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 1   Arimaa / Bot Development / Re: bot_Ananas  Sep 12th, 2020, 5:40pm 
Started by Max2 | Last post by Max2
V0.2
12.09.2020  
Machine Learning (ML) is added: a position can get an automatic value.
Therefore a neural net was trained with half a million positions, played in the gameromm by humans or bots.
 
The ML search uses Breadth First Search and checks all positions after ply 1 (P1; 4 steps).
The "good" play at the end of the games (see link one post above) comes from the handcrafted features which add a bit P2/P3.
 
Current stand of problems:
There might be many bugs. Of course, the Breadth First Search is very slow in open positions with many pieces.
 
-> Ananas will not be available for playing in the next time, until some of the problems will be solved.
 
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 2   Arimaa / Bot Development / Re: Arimaa AlphaZero Challenge  Sep 9th, 2020, 5:02pm 
Started by omar | Last post by ajzaff
bot_zoo may be competing if I stick to it.
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 3   Arimaa / Bot Development / bot_zoo  Sep 9th, 2020, 3:48pm 
Started by ajzaff | Last post by ajzaff
I'm building a new open source Arimaa bot!
 
https://github.com/ajzaff/bot_zoo
 
I started bot_zoo a two weeks ago as hobby project, and it's  coming along nicely! My intent is to build as strong as possible a core engine, then optimize the evaluation bits (static eval, and move orders) using self play building on some previous work of mine (https://github.com/ajzaff/arimeval).
 
I'm not sure if this qualifies me for the 2021 bot championship but it's likely I wouldn't be ready anyways Smiley
 
Current engine features:
 
* Movegen
* Alpha beta negamax search
* Iterative deepening
* Transposition table
* PV move order
* Aspiration windows
* Null move
* Quiescence
* Parallel search with variance-boosting lazy SMP (https://www.chessprogramming.org/Lazy_SMP).
* Arimaa Engine Interface
 
How does it play?
 
Beginner level play capable of seeing up to 3 move ply. The good news is, I think I'm already at the point where I can't improve it much without hand tuning but we'll see.
 
If you are interested in seeing the bot development on Github, please let me know so I can make the switch to 100% on Github development.
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 4   Arimaa / Off Topic Discussion / Re: This is getting scary  Aug 29th, 2020, 5:03am 
Started by omar | Last post by cyberix
The chess community has setup the Leela Chess Zero project for developing a chess AI comparable to Alpha Zero. Anyone can participate in providing computational resources to the project. Perhaps the same open source software could be used for a Leela Arimaa Zero project.
 
See https://lczero.org/ for details.
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 5   Arimaa / Off Topic Discussion / "How to play chess"  Aug 18th, 2020, 3:56pm 
Started by Belteshazzar | Last post by Belteshazzar
Anyone here follow Daniel Lavery, formerly Mallory Ortberg? https://www.shatnerchatner.com/p/how-to-play-chess
 
I wonder what he would say about Arimaa.
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 6   Arimaa / Bot Development / bot_Annaa  Aug 16th, 2020, 2:49pm 
Started by Max2 | Last post by Max2
The name of bot_Annaa is the result of a letter recombination from:
Arimaa palying bot, using a neural network
 
bot_Annaa will be a bot, trained only on self-play games from scratch, using reinforcement learning.
 
bot_Annaa will only be implemented and trained, if bot_Ananas (uses supervised learning) will look promising.
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 7   Arimaa / Say Hello / Re: Hello from singularity - a beginner.  Aug 6th, 2020, 8:02pm 
Started by singularity | Last post by browni3141
Welcome! Fritz is a great guy but he doesn't play anymore unfortunately.
 
Have fun!
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 8   Arimaa / General Discussion / Re: Rescuing Arimaa sets  Aug 2nd, 2020, 10:16am 
Started by omar | Last post by omar
on Jan 6th, 2020, 9:33pm, mattj256 wrote:
Any plans to resell those Arimaa sets on Amazon?
The current price on Amazon is $75!
https://www.amazon.com/Z-Man-Games-7037-Arimaa/dp/B002LHIU3Y/

 
I'm not able to sell it on Amazon anymore. Z-Man games was sold to another company and they contacted Amazon to stop sales of the sets so they can reclaim the bar code number. Amazon wants me to obtain a new bar code number and wants me to put stickers for that on all the sets.  
 
You can still buy the sets from the link on the main page of this site.
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 9   Arimaa / Off Topic Discussion / Re: "Bad Show"  Jul 28th, 2020, 12:28pm 
Started by Belteshazzar | Last post by Arimabuff
I think if they were honest they would retitle their game "who wants to be accused of cheating their way to be a millionaire?"
 
Two years is a long time to be accused of anything. It looks like once you've been a candidate to this fraud you have a sword of Damocles over your head... for life!!!
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 10   Arimaa / General Discussion / Re: Games with live commentary / coverage  Jul 12th, 2020, 4:14am 
Started by jsiehler | Last post by clyring
Unfortunately, a fair number of the commentary recordings which were once available have vanished from the web, especially those from the 2013 and 2016 event seasons. Most or all of the commentaries which are still available can be found at the links on this Arimaa wiki page, which I didn't realize existed until I looked for it while trying to answer your question. Previously the only central collection I knew of was my own, which is already on that page.
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