New engine releases & news H2 2024

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, chrisw, Rebel

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pohl4711
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Full name: Stefan Pohl

Re: New engine releases & news H2 2024

Post by pohl4711 »

Patricia 3.0 released (now with multithreading):
https://github.com/Adam-Kulju/Patricia/releases/tag/3.0

Learn more about the first EAS-Engine on my webiste:
https://www.sp-cc.de/patricia_eas_engine.htm

Patricia by Adam Kulju is the first engine besides Ed Schroeder's Rebel EAS, using my EAS-Tool (= Engine Aggressiveness Statistics Tool) to make the engine playing more aggressive:

"It's worth noting that Patricia is still well into superhuman territory, with an estimated CCRL elo of 3300-3350; she can put up a solid fight against top engines, and can crush any human or weak engine that dares to oppose her.
Patricia is, per the EAS tool, unquestionably the most aggressive superhuman chess engine ever created (and the most aggressive engine of any kind that I currently know of).
The metric that Patricia's aggression claims are based off of is Stefan Pohl's EAS-Tool, which is the most well known and well regarded tool for determining the aggressiveness of chess engines. It looks at a combination of factors, such as sacrifice rate, short win rate, and unnecessary draw rate, and outputs a score that captures how "exciting" an engine tends to play. A huge shoutout to Stefan Pohl. His EAS Tool works wonderfully, makes properly and objectively testing for increase aggression possible, and is the measure by which Patricia development progressed. He was also very invested in Patricia's development and explained many features of the EAS tool to me so that I had a better understanding of what was a sacrifice and what wasn't. He has put a lot of time into quantifying style, and I am happy to have Patricia be a proof-of concept and culmination of his ideas."

Code: Select all

                                 bad   avg.win
Rank  EAS-Score  sacs   shorts  draws  moves  Engine/player 
-------------------------------------------------------------------
   1    420310  56.62%  32.77%  03.74%   68   Patricia 3.0  
   2     67651  00.30%  26.61%  46.56%   67   Willow 4  
   3     59973  00.19%  23.70%  43.61%   67   Stormphrax 4  
   4     43925  00.70%  19.56%  46.58%   70   Carp 3.0.1  
   5     38241  00.38%  19.79%  46.36%   72   Akimbo 0.8  
   6     31291  00.10%  17.74%  42.20%   76   Alex 4  
   7     19634  00.44%  10.48%  41.59%   75   Altair 6  
   8     19046  01.04%  10.90%  41.09%   75   Viri 9  
-------------------------------------------------------------------
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Rebel
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Re: New engine releases & news H2 2024

Post by Rebel »

Brilliant
90% of coding is debugging, the other 10% is writing bugs.
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pohl4711
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Re: New engine releases & news H2 2024

Post by pohl4711 »

Rebel wrote: Sun Jul 14, 2024 10:37 amBrilliant
Definitly. My testrun suggests a huge Elo-gain (+120 Elo or more) over Patricia 2.0, but the testrun is only at 380 games right now.
But look at this game, my InterestingWinsSearch-Tool filtered out (3min+1sec, singlethread, balanced, 8 moves 2600+Elo human openings (Stockfish 16.1 says, after the first 8 moves, the position is completely equal (+0.10)):

[pgn]
[Event "Patricia 3.0 testing"]
[Site "?"]
[Date "2024.07.14"]
[Round "7"]
[White "Nirvanachess 2.4"]
[Black "Patricia 3.0"]
[Result "0-1"]
[ECO "C69"]
[Opening "Ruy Lopez"]
[Variation "Exchange Variation , Alapin gambit"]
[TimeControl "180+1"]
[Annotator "IWS-Tool: 5+ PawnUnits Sacrifice found in this game"]
[PlyCount "70"]
[GameDuration "00:05:06"]
[GameEndTime "2024-07-14T09:05:04.916 Mitteleuropäische Sommerzeit"]
[GameStartTime "2024-07-14T08:59:58.244 Mitteleuropäische Sommerzeit"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3 h5 7. d3 Qf6 8.
Nbd2 Ne7 9. b3 Ng6 10. Bb2 Bb4 11. c3 Bc5 12. d4 O-O-O 13. hxg4 hxg4 14.
Nh2 Rh4 15. g3 Rdh8 16. gxh4 Rxh4 17. Re1 Bd6 18. Nc4 Nf4 19. Nxg4 Qg5 20.
Ne3 f5 21. exf5 e4 22. c4 a5 23. d5 Kb8 24. f3 Rh3 25. Ng2 Rg3 26. Qc2 Bc5+
27. Re3 exf3 28. Qf2 Nh3+ 29. Kf1 Nxf2 30. Re8+ Ka7 31. N4e3 Rxg2 32. Ng4
Nxg4 33. Ra8+ Kxa8 34. Bd4 Bxd4 35. b4 Rg1# 0-1
[/pgn]

Patricia 3 sacs a full rook and a full bishop (=8 pawnunits (!!!)) and destroys Nirvanachess completely...and all with the black pieces. Nice!
jhonnold
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Re: New engine releases & news H2 2024

Post by jhonnold »

Graham Banks wrote: Fri Jul 12, 2024 9:28 am
Joseph wrote: Thu Jul 11, 2024 11:28 pm Do you happen to know if Koivisto, Igel Berserk is still active in development? I've been trying to find some information about them online, but I haven't had much luck.

Thanks!
I think that Koivisto is dead.
Jay has stated that there will be a new Berserk sometime this year.
Igel - no idea as I've not seen the author around for a while.
No I did not, and there is no plan to release Berserk 14 at any time.
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Graham Banks
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Re: New engine releases & news H2 2024

Post by Graham Banks »

jhonnold wrote: Wed Jul 17, 2024 3:39 am
Graham Banks wrote: Fri Jul 12, 2024 9:28 am
Joseph wrote: Thu Jul 11, 2024 11:28 pm Do you happen to know if Koivisto, Igel Berserk is still active in development? I've been trying to find some information about them online, but I haven't had much luck.

Thanks!
I think that Koivisto is dead.
Jay has stated that there will be a new Berserk sometime this year.
Igel - no idea as I've not seen the author around for a while.
No I did not, and there is no plan to release Berserk 14 at any time.
Okay.
That message must have been regarding Berserk 13 before it was released.
Apologies for the confusion.
gbanksnz at gmail.com
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Gabor Szots
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Re: New engine releases & news H2 2024

Post by Gabor Szots »

Gabor Szots
CCRL testing group
jgilchrist
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Re: New engine releases & news H2 2024

Post by jgilchrist »

Tcheran v2.5:

Code: Select all

Elo   | 56.13 +- 8.57 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 4108 W: 1828 L: 1170 D: 1110
Penta | [131, 284, 793, 488, 358]

Code: Select all

Elo   | 74.40 +- 17.43 (95%)
Conf  | 60.0+0.60s Threads=1 Hash=128MB
Games | N: 1024 W: 468 L: 252 D: 304
Penta | [23, 76, 174, 140, 99]
https://github.com/jgilchrist/tcheran/releases/tag/v2.5
https://github.com/jgilchrist/tcheran/b ... ELOG.md#25
Joseph
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Re: New engine releases & news H2 2024

Post by Joseph »

https://github.com/Witek902/Caissa

Caissa 1.20 is released
Kieren Pearson
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Re: New engine releases & news H2 2024

Post by Kieren Pearson »

nocturn9x
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Re: New engine releases & news H2 2024

Post by nocturn9x »

Hello there! Just came here to let people know about my engine, Heimdall :)

Git: https://git.nocturn9x.space/nocturn9x/heimdall

Supports both standard chess and Chess960 (dfrc works as well). Latest release is HCE, but I'm cooking up the NNUE version as we speak!

Note: the latest release has an issue (only in the windows binary) where it misreports its version as 0.3 instead of 0.4, sorry! I don't have a Windows machine on hand to correct this :(