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Oct 23^rd, 2024, 7:47pm

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1	Arimaa / Events / Re: Endless Endgame Event?	Sep 19^th, 2024, 8:04pm
Started by clyring \| Last post by clyring
2024 round 3 (66) setup and pairings: clyring (1830) vs browni3141 (2304)
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2	Arimaa / General Discussion / Arimaa is PSPACE-Hard	Aug 18^th, 2024, 2:11pm
Started by AstroBullivant \| Last post by AstroBullivant
Here's an interesting paper: Benjamin G. Rin and Atze Schipper out of the University of Utrecht have proven that Arimaa is PSPACE-Hard: https://drops.dagstuhl.de/storage/00lipics/lipics-vol291-fun2024/LIPIcs. FUN.2024.27/LIPIcs.FUN.2024.27.pdf At the end of the paper, the authors say that they expect someone eventually to show that arimaa is EXPTIME-Hard.
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3	Arimaa / Events / Re: 2024 WC Rescheduling and Appeal Thread	Aug 2^nd, 2024, 3:17pm
Started by SilverMitt \| Last post by SilverMitt
rabbits-CraggyCornmeal rescheduled to 9 PM ET on Tuesday (virtual slot 146).
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4	Arimaa / Off Topic Discussion / Re: Sentient AI	Jul 15^th, 2024, 1:09am
Started by omar \| Last post by dianapps
Another day of saying why AI is becoming dangerous!
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5	Arimaa / Events / 2024 WC Rules, Format, and Schedule	May 18^th, 2024, 9:15am
Started by SilverMitt \| Last post by SilverMitt
Hi. The WC event may perhaps be created soon. Omar seems to be happy to go with something a lot like last year, which was triple elimination, although it might be good to discuss the time control, where the 6-minute maximum move time was turned on, but still with the high reserve to start. Also it might be good to figure out exactly which pairing algorithm to use, as I believe I was not aware of subtle differences last year for the triple elims.
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6	Arimaa / Bot Development / Re: (no) absolute score values for pieces?	Nov 18^th, 2023, 9:13am
Started by clauchau \| Last post by aaaa
As a very belated historical note, the chosen values for the constants of HarLog, Q and G, are effectively fully determined by: (as mentioned) being indifferent to an initial trade of a dog for 2 rabbits and having the advantage of an initial trade of a horse and cat for a camel be exactly flipped after all the dogs come off the board. This works out to finding the positive value Q that satisfies: *G = (Q^2 + 13Q + 38)/((Q^3 + 15Q^2 + 74Q + 120)ln(10/7)) = -2(Q^3 + 5Q^2 - 2Q - 22)/((Q^4 + 11Q^3 + 41Q^2 + 61Q + 30)ln(65/56))**
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7	Arimaa / General Discussion / Arimaa patent expires	Nov 10^th, 2023, 8:35am
Started by aaaa \| Last post by aaaa
According to https://patents.google.com/patent/US6981700B2, the patent granted for Arimaa expires today.
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8	Arimaa / Site Discussion / Re: gameclient does not receive move of opponent	Aug 21^st, 2023, 10:37am
Started by Manuel \| Last post by Manuel
It had to do with a network setting, indeed. Thanks for the hint; I can play again!
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9	Arimaa / General Discussion / Re: Jean's book has been released !!!	Aug 12^th, 2023, 11:18pm
Started by omar \| Last post by davebliz
Are the PDFs still available? I've already ordered the paperback but would also like to have digital copies. Thanks.
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10	Arimaa / General Discussion / Re: Game History?	Aug 7^th, 2023, 12:27pm
Started by rbh \| Last post by supersamu
You can go to the "Navigation" Bar on the left of the gameroom, then select Games -> My Recent Games. On there, just click on the gameboard icon for the game you want to look at.
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