Difference between revisions of "Gerbil"
GerdIsenberg (talk | contribs) (Created page with "'''Home * Engines * Gerbil''' [[FILE:A young gerbil.jpg|border|right|thumb| A Young Gerbil <ref>[https://en.wikipedia.org/wiki/Gerbil Gerbil from Wikipedia]...") |
GerdIsenberg (talk | contribs) |
||
Line 41: | Line 41: | ||
'''[[Engines|Up one Level]]''' | '''[[Engines|Up one Level]]''' | ||
[[Category:Engine]] | [[Category:Engine]] | ||
− | [[Category: | + | [[Category:Open Source]] |
[[Category:GPL]] | [[Category:GPL]] | ||
[[Category:Mammal]] | [[Category:Mammal]] |
Revision as of 22:07, 18 June 2018
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