New engine: Caissa

[Witek902]

Btw, I just noticed that both 40/15 and Blitz were run on single thread, am I right? Caissa supports multithreading.

[Gabor Szots]

Btw, I just noticed that both 40/15 and Blitz were run on single thread, am I right? Caissa supports multithreading.

It is probably due to limited resources. For me surely.

[Graham Banks]

Btw, I just noticed that both 40/15 and Blitz were run on single thread, am I right? Caissa supports multithreading.

In my 4CPU waiting list for 40/15.

The 4CPU list for 40/15 is here:
https://www.computerchess.org.uk/ccrl/4 ... ons_only=1

[Graham Banks]

4CPU Gauntlet underway in 16061.

[Witek902]

Caissa 1.5 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.5

Around +50Elo in regular chess and +70Elo in FRC in 8+0.08 time controls. Around +100Elo gain when running on 4 threads in short time controls.

Biggest changes:
* new neural networks (with changed architecture) trained on more positions
* multi-threading optimizations
* neural network evaluation optimizations

[Gabor Szots]

Nice improvement, Michal. Keep up the good work.

[bastiball]

Caissa 1.5 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.5

Around +50Elo in regular chess and +70Elo in FRC in 8+0.08 time controls. Around +100Elo gain when running on 4 threads in short time controls.

Biggest changes:
* new neural networks (with changed architecture) trained on more positions
* multi-threading optimizations
* neural network evaluation optimizations

Wow, developing so fast

[Witek902]

Caissa 1.6 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.6

~40 Elo improvement compared to version 1.5

[Witek902]

I released a minor version that fixes blunders in longer time controls:
https://github.com/Witek902/Caissa/releases/tag/1.6.3

[Graham Banks]

I released a minor version that fixes blunders in longer time controls:
https://github.com/Witek902/Caissa/releases/tag/1.6.3

Could you please check whether or not any of the following games were affected?

[Witek902]

I released a minor version that fixes blunders in longer time controls:
https://github.com/Witek902/Caissa/releases/tag/1.6.3

Could you please check whether or not any of the following games were affected?

Yes, many games lost by Caissa in the PGN are due to a bug that should be fixed in 1.6.3

[Witek902]

Caissa 1.7 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.7

Around 40-80 Elo gain compared to 1.6.3 (depending on time control) in selfplay games.

[Gabor Szots]

Caissa 1.7 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.7

Around 40-80 Elo gain compared to 1.6.3 (depending on time control) in selfplay games.

Test gauntlet running.

[bastiball]

Caissa 1.7 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.7

Around 40-80 Elo gain compared to 1.6.3 (depending on time control) in selfplay games.

FRC gauntlet running

[bastiball]

Caissa 1.7 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.7

Around 40-80 Elo gain compared to 1.6.3 (depending on time control) in selfplay games.

FRC gauntlet running

https://www.computerchess.org.uk/ccrl/4 ... Caissa_1_7

[Witek902]

Six to go Thanks for testing!

[Graham Banks]

4CPU for 40/15 in 16062.

[Witek902]

Caissa 1.8 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.8

Around +30 Elo compared to 1.7 in selfplay games.

[Witek902]

Caissa 1.9 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.9

[Gabor Szots]

Caissa 1.9 has been released:
https://github.com/Witek902/Caissa/releases/tag/1.9

Noted. I'm going to test it as soon as I have a free core.

[Graham Banks]

Caissa 1.9 won't display option settings for me, so I can't test it using 4 cores.
Previous versions didn't have this issue.

[Witek902]

Caissa 1.9 won't display option settings for me, so I can't test it using 4 cores.
Previous versions didn't have this issue.

What do you mean? "Threads" option is correctly reported to UCI for me. I was using multithreaded search with cutechess, Nibbler and lichess-bot without issues.

Code: Select all

Caissa 1.9 (AVX2/BMI2) by Michal Witanowski
info string Loaded neural network: C:\Users\Michal\DEV\Caissa\Releases\Caissa_1.9/eval-13.pnn
uci
id name Caissa 1.9 (AVX2/BMI2)
id author Michal Witanowski
option name Hash type spin default 256 min 1 max 1048576
option name MultiPV type spin default 1 min 1 max 280
option name MoveOverhead type spin default 10 min 0 max 10000
option name Threads type spin default 1 min 1 max 1024
option name Ponder type check default false
option name EvalFile type string default eval-13.pnn
option name SyzygyPath type string default <empty>
option name SyzygyProbeLimit type spin default 7 min 4 max 7
option name UCI_AnalyseMode type check default false
option name UCI_Chess960 type check default false
option name UCI_ShowWDL type check default false
option name UseSAN type check default false
option name ColorConsoleOutput type check default false
uciok

[Gabor Szots]

Caissa 1.9 is now on the blitz list.

BTW, I have no issues with option settings.

[Graham Banks]

Caissa 1.9 won't display option settings for me, so I can't test it using 4 cores.
Previous versions didn't have this issue.

What do you mean? "Threads" option is correctly reported to UCI for me. I was using multithreaded search with cutechess, Nibbler and lichess-bot without issues.

Code: Select all

Caissa 1.9 (AVX2/BMI2) by Michal Witanowski
info string Loaded neural network: C:\Users\Michal\DEV\Caissa\Releases\Caissa_1.9/eval-13.pnn
uci
id name Caissa 1.9 (AVX2/BMI2)
id author Michal Witanowski
option name Hash type spin default 256 min 1 max 1048576
option name MultiPV type spin default 1 min 1 max 280
option name MoveOverhead type spin default 10 min 0 max 10000
option name Threads type spin default 1 min 1 max 1024
option name Ponder type check default false
option name EvalFile type string default eval-13.pnn
option name SyzygyPath type string default <empty>
option name SyzygyProbeLimit type spin default 7 min 4 max 7
option name UCI_AnalyseMode type check default false
option name UCI_Chess960 type check default false
option name UCI_ShowWDL type check default false
option name UseSAN type check default false
option name ColorConsoleOutput type check default false
uciok

Try it in ChessGUI, which is what I use for my testing.

[Witek902]

Try it in ChessGUI, which is what I use for my testing.

Where can I download it from?