New engine releases 2020

[Madeleine Birchfield]

Vivien Clauzon has released Minic 3.02:

https://github.com/tryingsomestuff/Mini ... s/tag/3.02

[JohnWoe]

I decided to release Mayhem 2.5.
Too many changes to remember. Mostly speedups. I can't remember.

This version is the first Mayhem to beat Glaurung 2.2 in Blitz match.
Which has been a difficult opponent for Mayhem.

Release: https://github.com/SamuraiDangyo/mayhem ... s/tag/v2.5
Source code: https://github.com/SamuraiDangyo/mayhem

Added KQKR heuristics. Was kinda annoying to see Mayhem always shuffle KQKR to ½-½.
Seems to work fine
...

hello,
Until this version i could not managed to compile for rpi4. so that's good news !
Now i have 1 question : is your engine only using 1 core ? I have 300 kns search speed for 1 core of rpi4

Thanks!
Good to know Mayhem is working well. 300 knps is a bit low. Mayhem is ~100% faster (much weaker of course) than SF12 which uses the same NNUE evaluation. Mayhem is really sensitive on search speed as a wide searcher.

About 1 core. Yes Mayhem only uses 1 core atm. Everything is basically global. That's the simplest design.
AB search is hard to scale anyway. I want to scale perfectly on 1M cores not just 64. So for multiple cores I think MCTS is the right choice (If I start v2.6).
SMP is only speedup. Multiple threads give speedup no smartness.

I decided to release Mayhem 2.5.

Could you please include popcount and non-popcount exes as well?

Thanks.
I added 2.5 nopopcnt to releases. It's slow but should work fine. The -modern is popcnt version.

[Pi4Chess]

hello,
Until this version i could not managed to compile for rpi4. so that's good news !
Now i have 1 question : is your engine only using 1 core ? I have 300 kns search speed for 1 core of rpi4

Thanks!
Good to know Mayhem is working well. 300 knps is a bit low. Mayhem is ~100% faster (much weaker of course) than SF12 which uses the same NNUE evaluation. Mayhem is really sensitive on search speed as a wide searcher.

About 1 core. Yes Mayhem only uses 1 core atm. Everything is basically global. That's the simplest design.
AB search is hard to scale anyway. I want to scale perfectly on 1M cores not just 64. So for multiple cores I think MCTS is the right choice (If I start v2.6).
SMP is only speedup. Multiple threads give speedup no smartness.

Ok for me it's fine. Just wanna know if i did something wrong while compiling

I know smp is for speed on Bullet or Blitz games and elo scaling is not x number of cpus. Rpi4 is little machine so 1 core engines might be lower elo than intended. For taking a straight fact : Ccrl bench on SF 10 with the reference core is 2054 ms while my overclocked rpi4 is 5000ms with 1 core and 2500ms with the 4 cores

[jshriver]

I decided to release Mayhem 2.5.

Heads up I'm using a 6 month old computer, and imported your engine into Fritz 17 and it crashes. Are their debug logs?

Running a modern i5 so popcnt, etc shouldn't (hasn't) been an issue.

[jshriver]

Vivien Clauzon has released Minic 3.02:

https://github.com/tryingsomestuff/Mini ... s/tag/3.02

Wonderful!

[JohnWoe]

I decided to release Mayhem 2.5.

Heads up I'm using a 6 month old computer, and imported your engine into Fritz 17 and it crashes. Are their debug logs?

Running a modern i5 so popcnt, etc shouldn't (hasn't) been an issue.

Thanks!
I compiled that (Windows?) .exe with my i3 laptop. It should work fine.
Mayhem doesn't log to files. It however prints "Error #X" message sometimes, if it even starts.
Probably need to be build again. That way it will be faster anyway. Tho there might be real bugs I need to fix.

[silentshark]

I have released Francesca 0.30. Available from www.silentshark.co.uk

Not a huge jump in strength, maybe 30 ELO or so.

Changes

Small changes. Minor optimisations. More aggressive null move pruning. IID replaced by IIR (thanks to Ed Schroder for idea). Tweak to futility to make more aggressive or not, depending on if position is improving. Separate search functions when in check. Minor eval tweaks - tuning needed

Happy Christmas to everyone. Let's hope 2021 is a better year, and the world gets on top of the Coronavirus.

[jshriver]

I have released Francesca 0.30. Available from www.silentshark.co.uk

Tank Time and Yikes! Zombies! Run look fun too

[Gabor Szots]

I have released Francesca 0.30. Available from www.silentshark.co.uk

Not a huge jump in strength, maybe 30 ELO or so.

Changes

Small changes. Minor optimisations. More aggressive null move pruning. IID replaced by IIR (thanks to Ed Schroder for idea). Tweak to futility to make more aggressive or not, depending on if position is improving. Separate search functions when in check. Minor eval tweaks - tuning needed

Happy Christmas to everyone. Let's hope 2021 is a better year, and the world gets on top of the Coronavirus.

Thanks Tom and the best wishes.

[silentshark]

I have released Francesca 0.30. Available from www.silentshark.co.uk

Tank Time and Yikes! Zombies! Run look fun too

Not worked on them for a while, but had a lot of fun a few years back building simple Android and iOS games with the kids. Probably need to tweak things to ensure they are still on Google Play, and I think my Apple tax ran out a while back..