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A place to discuss topics/games with other webDiplomacy players.
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gman314 (1016 D)
12 Mar 11 UTC
(+19)
Winning
Oli won.
On Imperial Civilization's off-topic thread (link inside), there was a brief stint of Second to Last Person to Post Wins. Now that the thread is closed, Oli won.
Page 235 of 235
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mouse (1945 D)
Wed 12 Dec UTC
In most cases you'll end up with a dead ant well before it reaches the end, though.
Name that tune.
Dejan0707 (1778 D)
Wed 12 Dec UTC
Tune that name
Sky_Hopper (766 D)
Thu 13 Dec UTC
Page 234 in a nutshell: Sherlock and Watson, depressing posts about depressing posts, 7000th post, math facts, food facts, ants
@Dejan's rubber rope problem: only if the ant walks quickly and doesn't pause for a single second.
Yoshimon (800 D)
Thu 13 Dec UTC
Hot dang.
Dejan0707 (1778 D)
Thu 06 PM UTC
An ant starts to crawl along a taut rubber rope 1 km long at a speed of 1 cm per second (relative to the rubber it is crawling on). At the same time, the rope starts to stretch uniformly by 1 km per second, so that after 1 second it is 2 km long, after 2 seconds it is 3 km long, etc. Will the ant ever reach the end of the rope?
JECE (1466 D)
Thu 06 PM UTC
No.
kevdog8 (1198 D)
Thu 06 PM UTC
Yes.
Yoshimon (800 D)
Thu 06 PM UTC
What?
Yes, the ant will reach when time and rope length reaches infinity but only if the ant lives an infinite life span.

This doesn't work, however, if the rate of expansion is an accelerated one (Dt^2) or if the ant has a limited life span.
Caerus (1551 D)
Thu 08 PM UTC
I really like the maths. Keep it up guys!
Dejan0707 (1778 D)
Sat 06 PM UTC
At first consideration it seems that the ant will never reach the end of the rope, but in fact it does. (In the form stated above, it would take 8.9×1043421 years.) Whatever the length of the rope and the relative speeds of the ant and the stretching, providing the ant's speed and the stretching remain steady the ant will always be able to reach the end given sufficient time. Once the ant has begun moving, the rubber rope is stretching both in front of and behind the ant, conserving the proportion of the rope already walked by the ant and enabling the ant to make continual progress.
Player5 (1455 D)
Sat 06 PM UTC
Kevin made a really nice video on this topic (ant on rubber rope) a few weeks ago:
https://www.youtube.com/watch?v=OM9KepKsg6U
They key to the math problem is an ever increasing percentage of the rope gets covered so more and more of the increased length is behind the ant. Once he reaches the mid point, more stretch occurs behind him that in front. Additionally, each step, while a smaller over all percentage is more than half the previous times coverage so the ant can achieve half the length at which point success is inevitable. Let's say the ant rate was 1 unit per and the rope stretch was 2 per. After the first stretch the ant travels 1/4 the distance. Then 1/6th then 1/8th. He has crossed the halfway point.

If you have the rope accelerate, however, the ant won't achieve 50%. For instance, if the rope doubles it's length every unit, the ant covers half the relative distance of the previous move. 1/4, 1/8, 1/16. So the ant only reaches the mid point at infinity.
Further more, if the ant moves first and achieves mid point in the accelerated scenario then the aunt achieves completion at infinity.
kevdog8 (1198 D)
Sun 03 PM UTC
I called it first, on Thursday at 1pm EST. kevdog8 1, JECE 0.
Yoshimon (800 D)
01:37 AM UTC
Got dang, this is a lot more fun than algebra class.
JECE (1466 D)
05:15 AM UTC
https://www.youtube.com/watch?v=OM9KepKsg6U&t=618s
In other words, no. The ant will never reach the end of the rope.

Also, ants are not points. Ants can't stretch like this at 1km/s without dying:
https://www.youtube.com/watch?v=OM9KepKsg6U&t=239s

Your math teacher lied to you.
Mercy (2068 D)
12:27 PM UTC
According to my calculations, in general the ant will reach the end of the rope after (e^(u/v) - 1) / u units of time, where v is the speed of the ant, u is the speed at which the rope is stretched, and speed is measured in original length of the rope per units of time.

@JECE "Also, ants are not points. Ants can't stretch like this at 1km/s without dying"
The ant does not stretch at 1 km/s, the rope it is sitting on does. In fact, I have the suspicion that the speed at which the ant itself crawls - which is in this case 1 cm/s - always upper limits the speed at which the stretching of the rope can cause the ant to move.
Mercy (2068 D)
02:41 PM UTC
Okay forget that last thing that I said, though it may apply to acceleration.


7040 replies
kaner406 (1375 D Mod (B) (B))
Mon 10 Dec UTC
Face to Face play in what seems like forever...
So I've finally convinced my gaming group to have a go at Diplomacy, and i have to say I'm looking forward to doing this thing again after what seems like forever. Only problem is they are all newbies to the game. Any advice from folks as to how to introduce Diplomacy to gamers (who haven't played Dip) before?
16 replies
Open
kaner406 (1375 D Mod (B) (B))
08 Sep 18 UTC
(+1)
Variant Development Thread
This thread is made for the express purpose of cutting down of multiple threads that deal with new variants, ideas, concepts etc...
72 replies
Open
nopunin10did (1041 D)
Fri 07 PM UTC
Congratulations to CaptainMeme & Amby!
Just wanted to let you know that the 2018 Tournament Through Time, hosted on the PlayDiplomacy forums, has ended. Amby and CaptainMeme were both a part of the Baratheon Dynasty, a team that won 3rd place.
2 replies
Open
mrcharles (1174 D)
Fri 08 PM UTC
Drawing with Civil Disorders
Can the remaining players vote to Draw between themselves or would the players in Civil Disorder be included in the draw?
2 replies
Open
butterhead (975 D)
21 May 12 UTC
(+11)
Advertise your NON-live games here!
In an effort to compromise the pro-ads versus anti-ads for games: Post here for your non-live games to cut down on the number of ads but still advertise games. Post game link, WTA or PPSC, and the bet. Note: this doesn't count for special rules games.
2518 replies
Open
Sky_Hopper (766 D)
Thu 06 Dec UTC
Better country randomization
We need a better country randomization script than just assigning people countries by the order they join. I've started 2 variants of Classic (FoW and Octopus) and I've gotten England both times.
17 replies
Open
Devonian (1871 D)
29 Jun 15 UTC
(+14)
1v1 Tournament Rules, Rankings, and Challenges
Official Rules for 1v1 Ladder Tournament
1698 replies
Open
Sky_Hopper (766 D)
Thu 29 Nov UTC
(+1)
Returned
Well, here I am.
It's been a long break, and I feel it's time to return, now that the frenzy that made vDiplomacy terrible (I'm sure you remember it) has ended.
Here we go, as I try to regain those vPoints...
13 replies
Open
bamzolino (1000 D)
Thu 06 Dec UTC
Adjucation bug. Can it be fixed?
This move seems to be adjucated wrong. Support shouldn’t be cut from where it is going into if I understand the rules correctly. Armenia supported move from Rumani to Sevastopol, but it was cut even though Sevastopol is the target.
https://vdiplomacy.com/board.php?gameID=36686
I don’t know how to post pictures, but the link should allow others to see the game. I would like to know if this can be fixed as it wildly changes the game.
2 replies
Open
ingebot (1715 D)
04 Oct 18 UTC
(+1)
Workaround to "forced" ready
In rulebook press, part of the idea is that for retreat and builds it forces you to ready up. However, simply by then pressing "not ready", the order changes to "saved". Is it possible to promote the original idea of this press type by making the state of "not ready" equal to "no orders received"?
37 replies
Open
ingebot (1715 D)
Fri 30 Nov UTC
Age of Pericles
In the "Age of Pericles" variant, the map clearly shows that Euboeius Sinus and Thermas Sinus border each other (top right). However, the movement between them is apparently not possible; this is confirmed by looking at the map info. However, given that the map shows them as clearly in contact, isn't this a mistake?
4 replies
Open
OrdinalSean (1030 D)
Sat 01 Dec UTC
CountrySwitch gameID=36173 Song-Empire
Diplo is beginning to depress me. As such I'm open to anyone taking over from me. I'm Song-Empire, 23 SCs, currently fourth place. I'll PM details to anyone who replies saying they want to join.
0 replies
Open
David E. Cohen (1000 D)
11 Nov 18 UTC
(+3)
Armistice
100 years today.
40 replies
Open
Pudge (964 D)
26 Nov 18 UTC
Games
I would like to have groups of friends to play games more often here, I hope that if someone wants to participate more actively tell me
5 replies
Open
AIShandling (941 D)
21 Nov 18 UTC
Own Varients
Is it possible on this site, or anywhere online, to upload your own variant to play?
8 replies
Open
Pudge (964 D)
24 Nov 18 UTC
Fast Game
hey, good a Saturday for all, anyway want play a fast game today? pls say me! regards!
3 replies
Open
Anon (?? D)
24 Nov 18 UTC
Fast Game
If wants to play a fast game today go a https://vdiplomacy.com/board.php?gameID=36608
0 replies
Open
Just need some Clarification
So I have a fleet ready to attack New Zealand and there's an enemy one ready to do the same. If I use a supported attack from some other troops to attack the enemy fleet (assuming it has no unit supporting it holding) while moving in to New Zealand with my other fleet what happens?
6 replies
Open
PTTG (845 D)
16 Nov 18 UTC
Mistakenly dropped from a game?
Re; gameID=36387. My country was put into CD and I was dropped despite playing as normal and checking in every day.
I don't care about getting back in the game, but I would like to fix my reliability score.
1 reply
Open
jmodugno (1031 D)
12 Nov 18 UTC
Can someone explain this move?
Why did Rumania support to budapest from Galicia fail?
https://vdiplomacy.com/map.php?gameID=36477&turn=6&mapType=large
5 replies
Open
ScubaSteve (1199 D)
08 Nov 18 UTC
Health Problems
I have a couple of games going. One super interesting and one less so. Would anyone be willing to take over?
9 replies
Open
Yoshimon (800 D)
11 Nov 18 UTC
(+2)
Replacement
I’m going through some mental health issues right now, and would appreciate if someone would be willing to take over 3 games that I’m currently in
3 replies
Open
The Ambassador (1676 D (B) (B))
02 Sep 16 UTC
(+7)
New podcast for online Dip games
Hi everyone

Kaner and I have started a podcast about playing Diplomacy online....
198 replies
Open
WWII Tournament
I would like to start a tournament. I've seen the Known World and 1v1 tournaments, and those are great fun. So why not apply it to World War II? I'm still working out the details, but I'll post some details.
353 replies
Open
The Ambassador (1676 D (B) (B))
03 Nov 18 UTC
Kaner temporarily offline
Hi everyone - in case you're waiting on Kaner for any games etc, his internet connection at home has died and his ISP are being difficult. Not smart when his ISP contract ends in a week. So he's going to switch providers in a week and will unfortunately have to "go dark" from vDip for that period of time. But he will be back.
9 replies
Open
Mercy (2068 D)
31 Oct 18 UTC
Newspaper Game
A while ago, some players in threadID=80668 discussed playing another Newspaper game. Meanwhile, more than 7 players have shown their interest to participate in it, but no consensus on the specific settings of the game has been reached yet. I have created this thread to set up the next Newspaper game and discuss its settings.
33 replies
Open
nopunin10did (1041 D)
26 Oct 18 UTC
(+2)
Recruiting for Dissolution (Play by Slack/Discord/Email)
Next year, starting in Jan or Feb 2019, I will GM a game of Dissolution, a 10-player Diplomacy variant* of my own creation. Dissolution is set in the 1990's, just after the breakup of the Soviet Union. This game is not a vDiplomacy site game; it will be played with most communication handled via IM (either Slack or Discord), with some email too.

More details below.
6 replies
Open
The Ambassador (1676 D (B) (B))
31 Oct 18 UTC
Diplomacy World needs a hand!
The quarterly mag needs a few good Dippers. Find out more at https://mailchi.mp/c18279ad9e1d/diplomacy-world-staff-vacancies and give a hand for the hobby!
9 replies
Open
BBQSauce123321 (1422 D)
11 Oct 18 UTC
Grey Fog of War
So I have just discovered variants for both Grey Press and Fog of War. I have no idea how to code so can't make this happen, but if someone was able to combine these two variants, it would make for a very very interesting game, especially in Public Press
37 replies
Open
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