Hello,
The new version 0.4.0 of Little Wing, a bitboard chess engine written in Rust, is out!
It should play better chess now, going up in strength from 1650 ELO to around 2000.
There's still a lot of work to do on the evaluation side but I'm happy with the search side for now.
Added
- Add library with public API and documentation
- Add getopt to parse program options
- Add readline to user interface
- Add piece square tables to evaluation
- Add upper and lower bounds in transposition table
- Add age field in transposition table
- Add delta pruning to quiescence search
- Add transposition table to quiescence search
- Add basic UCI support
- Add very basic parallel search in threads with shared transposition table
Changed
- Improve CLI
- Improve statistics debug output
- Refactor many parts of the code
- Allow NMP, IID, and LMR at shallower depth
- Set NMP R to 3
Links
https://github.com/vinc/littlewing
https://vinc.cc/binaries/littlewing/lit ... 4.0.tar.gz
https://vinc.cc/binaries/littlewing/sha1sums.txt
https://docs.rs/littlewing/0.4.0/littlewing/
Little Wing v0.4.0
Moderators: hgm, Rebel, chrisw
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- Posts: 33
- Joined: Tue Jan 19, 2010 8:38 am
- Location: Brittany, France
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- Posts: 33
- Joined: Tue Jan 19, 2010 8:38 am
- Location: Brittany, France
Re: Little Wing v0.4.0
Thanks! I'm anxious to see how this version will do on CCRL, my own tests are always a bit optimistic.SzG wrote:Vincent,
You must be joking. 350 Elo progress? That's huge!
Keep up the good work.
Code: Select all
$ cutechess-cli -engine cmd=littlewing-v0.3.0-136-g22c7fed proto=xboard -engine cmd=sjaakii proto=xboard -engine cmd=sayuri proto=uci -engine cmd=cinnamon-2.0 proto=uci -engine cmd=dorpsgek proto=xboard -engine cmd=plp proto=uci -engine cmd=napoleon proto=uci -engine cmd=rattatechess proto=xboard -each tc=40/60 option.Threads=1 option.Hash=64 option.smp=1 option.memory=64 -openings file=2moves.pgn -repeat -rounds 10000 -recover -wait 10 -concurrency 7 -pgnout 40-60-games.pgn 2>/dev/null
Code: Select all
$ echo -e "prompt off\nreadpgn 40-60-games.pgn\nelo\nmm\noffset 2200 RattateChess 1.0 Nosferatu\nratings\n" | bayeselo
Code: Select all
19197 game(s) loaded, 5 game(s) with unknown result ignored.
00:00:00,00
Rank Name Elo + - games score oppo. draws
1 Dorpsgek Dillinger 1 2257 10 10 4800 72% 2066 12%
2 RattateChess 1.0 Nosferatu 2200 9 9 4799 65% 2074 13%
3 Sjaak II 1.4.1 2183 9 9 4799 63% 2077 15%
4 Napoleon 2115 9 9 4800 53% 2086 14%
5 Little Wing v0.3.0-136-g22c7fed 2054 9 9 4799 45% 2095 14%
6 Poor little Pinkus 2039 9 9 4799 43% 2097 11%
7 Cinnamon 2.0 2027 9 9 4798 41% 2099 14%
8 Sayuri 2017.09.29 1844 11 11 4800 19% 2125 9%