Alexandria 0.9 - The first stable and practically playable release of Alexandria.
Alexandria 1.0 - First stable release of the Alexandria chess engine has a better Qsearch and a better LMR compared to the previous version, it also got around 100 ELO.
Alexandria 1.1 - Alexandria now has a resizable hash table and the release is now compiled with gcc (about 10 elo in total).
Alexandria 2.0 - This is the first release of Alexandria to have NNUE for the evaluation part, many thanks to Luecx who made this possible.
This version plays around 250-300 Elo stronger than Alexandria 1.1 and should sit comfortably around 2800 Elo, and libraries that weren't statically included were added to improve compatibility.
Score Alexandria-NNUE vs Alexandria: 129 - 3 - 68 [0.815]
... Alexandria-NNUE plays white: 67 - 1 - 32 [0.830] 100
... Alexandria-NNUE plays black: 62 - 2 - 36 [0.800] ] 100
... White vs Black: 69 - 63 - 68 [0.515] 200
Elo Difference: 257.6 +/- 41.3, LOS: 100.0%, DrawRatio: 34.0%
200 out of 200 games completed.
Alexandria 2.1- Default engine network changed to 768->256->1 structure, this is probably the last eval change for a while and gives around 60 elo so it's getting its own release, some looking for a change is coming up to use this new and better one assessment.
Score Alexandria-new against Alexandria-old: 264 - 105 - 631 [0.580]
... Alexandria-new plays with white: 149 - 45 - 306 [0.604] 500
... Alexandria-new plays with black: 115 - 60 - 325 [ 0.555] 500
... White vs Black: 209 - 160 - 631 [0.524] 1000
Elo Difference: 55.7 +/- 12.9, LOS: 100.0%, DrawRatio: 63.1%
1000 out of 1000 games completed .
Alexandria 2.2 - What has changed:
Most importantly, a bug in the detection of repetitions has been fixed, rfp has been introduced into the search and a small code cleaning has been done.
Overall, thanks to the bug fix and rfp, this version gets a staggering 60-80 Elo on its own compared to 2.1 and should get 30-40 Elo against other engines.
Code:
Score of Alexandria vs Alexandria-old: 96 - 28 - 176 [0.613]
... Alexandria playing White: 58 - 12 - 80 [0.653] 150
... Alexandria playing Black: 38 - 16 - 96 [0.573] 150
... White vs Black: 74 - 50 - 176 [0.540] 300
Elo difference: 80.1 +/- 24.9, LOS: 100.0 %, DrawRatio: 58.7 %
300 of 300 games finished.
Re: Different enginesWed May 25, 2022 11:27 am