Since you’re here...

We hope you will consider supporting us today. We need your support to continue to exist, because good entries are more and more work time. Every reader contribution, however big or small, is so valuable. Support "Chess Engines Diary" even a small amount– and it only takes a minute. Thank you.
============================== My email: jotes@go2.pl



Chess engines: Peripheral 1.1.3



Peripheral  - UCI chess engine. I'm learning Rust and engine dev as I go, so any feedback is appreciated.
Rating estimate of version `1.0.0`: `~1960` CCRL blitz. Rating CEDR - there have been no tests yet.

Since no PEXT instructions are used yet, the binary should run on all Windows machines.

v.1.1.3:
Changelog
Added extended null move pruning.
UCI additions
position kiwipete
seldepth (furthest depth reached by Qsearch)
Visited nodes are now correctly counted (about 3x as many)
I have also tried NMP, and several common optimizations for NMP and NMR, but they did not gain against the basic null move reduction algorithm. It might be worth to retry these optimizations later, when the engine is hopefully stronger overall.

SPRT
Score of peripheral dev vs peripheral 1.0.0: 158 - 77 - 68  [0.634] 303
...      peripheral dev playing White: 81 - 38 - 33  [0.641] 152
...      peripheral dev playing Black: 77 - 39 - 35  [0.626] 151
...      White vs Black: 120 - 115 - 68  [0.508] 303
Elo difference: 95.2 +/- 35.5, LOS: 100.0 %, DrawRatio: 22.4 %
SPRT: llr 2.92 (100.9%), lbound -2.25, ubound 2.89 - H1 was accepted





Comments

Popular posts from this blog

New Strong Engines Test, by Chess Engines Diary, 2024.04.12

New chess opening book: M11.2 (bin and ctg)

New version chess engine: Lc0 BT4

Dragon NNUE by Komodo Chess - it's free!