gerbil by Artem Pyatakov, CCC, July 11, 2001
- Re: Ferret/Gerbil question by Bruce Moreland, CCC, September 21, 2001
External Links
Chess Engine
- Gerbil by Bruce Moreland archived by the Wayback Machine
Misc
References
- ↑ Gerbil from Wikipedia
- ↑ Gerbil by Bruce Moreland archived by the Wayback Machine
- ↑ Release Notes 02 archived by the Wayback Machine
- ↑ Re: Bruce Moreland's Gerbil by Bruce Moreland, CCC, June 09, 2001
