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Dec 15th, 2019, 2:26pm

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 1   Arimaa / Events / Re: Computer Championship 2020  Today at 2:15pm 
Started by deep_blue | Last post by omar
In the past WCC tournaments I would setup two dedicated servers with identical hardware and allow the bot devs to upload their bots to the servers. All WCC games would be played on these servers. This was to ensure fairness by eliminating hardware differences.
If a computer tournament is organized I can have Sharp2015CC join, but I won't be able to setup dedicated servers to ensure a fair tournament. So devs will have to run the bot on their own servers.
Someone who is familiar with the tournament management tool will need to be the tournament coordinator to setup the games. deep_blue if you want to do this please send me a message so I can get you access to the tournament management tool.
Sorry I can't help out more. I've been really busy with the Shardus.com project which is building a linearly scalable distributed ledger. BTW, if anyone is interested in this, we are looking for more devs. Send me a message from my gameroom profile page.
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 2   Arimaa / Events / Re: 2020 WC Rules, Format, and Schedule  Today at 1:45pm 
Started by SilverMitt | Last post by omar
on Nov 2nd, 2019, 12:53am, SilverMitt wrote:
I am announcing my interest in running the 2020 WC.  I would like to do a bracketed double elimination format.  This is a fairly straightforward extension to the bracketed (single) elimination format, such as you see in tennis and NCAA basketball, with an additional loser's bracket for players with 1 loss.
I'd like to keep things as simple as possible besides that, but I think I can support rescheduling.  Entry fee format could be similar to last year's, and I can sponsor some entries.
Also, there will be scenarios where players only need to play 1 game over 2 weeks, and I would like to allow those games to be played in either week.  My current inclination would be to permit either player to postpone the game to the second week, with sufficient advance notice.  All other changes would require agreement from both players.  So, if the players were A and B, then I would create a scheduled game for A vs. B in the first week, but, say, A could request to move it to the second week.  If A does not show up for the game without doing so, then it would be up to B whether to win by forfeit or allow the game to be played in the second week.
Let me know if you have any suggestions, and thanks.

SilverMitt, if you are still interested in doing this, please send me a message so we can coordinate. I would suggest not allowing for the games to be played in the second week because it could cause confusing and a player could lose the game if the opponent decides to win by forfeit.
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 3   Arimaa / Off Topic Discussion / Re: Bitcoin digital currency  Dec 11th, 2019, 5:26am 
Started by omar | Last post by LloydWhite
Isn't it easier to write some widget and install it here? Does anyone even know if there are mobile apps to track course dynamics? I understand that there are many exchanges where trading takes place, I think that there is information about the rate, but I do not want to establish something heavy. I think it’s possible to develop something like this quite quickly, even if you yourself sit down with AngularJS or Aurelia  
About “people prefer diamonds for jewelery” - as for me, diamonds, unlike Bitcoin, will always be in price, but I don’t know how difficult it is to put them into circulation)
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 4   Arimaa / Site Discussion / Accessability bug in Javascript client  Dec 1st, 2019, 4:35pm 
Started by joshudson | Last post by joshudson
Bug: When high contrast is enabled, traps don't show up at all.
Suggest making trap a foreground image.
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 5   Arimaa / Bot Development / Re: Arimaa Zero  Nov 16th, 2019, 8:02am 
Started by RightfulChip | Last post by deep_blue
on Nov 15th, 2019, 11:55am, odin73 wrote:

Since  I don´t know very much about this network and AI stuff, my simple question is: Can it learn from the opponent?  

It does not. The idea of this zero approach is to not learn from anyone else but just by yourself so to speak. That is a lot slower since it starts out with basically random play but the idea is that in the long run it is not held back by anything bad and/or biased in learned from other players. (as well as of course not needing other players; you need many thousand games to train, no human could play that many against it Wink )
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 6   Arimaa / General Discussion / Re: History of Arimaa rules  Nov 7th, 2019, 5:13pm 
Started by deep_blue | Last post by deep_blue
Yes, I eventually found that thread too. Though it still leaves the question whether that's the only ever rule change since the creation of game archives. I guess I could implement elimination myself in my analysis program and then see if sharp breaks down on anything else.
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 7   Arimaa / Off Topic Discussion / Re: Christian Freeling on inventing games (part 2)  Nov 6th, 2019, 3:23pm 
Started by christianF | Last post by christianF
MindSports is progressively java free and the latest additions are Grand Chess, Chess and Chess+. Of the first two we have example games and problems, now all java free, but we don't have any Chess+ games yet.
Our request to the good Chess players at Arimaa is to come to mindsports.nl and play Chess+ and have a chance to have your game immortalised as an example game. Consider 'legal' to be fully tailored to the entering stage.
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 8   Arimaa / Bot Development / Re: Sharp 2015 available for download  Nov 3rd, 2019, 6:47pm 
Started by lightvector | Last post by Belteshazzar
on Nov 2nd, 2019, 7:51pm, lightvector wrote:
By a user request, windows version added (original post edited)

Avast said that it was a rare type of file and sent it somewhere to be inspected.
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 9   Arimaa / Off Topic Discussion / Re: This is getting scary  Oct 30th, 2019, 7:32am 
Started by omar | Last post by omar
That's awesome. Please keep us posted on your progress.
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 10   Arimaa / Site Discussion / Security vulnerabilities  Oct 17th, 2019, 4:53pm 
Started by Orb | Last post by Orb
This site has two major security vulnerabilities relating two its password system, and until these issues are resolved, every password on this site is at risk of being compromised.
The first vulnerability is that the connection is not encrypted. This allows agents involved in transferring data to and from arimaa.com to intercept all communications in an unencrypted form, which can easily be used for malicious ends.
The second vulnerability is that all passwords are stored in plaintext. This allows the site to send your password to you via email, but it also means that if an attacker gains access to the password database (which, given the security features on this site, would probably be quite easy), they will gain access to every user's password, exactly as-is. This password, for many users, will match their passwords on many other sites and services, potentially granting an attacker access to sensitive information (such as credit card numbers).
The site should, as soon as possible, obtain an encryption certificate (available for free from Let's Encrypt) and begin salting and hashing every user's password. However, this site seems to be almost un-maintained, so I would advise any user to change their password to one that does not resemble a password they use anywhere else. (This is already advisable for any site, but if your arimaa.com password is the same as your bank account number, that is a huge risk.)
If you do not believe me about this, you can find further reading about encryption here or here, and further reading about hashing here or here.
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