I don't know whether or not there are other such platforms, but I found there is quite a lot written about Diplomacy and AI - see, for example, https://www.nature.com/articles/s41467-022-34473-5 and its references.

A while back I posted to Feedback/Bug Reports https://webdiplomacy.net/contrib/phpBB3/viewtopic.php?f=17&t=4831#p356479 to say that (for SoS I should have made clear): https://webdiplomacy.net/ghostRatings.php states: expectedScore = yourGR / sumOfEachPlayersGR yet the code to be found at https://gi...

Ah, I may have inadvertently misled you. Since I was reporting only the case of six players each with equal ghost ratings of G, and a seventh with a ghost rating twice as much, 2G, I instantiated the "$grSum" in the code with 8G (1*2G + 6*1G). In your formulae, you have both that factor of 8, AND th...

Nice! A possible correction - I think there is an unnecessary factor of 8 in both your adjustment formulae.

A strange difference between the ghost rating adjustments of the scoring schemes: In a classic game where 6 of the players have the same Ghost Rating (G, say), the seventh, player P, has a rating of 2G, and the game ends in a 2-way draw with one of the 6 and the other player P, with exactly 17 cente...

I too commend BrianBaru, who I have seen enter near-hopeless positions. Note that because one's rating changes at the end of a game based on the outcome and the ratings of the other players, having a "ranking-hurt" player among one's opponents has a slightly distorting influence on how much your own...

I believe Power 2's order X-Z does NOT kill Power 3's Z's support for Y-X, because of the "except" part of the rule:
"Support is cut if the unit giving support is attacked from any province except the one where support is being given."
Hence it's a bounce between Powers 1 & 3, so X stays put.

That is a very strange game. The Chat archive is 65 pages long When I click on your first link, I get to the old interface, showing Game drawn in Spring 7281. If I click on Orders at the bottom of that page, it responds with: Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allo...

All players must "Ready" their submitted moves for the game to move on immediately. If there are any submitted moves that are not readied, then the game only progresses when the deadline for moves is reached.

After a game has been paused, once people start unpausing the Legacy Board lists "Votes: Unpause" for them, however the Point and click UI's INFO pane lists "VOTED PAUSE" for them!
This is visible at the moment in gameID=710472

Trigfea63, it you put this into your browser, does it return your games sorted in descending order of GameID?
https://webdiplomacy.net/userprofile.ph ... rID=132702

Does this work to get you a list of your games in descending game-name order? https://webdiplomacy.net/gamelistings.php?gamelistType=Search&status=All&userID=132702&seeJoinable=All&privacy=All&potType=All&drawVotes=All&variant=All&excusedTurns=All&anonymity=All&phaseLengthMin=All&phaseLengthMax=All&...

Maybe 9pm Saturday evening UK time = 10pm for continental Europe, noon in Brazil, 1pm - 4pm across N. America. Only the truly dedicated in Australia would be available at 6am on Sunday though...

I think it was perhaps not the best time of day for most people - middle of the night for Europe, evening meal time (or approaching) for US people, Monday morning in Australia.

What's to stop AI bots learning to recognize and favorably help one another? For example, they might learn that a player who is available for communication 24/7 is likely to be a bot. They may then learn that it is advantageous to ally with such a player. There need not be any explicit communication...

Note this sentence from the Avalon Hill's Official Rulebook: "Support is cut if the unit giving support is attacked from any province except the one where support is being given."

FYI, my userID=143189, and I have a Reliability Rating of 89.9%, yet I see I am allowed to join games with Required Reliability 90% (I have not done so).

You are correct - this is for case "Sum-of-squares". My apologies, I should have made that clear.

The description of Ghost Rating calculations on page https://webdiplomacy.net/ghostRatings.php states: expectedScore = yourGR / sumOfEachPlayersGR However in the code, it seems to involve the ratings SQUARED: $expectedResult[$userID] = $expectedSquare[$userID] / $expectedSum; where $expectedSquare[$...

Hi, I looked at the details of GhostRatings, described on page https://webdiplomacy.net/ghostRatings.php I believe the formula listed there: ratingAdjustment = x * (expectedScore - actualScore) is INCORRECT! It should read: ratingAdjustment = x * (actualScore - expectedScore) I found the piece of co...