The Shortest Possible Game of Monopoly: 21 Seconds

OK, since no one is posting, you get to endure another Monopoly post!

After our recent attempt to play the shortest actual game of Monopoly on record, we started to wonder about what the shortest THEORETICALLY POSSIBLE game of Monopoly would be. That is, if everything went just the right way, with just the right sequence of rolls, Chance and Community Chest cards, and so on, what is the quickest way one player could go bankrupt? After working on the problem for a while, we boiled it down to a 4-turn (2 per player), 9 roll (including doubles) game. Detail on each move given below. If executed quickly enough, this theoretical game can be played in 21 seconds (see video below).

Player 1, Turn 1:

Roll: 6-6, Lands on: Electric Company
Action: None, Doubles therefore roll again

Roll: 6-6, Lands on: Illinois Avenue
Action: None, Doubles therefore roll again

Roll: 4-5, Lands on: Community Chest “Bank error in your favor, Collect $200″
Action: Collects $200 (now has $1700)

Player 2, Turn 1:

Roll: 2-2, Lands on: Income Tax
Action: Pay $200 (now has $1300), Doubles therefore rolls again

Roll: 5-6, Lands on: Pennsylvania Rail Road
Action: None

Player 1, Turn 2:

Roll: 2-2, Lands on: Park Place
Action: Purchase ($350, now has $1350), Doubles therefore rolls again

Roll: 1-1, Lands on: Boardwalk
Action: Purchase ($400, now has $950), Doubles therefore rolls again

Roll: 3-1, Lands on Baltic Avenue
Action: Collect $200 for passing GO (now has $1150), Purchase 3 houses for Boardwalk, 2 for Park Place ($1000, now has $150)

Player 2, Turn 2:

Roll: 3-4, Lands on: Chance, “Advance to Boardwalk”
Action: Advance to Boardwalk, Rent is $1400, only has $1300 = Bankrupt

This entry was written by DJM, posted on May 30, 2010 at 9:04 pm, filed under Uncategorized. Bookmark the permalink. Follow any comments here with the RSS feed for this post.
Both comments and trackbacks are currently closed.

“If he does not wish to buy the MONOPOLY property it is sold at auction by the Banker to the highest bidder.”

The following properties were landed on and went unpurchased and didn’t go through an auction either (which is a rule violation):

Winning Player:
Electric Company
Illinois Avenue
Baltic Avenue

Loosing Player
Pensylvania Railroad

What the looser purchases is irrelevant since he is destined to go bankrupt anyway…

But the winning player would have either

spent some of his money, and therefore wouldn’t be able to afford the houses to bankrupt player 2
or
they would have had an auction which would have taken up more time.

If you want to be stupid about it… which they already were since the players weren’t buying valid properties… I can legally bankrupt player 2 on his first role, and accomplish it in 5 seconds (I didn’t make a video, but I did it).

Player 1: rolls a 1:2, lands on Baltic avenue, doesn’t want it, declares auction. Player two offers $1450 for it. Player 1 declines, player 2 tosses the cash and gets the card, and now has only $50.

Player 2 roles a 1:1 and lands on community chest “Pay School Tax: $150″ Player 2 bankrupt. Game over… legally.

Several people have pointed out this auctioning thing, but it’s not right. Someone doesn’t HAVE to buy it. All players can refuse to bid. The property goes unsold. We didn’t bid. Auction over. The wild auctioning have been taken up previously as well–and I think that is completely valid. Likewise, someone else pointed out an even shorter, completely legal, strategy on another blog which is that one player just immediately quits! Nothing in the rule preventing that!

(Although, when you write this up for publication, I think the proper move for Player 2 is to pay the 10% rather than the $200 on Income Tax, even though it isn’t enough to save her/him.)

You are absolutely correct about the income tax. I can’t believe we missed that after everything we went through to get it down to this point. And, while there are obviously other ways to do this in the same number of rolls, I also can’t think of how to get it shorter than this. Risk, Parcheesi, Life, Candyland…the possibilities are endless…

Two things – actually, current Monopoly boards have the income tax as $200 – 10% is not an option. Second, when you land on an unowned property, “none” isn’t a realistic action. If the player who lands on a property chooses to not buy it, the property goes up for auction (if, of course, you’re playing by the rules). While it *is* possible that no one would buy the property, even for a $1, I don’t think it’s very likely. If we’re going to consider unrealistic possibilities, consider this:

Player 1, Turn 1:
Player rolls anything that lands them onto a property. Doesn’t buy it – it auctions. Both players bid until Player 2 bids $1,500. P2 gets the propert.

Player 2, Turn 1:
Player 2 rolls and lands on Income Tax (on a current board) and has to pay $200. Game over.

Very good! I’m definitely going to remember your strategy the next time I want to get out of a Monopoly game quickly!

Using insane auctioning, I think I can do you one better though: Player 1 rolls double 4s–landing on Vermont–declines to buy and auctioning begins. Since you can bid on a property you declined to buy, the auctioning continues and Player 1 ends up buying Vermont for $1500. Then the second roll based on doubles is a 4-5, community chest and its any card where you have to pay. Player 1 is bankrupt and Player 2 never even had a turn!

I also think you can do the same thing without landing on any actual properties, thus eliminating auctioning:
P1: 5-5 Jail, 6-6 Chance, 5-6 Community Chest
P2: 5-5 Jail, 4-3 Comm Chest (pay 150)

@blue monster
You Player 1 bankruptcy isn’t realistic (as unrealistic as this all is). The auctioning doesn’t begin until the landing player opts to *not* buy the property.

Why then, would this player decide to purchase it within the auction process for a much more expensive price.

Although, I guess he could be trying to get it for cheaper (doesn’t buy it, and Player 2 is only willing to risk $1 on the purchase, so Player 1 gets it for $2).

@walesmd – It *is* possible. I’ve let stuff go to auction thinking I could shave a few bucks off when another player decides to drive the price up. Now, it is *unlikely* that the price would get driven up to $1,500… ;)

The hidden assumption here is that the rules are being followed. In my family it was perfectly possible to have games of Monopoly that ran a good deal shorter than 21 seconds given the propensity of some players to steal all your money or turn the board upside down or throw your top hat down the stairs. To be honest I’d always thought the real purpose of Monopoly was not so much to be a proper board game but rather to serve as a focus for sibling conflict.

Indeed. The quickest game I ever played was the one where I caught my brother hiding a couple of $500 bills under his corner of the board before the game even started!

Well, roll #7 is completely irrelevant as long as it’s a double in the 2-2 to 6-6 range; and the Chance card doesn’t matter. I guess that was just icing, because P2 is already low enough on cash before hitting that final chance.

Here’s another way that takes only 8 moves and two turns per player, and does not require Boardwalk and Park Place. In fact, neither player touches the fourth side of the board. Also, there are no insane auctions, and Player 2 does not get to make any decisions at all about buying property.

Player 1, Turn 1:
1-1 -> Community Chest, Bank Error in Your Favor, collect $200 (Player 1 now at $1700). Doubles, so roll again.
5-3 -> Visiting Jail.

Player 2, Turn 1:
3-1 -> Income Tax, Pay $200 (Player 2 now at $1300, or $1350 if 10% of assets ($150) is allowed as in the older games – it really doesn’t matter).

Player 1, Turn 2:
3-3 -> St. James Place, Buy for $180 (Player 1 now at $1520). Doubles, so roll again.
1-1 -> Tennessee Avenue, Buy for $180 (Player 1 now at $1340). Doubles, so roll again.
3-1 -> Chance, Go Back 3 Spaces -> New York Avenue, Buy for $200 (Player 1 now at $1140).
At the end of his turn, Player 1 puts 4 houses on St. James Place ($400), 3 houses on Tennessee Avenue ($300), and 4 houses on New York Avenue ($400), for a total cost of $1100 (Player 1 now at $40 cash on hand).

Player 2, Turn 2:
6-6 -> St. James Place, with 4 houses is $750 (Player 2 now at $550 or $600, depending on the income tax square). Doubles, so roll again.
2-1 -> New York Avenue, with 4 houses is $800.
GAME.

There are several variations to this sequence of events that ultimately produce the same result. Player 1’s first turn could be land on Community Chest, get Advance to Go Collect $200, then get a 6-4 to visit jail. Or, after obtaining $200 from Community Chest via bank error or going to go, visiting jail could be reached by doubles (4-4 in my original scenario or 5-5 in the alternate scenario). In this case, a 4-2 or 5-1 gets St. James on Player 1’s first turn, and he/she simply buys Tennessee Avenue and New York Avenue via the same rolls and methods as listed above in his/her second turn.

And yes, I spent way too much time figuring this all out. Oh well, I really enjoyed thinking about it – excellent idea for a post!

This certainly looks like the most elegant solution. The proviso in all the fast games is that people are actually suicidal: not keeping any capital for further property purchases.

That early in the game it’s unlikely, but in later stages of the game improving your properties in the hope of a windfall is decidedly more prevalent. Especially if you’ve got a few squares that are going to bankrupt you anyway, and there is nothing left to buy except houses.

One interesting tactic is for two players deciding not to build hotels. That can lead to a shortage of houses, blocking those further behind in development from buying any – you have a finite number of houses in the set. Well worth it when you’re against the in-laws.

Since I’m sure you were curious about the odds of this particular game taking place if we allow one to get, e.g the 7 in P2T2 any which way (one in 6 rolls), and taking chance as 1 in 16, then 1 in 15 (there are 16 chance cards), it’s:
1/36*36*9*16*36*18*36*36*18*6*15. That’s once every 253,899,891,671,040 games. (once in every 250 trillion games or so)

So this leads to the question of what is the total probability (_all_ the ways) that P1 could defeat P2 without P2 having any choice in the matter (i.e., without the option to buy any properties, etc.).

In addition to the people commenting about the land auction rules above, I also remember a rule that you couldn’t actually buy property until you went around the board once. It could be that this was a house rule, but my memory is telling me otherwise.

Even in your own example, the second roll of player 2, turn 1 is unnecessary. The first roll can be 1-3 instead of 2-2, thereby ending the turn since it isn’t a double. And on player 2’s second turn, s/he can still land on Chance and be directed to Boardwalk.

For more realism in your example, so that no properties go unpurchased: player 1, turn 1, roll 1 could be 5-5, placing them on visiting Jail. Roll 2 could be 6-6, placing them on Chance (doesn’t really matter what card they get as long as it doesn’t move them backwards or cost them too much). Roll 3 could be 5-6, still placing them on Community Chest.

Player 2, turn 1, roll 1 would then be 1-3, ending their turn.

Not correct. Per official rules, you can buy houses and hotels at any time *except* during another player’s turn. So, anytime during your own turn or in between the turns of other players.

HOUSES… When you own all the properties in a color-group you
may buy houses from the Bank and erect them on those properties.
If you buy one house, you may put it on any one of those
properties. The next house you buy must be erected on one of the
unimproved properties of this or any other complete color-group you
may own.
The price you must pay the Bank for each house is shown on your
Title Deed card for the property on which you erect the house.
The owner still collects double rent from an opponent who lands on
the unimproved properties of his/her complete color-group.
Following the above rules, you may buy and erect at any time as
many houses as your judgement and financial standing will allow.

Hey guys! Monopoly nerd here…just wanted to mention that I’m thinking of developing a series of blog posts on Monopoly statistics and strategy (and maybe even eventually a book).

To help generate these numbers and probabilities, I am also working on a Monopoly simulator. Hopefully it will eventually be able to help solve some of the more interesting problems we have come up with. :)

[…] seconds is the shortest time one takes to win at Monopoly as calculated by scatterplot. All it takes is two players, four turns, nine rolls of the dice and a little luck. This is just a […]

[…] long all-day Monopoly events (no, I didn’t cheat, but I KNOW he did!). I came across this blog entry and video of the shortest possible Monopoly game (21 seconds) and wanted to share. It’s highly […]

By Interesting Reading #505 – Make perfect french fries, The problem with iPad apps, Freegans, hackers, half-human hybrids, Super-reactors and much more… – The Blogs at HowStuffWorks on June 7, 2010 at 8:19 pm

[…] The Shortest Possible Game of Monopoly: 21 Seconds – “After our recent attempt to play the shortest actual game of Monopoly on record, we started to wonder about what the shortest THEORETICALLY POSSIBLE game of Monopoly would be. That is, if everything went just the right way, with just the right sequence of rolls, Chance and Community Chest cards, and so on, what is the quickest way one player could go bankrupt? After working on the problem for a while, we boiled it down to a 4-turn (2 per player), 9 roll (including doubles) game. Detail on each move given below. If executed quickly enough, this theoretical game can be played in 21 seconds (see video below)…” […]

[…] seconds is the shortest time one takes to win at Monopoly as calculated by scatterplot. All it takes is two players, four turns, nine rolls of the dice and a little luck. This is just a […]

[…] The Shortest Possible Game of Monopoly: 21 Seconds OK, since no one is posting, you get to endure another Monopoly post! After our recent attempt to play the shortest […] […]

[…] 11, 2010 · Leave a Comment 21 seconds. That’s what is considered to be the the shortest theoretically possible game of Monopoly between two players. It can be done in 4 turns (2 per player) and 9 rolls of the […]

[…] La partida más rápida de Monopoly teóricamente posible dura exactamente 4 turnos (2 por jugador) con nueve tiradas de dados, incluyendo dobles. Si se juega en la práctica, puede hacerse en 21 segundos: alguien se ha molestado en calcular pacientemente las jugadas e incluso grabar un vídeo demostrativo. Bonus: la legendaria historia de que el Monopoly fue creado por «hombre hecho a sí mismo, durante la era de la gran depresión es una leyenda urbana. […]

[…] So, Web Watch readers, we ask you this question: assuming you play exactly by the listed rules in a standard set of Monopoly, WHAT IS THE SHORTEST AMOUNT OF TIME THAT A MONOPOLY GAME CAN BE PLAYED? […]

[…] 21 seconds. That’s what is considered to be the the shortest theoretically possible game of Monopoly between two players. It can be done in 4 turns (2 per player) and 9 rolls of the […]

[…] the fast way Posted on June 15, 2010 by Saskia I love Monopoly. And this post makes me wish I understood statistics better (or cared more.) And it’s also proof that people […]

[…] our group of friends like to have game nights, I found this very interesting. :] The guys over at Scatterplot, in the linked post by Blue Monster, figured out what the shortest possible monopoly game would […]

[…] game to complete in a timely manner (games often run for several hours). If you’re curious, here’s what just happened in the video above. Share this on TechnoratiStumble upon something good? Share it on StumbleUponShare this on […]

[…] the shortest possible game of Monopoly. While I applaud the players for attempting to play the Shortest game possible. But there’s one major problem, that’s a problem with most Monopoly games. They […]

[…] in what appears to be a 21-second game of Monopoly. Seems impossible, until you read up on the details of the game’s moves. After working on the problem for a while, we boiled it down to a 4-turn (2 per player), 9 roll […]

[…] completed in 21 seconds. Since the game progresses with auctioneer speed, you may want to read the complete play by play. Check out the video after the […]

[…] here) these two pull off the shortest possible game of Monopoly, an awesome 21 seconds. You can go here and look at the technical side of what’s happening on screen. To summarize, 4 rounds (2 per […]

[…] fama de ser un juego muy largo en el que cada partida dura horas y horas. Esto es lo normal, pero teóricamente es posible ganar en 4 turnos (dos por jugador) jugando con dados […]

[…] that I’m a huge game player. I used to hate board games because when I was a kid they sucked. This is the best-possible game of monopoly. Why? Because it only lasts 21 seconds. Do yourself a favor: if you hate boardgames because you […]

[…] a group of college students have taken it upon themselves to figure out the SHORTEST THEORETICAL game of Monopoly. And they’ve boiled it down to a 4-turn (2 per player), 9 roll (including doubles) […]

[…] Given my lack of love for the game of Monopoly, I was delighted to see that DJM over at scatterplot worked out a way to end the game in only four turns: […]

[…] Dan Mykers hat ausgetüftelt wie schnell man eine Runde Monopoly beenden könnte. Er fand heraus, dass lediglich vier Runden dafür notwendig sind, die dazu passenden Spielzüge und Würfelwürfe findet ihr hier. […]

[…] Scatterplot’s Dan Myers decided to orchestrate the feat on video, which you can watch above. It doesn’t do that great a job of demonstrating how the hypothetical game would play out, but, thankfully, Myers has outlined the steps on his blog (using the game’s US edition). Here’s a snippet of the first two turns, so you can get an idea of its improbability: […]

[…] como es previsible, el interlocutor te mira con incredulidad, aprende aquí cuáles serían los movimientos y cartas que tendrían que salir para que una partida terminara […]

[…] como es previsible, el interlocutor te mira con incredulidad, aprende aquí cuáles serían los movimientos y cartas que tendrían que salir para que una partida terminara […]

This blog is not hosted on any university computer and all conceivable disclaimers about the separation of professional employment from personal blogging apply.

## 40 Comments

Hmm. I thought, “Come on, Dan! Clearly this can be shortened.” But, lo, I cannot see how.

I look forward to the shortest possible game of Risk.

LikeLike

Official Monopoly rules:

“If he does not wish to buy the MONOPOLY property it is sold at auction by the Banker to the highest bidder.”

The following properties were landed on and went unpurchased and didn’t go through an auction either (which is a rule violation):

Winning Player:

Electric Company

Illinois Avenue

Baltic Avenue

Loosing Player

Pensylvania Railroad

What the looser purchases is irrelevant since he is destined to go bankrupt anyway…

But the winning player would have either

spent some of his money, and therefore wouldn’t be able to afford the houses to bankrupt player 2

or

they would have had an auction which would have taken up more time.

If you want to be stupid about it… which they already were since the players weren’t buying valid properties… I can legally bankrupt player 2 on his first role, and accomplish it in 5 seconds (I didn’t make a video, but I did it).

Player 1: rolls a 1:2, lands on Baltic avenue, doesn’t want it, declares auction. Player two offers $1450 for it. Player 1 declines, player 2 tosses the cash and gets the card, and now has only $50.

Player 2 roles a 1:1 and lands on community chest “Pay School Tax: $150″ Player 2 bankrupt. Game over… legally.

LikeLike

Several people have pointed out this auctioning thing, but it’s not right. Someone doesn’t HAVE to buy it. All players can refuse to bid. The property goes unsold. We didn’t bid. Auction over. The wild auctioning have been taken up previously as well–and I think that is completely valid. Likewise, someone else pointed out an even shorter, completely legal, strategy on another blog which is that one player just immediately quits! Nothing in the rule preventing that!

LikeLike

One optional rule of monopoly is that no player may purchase properties until passing Go. This is a common rule at my house.

LikeLiked by 2 people

(Although, when you write this up for publication, I think the proper move for Player 2 is to pay the 10% rather than the $200 on Income Tax, even though it isn’t enough to save her/him.)

LikeLike

You are absolutely correct about the income tax. I can’t believe we missed that after everything we went through to get it down to this point. And, while there are obviously other ways to do this in the same number of rolls, I also can’t think of how to get it shorter than this. Risk, Parcheesi, Life, Candyland…the possibilities are endless…

LikeLike

Two things – actually, current Monopoly boards have the income tax as $200 – 10% is not an option. Second, when you land on an unowned property, “none” isn’t a realistic action. If the player who lands on a property chooses to not buy it, the property goes up for auction (if, of course, you’re playing by the rules). While it *is* possible that no one would buy the property, even for a $1, I don’t think it’s very likely. If we’re going to consider unrealistic possibilities, consider this:

Player 1, Turn 1:

Player rolls anything that lands them onto a property. Doesn’t buy it – it auctions. Both players bid until Player 2 bids $1,500. P2 gets the propert.

Player 2, Turn 1:

Player 2 rolls and lands on Income Tax (on a current board) and has to pay $200. Game over.

LikeLike

Very good! I’m definitely going to remember your strategy the next time I want to get out of a Monopoly game quickly!

Using insane auctioning, I think I can do you one better though: Player 1 rolls double 4s–landing on Vermont–declines to buy and auctioning begins. Since you can bid on a property you declined to buy, the auctioning continues and Player 1 ends up buying Vermont for $1500. Then the second roll based on doubles is a 4-5, community chest and its any card where you have to pay. Player 1 is bankrupt and Player 2 never even had a turn!

LikeLike

I also think you can do the same thing without landing on any actual properties, thus eliminating auctioning:

P1: 5-5 Jail, 6-6 Chance, 5-6 Community Chest

P2: 5-5 Jail, 4-3 Comm Chest (pay 150)

LikeLike

@blue monster

You Player 1 bankruptcy isn’t realistic (as unrealistic as this all is). The auctioning doesn’t begin until the landing player opts to *not* buy the property.

Why then, would this player decide to purchase it within the auction process for a much more expensive price.

Although, I guess he could be trying to get it for cheaper (doesn’t buy it, and Player 2 is only willing to risk $1 on the purchase, so Player 1 gets it for $2).

LikeLike

@walesmd – It *is* possible. I’ve let stuff go to auction thinking I could shave a few bucks off when another player decides to drive the price up. Now, it is *unlikely* that the price would get driven up to $1,500… ;)

LikeLike

The hidden assumption here is that the rules are being followed. In my family it was perfectly possible to have games of Monopoly that ran a good deal shorter than 21 seconds given the propensity of some players to steal all your money or turn the board upside down or throw your top hat down the stairs. To be honest I’d always thought the real purpose of Monopoly was not so much to be a proper board game but rather to serve as a focus for sibling conflict.

LikeLike

Indeed. The quickest game I ever played was the one where I caught my brother hiding a couple of $500 bills under his corner of the board before the game even started!

LikeLike

Without insane auctioning, but by allowing P2 to purchase a property, you can do a bit better:

P1,T1

(same as above; 3 turns)

P2,T1

3-4 -> Chance -> Advance to Illinois

Action: Purchase Illinois (-$240, but effective -$120 because of ability to mortgage: total: $1380)

P1,T2

2-2 Park Place, purchase

6-4 Chance (+$200 for passing GO), advance to Boardwalk, purchase property and houses

P2,T2

6-6 Chance

Action: Pay $50 to each player (total $1330)

1-2 Boardwalk; GAME

8 turns instead of the above 9

Cool post.

LikeLike

Brilliant! I doff my cap to you, sir!

LikeLike

Faster perhaps. But less likely. Four and a half times less likely than the 9 move version… (once every 1,184,866,161,131,520.00 trials)

LikeLike

Well, roll #7 is completely irrelevant as long as it’s a double in the 2-2 to 6-6 range; and the Chance card doesn’t matter. I guess that was just icing, because P2 is already low enough on cash before hitting that final chance.

Still, even considering that, it’s less likely.

LikeLike

Here’s another way that takes only 8 moves and two turns per player, and does not require Boardwalk and Park Place. In fact, neither player touches the fourth side of the board. Also, there are no insane auctions, and Player 2 does not get to make any decisions at all about buying property.

Player 1, Turn 1:

1-1 -> Community Chest, Bank Error in Your Favor, collect $200 (Player 1 now at $1700). Doubles, so roll again.

5-3 -> Visiting Jail.

Player 2, Turn 1:

3-1 -> Income Tax, Pay $200 (Player 2 now at $1300, or $1350 if 10% of assets ($150) is allowed as in the older games – it really doesn’t matter).

Player 1, Turn 2:

3-3 -> St. James Place, Buy for $180 (Player 1 now at $1520). Doubles, so roll again.

1-1 -> Tennessee Avenue, Buy for $180 (Player 1 now at $1340). Doubles, so roll again.

3-1 -> Chance, Go Back 3 Spaces -> New York Avenue, Buy for $200 (Player 1 now at $1140).

At the end of his turn, Player 1 puts 4 houses on St. James Place ($400), 3 houses on Tennessee Avenue ($300), and 4 houses on New York Avenue ($400), for a total cost of $1100 (Player 1 now at $40 cash on hand).

Player 2, Turn 2:

6-6 -> St. James Place, with 4 houses is $750 (Player 2 now at $550 or $600, depending on the income tax square). Doubles, so roll again.

2-1 -> New York Avenue, with 4 houses is $800.

GAME.

There are several variations to this sequence of events that ultimately produce the same result. Player 1’s first turn could be land on Community Chest, get Advance to Go Collect $200, then get a 6-4 to visit jail. Or, after obtaining $200 from Community Chest via bank error or going to go, visiting jail could be reached by doubles (4-4 in my original scenario or 5-5 in the alternate scenario). In this case, a 4-2 or 5-1 gets St. James on Player 1’s first turn, and he/she simply buys Tennessee Avenue and New York Avenue via the same rolls and methods as listed above in his/her second turn.

And yes, I spent way too much time figuring this all out. Oh well, I really enjoyed thinking about it – excellent idea for a post!

LikeLike

This is elegant insofar as it gets to the end in 8 moves without requiring any bad decisions either in prospect or retrospect by the losing player.

LikeLike

Gorgeous solution! I love it!

LikeLike

This certainly looks like the most elegant solution. The proviso in all the fast games is that people are actually suicidal: not keeping any capital for further property purchases.

That early in the game it’s unlikely, but in later stages of the game improving your properties in the hope of a windfall is decidedly more prevalent. Especially if you’ve got a few squares that are going to bankrupt you anyway, and there is nothing left to buy except houses.

One interesting tactic is for two players deciding not to build hotels. That can lead to a shortage of houses, blocking those further behind in development from buying any – you have a finite number of houses in the set. Well worth it when you’re against the in-laws.

LikeLike

Thought you might like to know that this is now linked on MetaFilter: http://www.metafilter.com/92602/There-can-be-only-one

LikeLike

Since I’m sure you were curious about the odds of this particular game taking place if we allow one to get, e.g the 7 in P2T2 any which way (one in 6 rolls), and taking chance as 1 in 16, then 1 in 15 (there are 16 chance cards), it’s:

1/36*36*9*16*36*18*36*36*18*6*15. That’s once every 253,899,891,671,040 games. (once in every 250 trillion games or so)

LikeLike

See now, this is the kind of serious, important content that can be derived from something a frivolous as the original post!

LikeLike

So this leads to the question of what is the total probability (_all_ the ways) that P1 could defeat P2 without P2 having any choice in the matter (i.e., without the option to buy any properties, etc.).

Which would be a much harder question to answer.

LikeLike

thank you for the number crunching it makes it seem even more surreal

LikeLike

In addition to the people commenting about the land auction rules above, I also remember a rule that you couldn’t actually buy property until you went around the board once. It could be that this was a house rule, but my memory is telling me otherwise.

LikeLike

To my knowledge, that is an common house rue, but it is not part of the official monopoly rules: http://www.hasbro.com/common/instruct/monins.pdf

LikeLike

Even in your own example, the second roll of player 2, turn 1 is unnecessary. The first roll can be 1-3 instead of 2-2, thereby ending the turn since it isn’t a double. And on player 2’s second turn, s/he can still land on Chance and be directed to Boardwalk.

LikeLike

For more realism in your example, so that no properties go unpurchased: player 1, turn 1, roll 1 could be 5-5, placing them on visiting Jail. Roll 2 could be 6-6, placing them on Chance (doesn’t really matter what card they get as long as it doesn’t move them backwards or cost them too much). Roll 3 could be 5-6, still placing them on Community Chest.

Player 2, turn 1, roll 1 would then be 1-3, ending their turn.

LikeLike

Don’t forget you can only buy houses/hotels at the beginning of your turn; not in the middle of doubles.

LikeLike

Not correct. Per official rules, you can buy houses and hotels at any time *except* during another player’s turn. So, anytime during your own turn or in between the turns of other players.

LikeLike

well, per the rules we’re both wrong http://www.hasbro.com/common/instruct/monins.pdf

HOUSES… When you own all the properties in a color-group you

may buy houses from the Bank and erect them on those properties.

If you buy one house, you may put it on any one of those

properties. The next house you buy must be erected on one of the

unimproved properties of this or any other complete color-group you

may own.

The price you must pay the Bank for each house is shown on your

Title Deed card for the property on which you erect the house.

The owner still collects double rent from an opponent who lands on

the unimproved properties of his/her complete color-group.

Following the above rules, you may buy and erect at any time as

many houses as your judgement and financial standing will allow.

LikeLike

I found a 7-roll solution!

P1:

5,5 -> just visiting

6,6 -> adv to nearest utility (1350)

5,4 -> buy park place (1000)

P2:

3,1 -> income tax (1350)

P1:

1,1 -> buy boardwalk (600)

2,1 -> Bank error +200 (1000)

Three houses on Boardwalk, Two houses on Park Place (0)

P2:

2,1 -> Advanced to Boardwalk (GAME OVER)

I also found a solution involving the light purples in eight rolls (see my blog here on wordpress)!

LikeLike

http://monopolynerd.wordpress.com

LikeLike

Following up on this excellent work by Monopoly Nerds, we came up with a couple of other 7-roll games.

LikeLike

great game that is simply amazing….

http://www.snyxius.com

LikeLike

great post man

LikeLike

Hey guys! Monopoly nerd here…just wanted to mention that I’m thinking of developing a series of blog posts on Monopoly statistics and strategy (and maybe even eventually a book).

To help generate these numbers and probabilities, I am also working on a Monopoly simulator. Hopefully it will eventually be able to help solve some of the more interesting problems we have come up with. :)

Check out my most recent post. It’s just the tip of the ice burg, but it’s a start. http://monopolynerd.wordpress.com

LikeLike

Here’s how to calculate the shortest game of Chutes and ladders http://www.datagenetics.com/blog/november12011/index.html

Here’s Candyland http://www.datagenetics.com/blog/december12011/index.html

Battleship http://www.datagenetics.com/blog/december32011/index.html

Hangman http://www.datagenetics.com/blog/april12012/index.html

LikeLike

## 69 Trackbacks

[…] ►► […]

LikeLike

[…] seconds is the shortest time one takes to win at Monopoly as calculated by scatterplot. All it takes is two players, four turns, nine rolls of the dice and a little luck. This is just a […]

LikeLike

[…] long all-day Monopoly events (no, I didn’t cheat, but I KNOW he did!). I came across this blog entry and video of the shortest possible Monopoly game (21 seconds) and wanted to share. It’s highly […]

LikeLike

[…] Die Erklärung, wie das so schnell gehen kann, habt ihr hier. […]

LikeLike

[…] Via Scatterplot AKPC_IDS += […]

LikeLike

[…] Aus den Kommentaren auf The Shortest Possible Game of Monopoly: 21 Seconds via rivva, Hervorhebung durch […]

LikeLike

[…] The Shortest Possible Game of Monopoly: 21 Seconds – “After our recent attempt to play the shortest actual game of Monopoly on record, we started to wonder about what the shortest THEORETICALLY POSSIBLE game of Monopoly would be. That is, if everything went just the right way, with just the right sequence of rolls, Chance and Community Chest cards, and so on, what is the quickest way one player could go bankrupt? After working on the problem for a while, we boiled it down to a 4-turn (2 per player), 9 roll (including doubles) game. Detail on each move given below. If executed quickly enough, this theoretical game can be played in 21 seconds (see video below)…” […]

LikeLike

[…] euch einfach dieses Video an – ist auf jeden Fall […]

LikeLike

[…] Click here to read the blog post explaining how and why this happened. Share with a Friend: […]

LikeLike

[…] the theoretical shortest possible game of Monopoly, only one Chance card is drawn — and, for that matter, one Community Chest […]

LikeLike

[…] seconds is the shortest time one takes to win at Monopoly as calculated by scatterplot. All it takes is two players, four turns, nine rolls of the dice and a little luck. This is just a […]

LikeLike

[…] "The Shortest Possible Game of Monopoly: 21 Seconds" [scatterplot] (tags: Games) […]

LikeLike

[…] turns out that The Shortest Possible Game of Monopoly is just 21 seconds […]

LikeLike

[…] turns out that The Shortest Possible Game of Monopoly is just 21 seconds […]

LikeLike

[…] The post to which I refer can be found here: https://scatter.wordpress.com/2010/05/30/the-shortest-possible-game-of-monopoly-21-seconds/ […]

LikeLike

[…] The post to which I refer can be found here: https://scatter.wordpress.com/2010/05/30/the-shortest-possible-game-of-monopoly-21-seconds/ […]

LikeLike

[…] The Shortest Possible Game of Monopoly: 21 Seconds OK, since no one is posting, you get to endure another Monopoly post! After our recent attempt to play the shortest […] […]

LikeLike

[…] zeigen uns,wie man es in kürzester Zeit durch spielen kann. und das klappt sogar in echt. Und zwar so […]

LikeLike

[…] possible Monopoly game: 21 seconds. Read the story, before you watch the video; the guys in it seem to be in a hurry. By jimlynch9999, on […]

LikeLike

[…] As far as I know no human has ever completed a game of Monopoly. But it turns out that it is theoretically possible in under a minute […]

LikeLike

[…] 11, 2010 · Leave a Comment 21 seconds. That’s what is considered to be the the shortest theoretically possible game of Monopoly between two players. It can be done in 4 turns (2 per player) and 9 rolls of the […]

LikeLike

[…] La partida más rápida de Monopoly teóricamente posible dura exactamente 4 turnos (2 por jugador) con nueve tiradas de dados, incluyendo dobles. Si se juega en la práctica, puede hacerse en 21 segundos: alguien se ha molestado en calcular pacientemente las jugadas e incluso grabar un vídeo demostrativo. Bonus: la legendaria historia de que el Monopoly fue creado por «hombre hecho a sí mismo, durante la era de la gran depresión es una leyenda urbana. […]

LikeLike

[…] La partida más rápida de Monopoly [ENG] scatter.wordpress.com/2010/05/30/the-shortest-possible-game-… por titodiego hace 2 segundos […]

LikeLike

[…] A game of Monopoly in 21 seconds. […]

LikeLike

[…] So, Web Watch readers, we ask you this question: assuming you play exactly by the listed rules in a standard set of Monopoly, WHAT IS THE SHORTEST AMOUNT OF TIME THAT A MONOPOLY GAME CAN BE PLAYED? […]

LikeLike

[…] 21 seconds. That’s what is considered to be the the shortest theoretically possible game of Monopoly between two players. It can be done in 4 turns (2 per player) and 9 rolls of the […]

LikeLike

[…] the fast way Posted on June 15, 2010 by Saskia I love Monopoly. And this post makes me wish I understood statistics better (or cared more.) And it’s also proof that people […]

LikeLike

[…] our group of friends like to have game nights, I found this very interesting. :] The guys over at Scatterplot, in the linked post by Blue Monster, figured out what the shortest possible monopoly game would […]

LikeLike

[…] The full list of moves can be found over on the Scatterplot website. […]

LikeLike

[…] The Shortest Possible Game of Monopoly: 21 Seconds « scatterplot […]

LikeLike

[…] bad it didn’t go like this: <via […]

LikeLike

[…] game to complete in a timely manner (games often run for several hours). If you’re curious, here’s what just happened in the video above. Share this on TechnoratiStumble upon something good? Share it on StumbleUponShare this on […]

LikeLike

[…] the shortest possible game of Monopoly. While I applaud the players for attempting to play the Shortest game possible. But there’s one major problem, that’s a problem with most Monopoly games. They […]

LikeLike

[…] The Shortest Possible Game of Monopoly – 21 seconds, and there is a YouTube video to prove it. […]

LikeLike

[…] The Shortest Possible Game of Monopoly: 21 Seconds « scatterplot (tags: monopoly humor) # 0 comments […]

LikeLike

[…] so apparently it’s 21 Seconds…weird [via scatterplot] Tagged: board games, monopoly, nuts, records, shortest, Videos, […]

LikeLike

[…] The Shortest Possible Game of Monopoly: 21 Seconds (tags: games boardgame howto humor monopoly strategy time) […]

LikeLike

[…] Und hier alle Spielzüge. […]

LikeLike

[…] For a major geek-out, the turns are listed here. […]

LikeLike

[…] guys actually sat down and planned the whole thing out beforehand and then staged what the theoretical event might look […]

LikeLike

[…] The game moves too fast to process what went on, so they’ve listed all the moves here. […]

LikeLike

[…] guys actually sat down and planned the whole thing out beforehand and then staged what the theoretical event might look […]

LikeLike

[…] You can see the background of the research here. […]

LikeLike

[…] in what appears to be a 21-second game of Monopoly. Seems impossible, until you read up on the details of the game’s moves. After working on the problem for a while, we boiled it down to a 4-turn (2 per player), 9 roll […]

LikeLike

[…] has nothing to do with Ruby. It’s what is believed to be the shortest theoretically possible game of […]

LikeLike

[…] completed in 21 seconds. Since the game progresses with auctioneer speed, you may want to read the complete play by play. Check out the video after the […]

LikeLike

[…] here) these two pull off the shortest possible game of Monopoly, an awesome 21 seconds. You can go here and look at the technical side of what’s happening on screen. To summarize, 4 rounds (2 per […]

LikeLike

[…] fama de ser un juego muy largo en el que cada partida dura horas y horas. Esto es lo normal, pero teóricamente es posible ganar en 4 turnos (dos por jugador) jugando con dados […]

LikeLike

[…] shortest possible game of Monopoly: 21 seconds. Be sure to read through the comments for even more solutions and […]

LikeLike

[…] Psh…we’re pretty sure we can lose Monopoly in fewer than 21 seconds. […]

LikeLike

[…] https://scatter.wordpress.com/2010/05/30/the-shortest-possible-game-of-monopoly-21-seconds/ […]

LikeLike

[…] 30, 2010 https://scatter.wordpress.com/2010/05/30/the-shortest-possible-game-of-monopoly-21-seconds/ Posted by butitsmyonlyline Filed in Uncategorized Leave a Comment […]

LikeLike

[…] The Shortest Possible Game of Monopoly: 21 Seconds Â« scatterplot. window.fbAsyncInit = function() { FB.init({ appId: '170053253026682', status: true, cookie: true, xfbml: true }); }; (function() { var e = document.createElement('script'); e.async = true; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; document.getElementById('fb-root').appendChild(e); }()); […]

LikeLike

[…] that I’m a huge game player. I used to hate board games because when I was a kid they sucked. This is the best-possible game of monopoly. Why? Because it only lasts 21 seconds. Do yourself a favor: if you hate boardgames because you […]

LikeLike

[…] a group of college students have taken it upon themselves to figure out the SHORTEST THEORETICAL game of Monopoly. And they’ve boiled it down to a 4-turn (2 per player), 9 roll (including doubles) […]

LikeLike

[…] scatterplot. Filed Under: 2 | context Tagged With: funny, research […]

LikeLike

[…] Play a shortest fanciful diversion of Monopoly (see how here) […]

LikeLike

[…] Play the shortest theoretical game of Monopoly (see how here) […]

LikeLike

[…] you believe four turns? (And if you don't, make sure you read the comments for even more inspired ideas!)We […]

LikeLike

[…] Given my lack of love for the game of Monopoly, I was delighted to see that DJM over at scatterplot worked out a way to end the game in only four turns: […]

LikeLike

[…] Link -via GeekDad […]

LikeLike

[…] Dan Mykers hat ausgetüftelt wie schnell man eine Runde Monopoly beenden könnte. Er fand heraus, dass lediglich vier Runden dafür notwendig sind, die dazu passenden Spielzüge und Würfelwürfe findet ihr hier. […]

LikeLike

[…] Here is the break down of how the game would work from his website: […]

LikeLike

[…] Scatterplot’s Dan Myers decided to orchestrate the feat on video, which you can watch above. It doesn’t do that great a job of demonstrating how the hypothetical game would play out, but, thankfully, Myers has outlined the steps on his blog (using the game’s US edition). Here’s a snippet of the first two turns, so you can get an idea of its improbability: […]

LikeLike

[…] The shortest game of Monopoly only needs 4 turns. via Facebook https://scatter.wordpress.com/2010/05/30/the-shortest-possible-game-of-monopoly-21-seconds/ […]

LikeLike

[…] como es previsible, el interlocutor te mira con incredulidad, aprende aquí cuáles serían los movimientos y cartas que tendrían que salir para que una partida terminara […]

LikeLike

[…] como es previsible, el interlocutor te mira con incredulidad, aprende aquí cuáles serían los movimientos y cartas que tendrían que salir para que una partida terminara […]

LikeLike

[…] a couple of monopoly aficionados identified what they believe is the the shortest theoretical game of Monopoly possible. Just two turns […]

LikeLike

[…] However if the dice is kind (or unkind) then it can be over in about 21 seconds, as DJM over at scatterplot […]

LikeLike