New engine releases 2026 H2

[Carbec]

Zangdar 7

a lot of search improvements, new network, several hardening in the code.

https://github.com/Carbecq/Zangdar/releases/tag/v7

Estimated Elo gain?

Results of Zangdar-7 vs Zangdar-6.1.1 (10+0.1, 1t, 128MB, UHO_Lichess_4852_v1.epd):
Elo: 97.87 +/- 16.54, nElo: 177.66 +/- 28.47
LOS: 100.00 %, DrawRatio: 32.17 %, PairsRatio: 6.19
Games: 572, Wins: 237, Losses: 80, Draws: 255, Points: 364.5 (63.72 %)
Ptnml(0-2): [1, 26, 92, 149, 18], WL/DD Ratio: 1.30
LLR: 2.95 (100.3%) (-2.94, 2.94) [0.00, 5.00]

I don't think its so much ))

[Carbec]

Well, I have been told sprt is not the right thing to do, so there is :

Results of Zangdar-7 vs Zangdar-6.1.1 (10+0.1, 1t, 128MB, UHO_Lichess_4852_v1.epd):
Elo: 104.87 +/- 11.53, nElo: 208.10 +/- 21.53
LOS: 100.00 %, DrawRatio: 33.40 %, PairsRatio: 9.41
Games: 1000, Wins: 406, Losses: 113, Draws: 481, Points: 646.5 (64.65 %)
Ptnml(0-2): [1, 31, 167, 276, 25], WL/DD Ratio: 0.92

[Frank Quisinsky]

National Holiday in France!



Wrote this in the thread by Jim, Jim's compiles are also available!

THANK YOU!

Best
Frank

[pkrisz]

Renegade 1.3.1 - https://github.com/pkrisz99/Renegade/re ... tag/v1.3.1

This is a small bugfix release resolving a move generation and a hash corruption issue, which caused version 1.3.0 to actually get weaker as the hash size, time control or thread count increased. The difference should be fairly small for shorter time controls, but at TCEC this caused the engine to repeatedly blunder and resulted a major loss of strength.

[Carbec]

Zangdar 7

Not a release, but I made available binaries for Linux and ARM64, both static.

[Gabor Szots]

Shall I post something every week to keep this thread above the 2026 H1 one?

[DreamerExx]

Ember 1.2.0 will be released! The superiority over the previous version (which is ranked in 3000~ CCRL Elo) is 200 elo, but taking into account everything, I declare a power of about 3100 Elo CCRL https://github.com/ExxDreamerCode/Ember ... tag/V1.2.0

[Aleks Peshkov]

Petrel 4.0 released
https://github.com/AleksPeshkov/petrel/ ... s/tag/v4.0

I expect this version to be stable.
Major strength improvement (and 2.5x NPS drop) by increasing NNUE size (128->1024).

My raw expectation +100-120 Elo over petrel 3.5 (3436 Blitz / 3358 Rapid Elo).

Still no own Windows builds.

[Graham Banks]

https://github.com/matt-dot-net/dorky-release

[Elorejano]

Incredible news!!!
Nice to see this Winboard engine again!!