CCRL Discussion Board

Hello CCRL, just wanted to post a little update to say Maxwell is still in development! I've been working on an NNUE implementation, and training an NNUE is proving to be even more difficult than I expected :mrgreen: Also if anybody's curious, the network architecture I'm working on now is: 768->128...

I'll put Maxwell into Division 10. Thank you so much! Collecting the PV line was much much simpler than I thought, I went with the easier method of recursively walking through the transposition table Here's the new patch: https://github.com/eboatwright/Maxwell/releases/tag/v3.1-3 Great stuff! :) Th...

Graham Banks wrote: ↑Fri Feb 23, 2024 8:01 pm I'll put Maxwell into Division 10.

Thank you so much!

Collecting the PV line was much much simpler than I thought, I went with the easier method of recursively walking through the transposition table
Here's the new patch: https://github.com/eboatwright/Maxwell/ ... tag/v3.1-3

Maxwell now displays the depth and evaluation, but not its main thinking line. Maxwell currently doesn't collect the PV line, because the old PV-table implementation I had in development slowed down the engine alot, so I had to cut it and just print out the current best move instead. I'll work on it

Graham Banks wrote: ↑Fri Feb 23, 2024 6:42 am In ChessGUI, your engine will run, but doesn't send its thinking line and eval to the GUI.

Here's the new patch! https://github.com/eboatwright/Maxwell/ ... tag/v3.1-2

In ChessGUI, your engine will run, but doesn't send its thinking line and eval to the GUI. Yeah it's UCI interface is currently very minimal, I'll implement that real quick :thumbsup: Although I can't actually show the full PV line right now, as it's not being collected in Maxwell (I tried to imple...

There's gotta be a running joke that you only find bugs after you make a major release, and here it is
This patch fixes a bug where the engine would crash if the Hash size was set to 0 MB

https://github.com/eboatwright/Maxwell/ ... tag/v3.1-1

Maxwell v3.1 is out!!
https://github.com/eboatwright/Maxwell/ ... s/tag/v3.1

Test results vs v3.0.8-2 I'm real excited to see this one's rating

And a new patch has been put out https://github.com/eboatwright/Maxwell/releases/tag/v3.0.8-2 Although if you have to add this as separate version, you an probably just skip it, because I think v3.1 might be out soon :D Thank you! I will skip it. And I suggest you take your time with the next versi...

And a new patch has been put out
https://github.com/eboatwright/Maxwell/ ... g/v3.0.8-2

Although if you have to add this as separate version, you an probably just skip it, because I think v3.1 might be out soon

Thank you!

Thanks! I actually just fixed it: I ran another huge test last night, got another illegal move, opened up the PGN and the bug was so stupid, but it makes so much sense :lol: The bug was when one rook would take another rook from the other side of the board, it would only consider to remove castling ...

Hey, quick question: did Maxwell play an illegal move anywhere in your testing? I just ran a big test in Cutechess (the GUI I use) and in the results window it says: "Loss: played an illegal move "e1g1"", but it doesn't tell me in what position, and I had PGN saving off. Did this...

Thanks for testing Maxwell! It's really cool to see my little engine up there on the listings, I'm still hard at work on v3.1: I've been rewriting the whole search function to be more centered around a Principal Variation Search, whereas before it was more focused on Late Move Reductions

Awesome, thank you! I'm excited to see how it does

Sorry I meant that I'm getting close in the version numbering: only having v3.0.9 and then v3.1 left, I'm no where near being done developing it because I want to make it a big release

Graham Banks wrote: ↑Sun Jan 07, 2024 2:02 am This thread is okay to announce new releases.

Ok awesome!

One last question: should I make a new post on this thread when a new Maxwell version comes out? I won't spam with my releases every couple days, but I'm getting near v3.1 and I want to make that a big release

Alright cool, thanks for your time! I'm excited to see how Maxwell performs

With debug=true it should output the number of nodes, current evaluation, and current best move every ply.
Is there a UCI format that I should also print that data to?

None I am aware of.

I want to emphasize that we have no special conditions to include an engine in our tests.

Ok: I got "go depth X" parsing correctly, as well as "id name" and "id author" printing out upon receiving the "uci" command. And I put out a new release here: https://github.com/eboatwright/Maxwell/releases/tag/v3.0.8-1 with the new additions :D And some engi...

At your page you write it can play only from the start position. At the same time it supports the position command. Is that not contradictory? Yeah sorry: It supports "position startpos", but not "position fen". Does that need to be implemented? The only way it currently support...

Thanks for getting back to me so quick! Name: eboatwright Nationality: American Website link: I don't have a website, but my Github would be great: https://github.com/eboatwright or https://github.com/eboatwright/Maxwell 100% Free and open source! On my mid-2012 Macbook Pro running Ubuntu 22.04, it'...

Hello CCRL! Over the past few months I've been developing a Chess engine in Rust, and I'd love to see it on the CCRL! I'm constantly updating it, but the current version is 3.0.8, and Windows & Linux binaries are available here: https://github.com/eboatwright/Maxwell/releases/tag/v3.0.8 Please l...