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



New version chess engine: Molybdenum 4.0

 


New chess engine: Molybdenum 3.0
Author:rn5f107s2

v.4.0:
This release features an Elo gain of around 35:

STC:
Elo   | 61.08 +- 16.03 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=8MB
Games | N: 1000 W: 359 L: 185 D: 456
Penta | [5, 74, 198, 188, 35]
https://aytchell.eu.pythonanywhere.com/test/492/

LTC:
Elo   | 36.62 +- 15.11 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=64MB
Games | N: 1000 W: 297 L: 192 D: 511
Penta | [2, 77, 252, 152, 17]
https://aytchell.eu.pythonanywhere.com/test/490/
Elo gains:
Search Improvements:
Dont extend all moves when singular extending: #81
Better killer handling at root: #82
Research lmr fail highs: #85
Do deeper but worse: #89
NNUE improvements:

Train on an additional 100m fens: #80
Net trained on 0.5 wdl: #84
This release also features a few non functional speedups and the Introduction of Lazy SMP (#93), meaning Molybdenum can now be run with more than one thread.

The provided binaries use avx2, bmi2... (v3) / sse3, popcnt.. (v2) optimization respectively. The avx2bmi2 binary is faster so it should be preferred if your CPU supports these instructions sets. Note that even ryzens before zen 3 should be able to use the bmi2 binaries without slowdown, as they contain no pext / pdep instructions


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!