Placeholder Image

Subtitles section Play video

  • The following content is provided under a Creative

  • Commons license.

  • Your support will help MIT OpenCourseWare

  • continue to offer high quality educational resources for free.

  • To make a donation or to view additional materials

  • from hundreds of MIT courses, visit MIT OpenCourseWare

  • at ocw.mit.edu.

  • KEVIN DESMOND: All right, everyone.

  • So welcome to 15.S50, Poker Theory and Analytics.

  • So this is going to be Monday, Wednesday, Friday

  • from 3:30 to 5:00.

  • I just got a room for a review session on Tuesday,

  • Thursday for anyone who needs to catch up a little bit.

  • The class is here, 4370.

  • I'm Kevin Desmond.

  • I'm going to be the instructor.

  • Paul Mende is the faculty advisor.

  • And this is worth three H credits.

  • The game play aspect-- so this is what I did.

  • And I think this is really cool.

  • So Poker Stars gave us our own private league for only MIT

  • people in this course.

  • And my goal here is to separate people

  • who are fairly new from people who are very competitive,

  • because I don't want someone not to pass the course because they

  • happen to be not that great at poker.

  • So I created this thing called the Beginners' League.

  • And these are going to be Daily Turbos.

  • Turbos means they're fast-ish tournaments.

  • And to get the game play credit, you can cash,

  • you can make money in one of them,

  • or you can play in 10 of them.

  • So those who are struggling can get this game play credit

  • by playing 10 tournaments, which is about a 10-hour commitment.

  • Let's go into the game play aspect more.

  • So Poker Stars created this private league for us,

  • which is really cool.

  • So Poker Stars is generally considered the most reputable

  • online poker site.

  • That's why we use them.

  • So they have two different types of games.

  • So they have real money and play money games.

  • Now if you're in the US, you can't do real money.

  • It used to be something that was very gray area.

  • And then there was one poker site which turned out

  • to be legitimately like a Ponzi scheme, and as a result,

  • now poker in the US is like much more black and white,

  • definitely not OK for real money.

  • However, their play money scene is pretty resilient,

  • and that's what we're taking advantage of here.

  • The Poker Stars play money scene is broken down

  • into two different things.

  • They have public games, where you can just go and play

  • for play chips against anyone in the world, which is cool.

  • And you can do that, and I recommend

  • you give it a shot just to get used to the software.

  • In addition, you could do home games,

  • which is what we're generally going to be doing.

  • That's what they call their private leagues.

  • So in the private leagues, in their home games,

  • they have this showcase.

  • And you might notice as soon as you log in

  • that the MIT League, Poker Theory and Analytics,

  • is already at the top.

  • That's not just for us.

  • That's for everyone.

  • Anyone in the world who logs into Poker Stars

  • and looks at home games has the MIT League

  • at the top, which I think is really cool.

  • So to access this, I'll send a more specific instructions

  • later.

  • I gave you guys just the passcode of what you need.

  • But to actually get there, what you need to do

  • is, you log into Poker Stars.

  • You go to this button, which is a little house,

  • to access home games.

  • And then you want to join a game.

  • And what you do is, you put the Club ID, which is 557832.

  • You put the invitation code, which you're all

  • going to have on Stellar.

  • And then you put your real name, preferably the one that's

  • listed in the course, because I actually

  • have to approve everyone that joins the league,

  • and I can't do it just based on someone's screen name.

  • And I guess you have to agree to some sort of terms

  • and conditions.

  • So let's talk about hand history.

  • So a lot of analytics are going to be based off

  • of hand histories, which are just text files that Poker

  • Stars gives you to the extent that you indicate that you want

  • to save them down.

  • So these are kind of jumbled messes of text.

  • Each line just shows one thing that happens.

  • And you might get used to reading it,

  • or might not, depending on how much

  • you're going to scrutinize it.

  • But more importantly, you can use

  • these in all the data analytic programs

  • that we're going to use.

  • In particular, Poker Tracker runs off of that.

  • You'll load just thousands of hands into Poker Tracker,

  • and it'll do analytics for you.

  • It knows exactly what's going on based on that format, which is

  • generally considered universal.

  • And then for the sake of visualizing these hands--

  • if you just read it, that's fine.

  • But then if you want to show other people,

  • I'm recommending we use something called the Universal

  • Hand History Replayer, which is something that's free.

  • And what it does, it just reads the hands, and it plays them.

  • It animates what happened as if you were seeing it for real.

  • So the deal with hand histories is,

  • if you're a real money player, Poker Stars dedicates databases

  • of hand histories so that, if you want,

  • you can request all your hand histories at any time.

  • For play money players, they let you capture your own hand

  • histories if you want, but they definitely don't save them.

  • So the reason I'm showing you this now,

  • and I'm going to email it out to you later,

  • is if you lose your hand histories,

  • so you don't capture them in time,

  • you'll never get them back.

  • So make sure you're actually capturing hand histories,

  • because we're going to be using that for a lot of the analysis

  • we do.

  • OK, so let's talk about the league.

  • And honestly, I think this league

  • is going to be really cool.

  • Usually the evolution of a player

  • is they're terrible at poker, and then they

  • start becoming good at playing against bad people.

  • And then when they actually start playing for real,

  • they get crushed again because they're

  • used to playing against other bad people.

  • So this will actually hopefully get

  • you used to playing against other people who

  • are playing correctly, which is not something you can commonly

  • learn just from playing around with your friends.

  • In addition through playing in these online leagues,

  • you can collect stats that you could never

  • get from playing live.

  • And I think this is why the live tournament scene is

  • dominated by online pros.

  • It's because no live pro can get as many hands

  • or analyze their play in the way that you can do online.

  • It's not even comparable.

  • So this is given-- even if your whole intention is to only play

  • live the entire rest your life, doing this type of analytics

  • would give you a chance to learn at a much faster rate

  • and learn things that you would never see live.

  • So every week we're going to have a major tournament, which

  • is basically going to be the same structure, maybe

  • a little bit slower, than the ones we do daily,

  • except they're going to have real prizes.

  • So Akuna is giving us, for their first tournament,

  • Beats headphones.

  • And Apple TV, Bose speakers and a lot of gift cards.

  • And then for their second tournament,

  • they're giving us all of those things

  • plus an iPad Air and an iPad Mini.

  • But we're not done yet.

  • Because this class is focused on playing live,

  • we're going to end the class with a live tournament

  • sponsored by Optiver on the 31st, which

  • is the day after the last day of the class.

  • So after the league's over, and after you

  • guys are good at poker, you'll have an opportunity

  • to play each other in a live tournament, where their prize

  • pool is all of the Akuna prizes, plus a PlayStation

  • 4, plus an iPad, plus a Kindle, and plus a GoPro.

  • I want this to reflect the type of things

  • an online, multi-table tournament player would do.

  • How it normally works is, during the week, and basically

  • every single day, there is a uniform amount

  • of tournaments that will just run every single day

  • at the top of the hour.

  • And these pros will just grind those out.

  • They'll get used to the structure.

  • And that's where they'll kind of grind their teeth.

  • And then on the weekends, that's when

  • you get a lot of the square money, a lot of the newer guys

  • who only play poker on the weekend.

  • And those are more gimmicky, idiosyncratic tournaments,

  • but also the highest value.

  • So that's why I'm producing the tournament structure like this,

  • where the bulk of your tournaments

  • will be very similar to each other.

  • But then the tournaments that really matter

  • will be completely different, at least relatively different.

  • So that's why I'm doing that.

  • That'll make you get a feel for what

  • these guys have to go through.

  • So let's talk about turbos.

  • Turbos let you focus on pre-flop decisions, which

  • are the area where I think there is the most

  • to learn among people who are new at poker.

  • Basically, all of your value that you're

  • losing in tournament is from screwing up pre-flop.

  • No one gets that right live because it's really difficult

  • to be able to feel comfortable doing what's generally

  • considered right.

  • And we're going to spend a lot of time on pre-flop.

  • But these turbos encourage you to do that sort of thing,

  • because live is a lot of pre-flop,

  • and you're going to be doing that in the turbos online, too.

  • In addition, no one wants to spend

  • six hours doing a tournament.

  • So I'm making these turbos so you can

  • be in and out in 45 minutes.

  • And then you boot up another tournament,

  • or you can be done with poker for that night.

  • In addition, you have the opportunity--

  • you can play as many tournaments as you want.

  • It's common for pros to do something called multi-tabling

  • which is they'll do multiple tournaments at the same time.

  • For the beginners, I'd probably recommend you just do one.

  • But for the regular league, have at that.

  • you want to do like all four tournaments at the same time,

  • go ahead, to the extent that they overlap

  • with each other a little bit.

  • OK.

  • So that's the end with the prize league.

  • So the schedule is, we're going to go through what

  • I'm calling basic strategy, which

  • are the basic axioms that we're going to be using in order

  • to analyze the decision making process in poker.

  • Then we're going to be doing pre-flop analysis.

  • And we're going to be doing a lot of this, because this

  • is really where the value add is going to be,

  • is getting this right.

  • I think the way that we can tackle

  • this thing is kind of a way I recommend that you

  • learn anything complicated.

  • So we're going to break this down

  • into three different sections.

  • Fundamental concept, practice, which are actually implementing

  • those concepts when you have 10 seconds to make a decision,

  • and then more advanced stuff.

  • With regard to concepts, I'm going

  • to call this the basic framework for decision making.

  • It's being unexploitable.

  • You want to get to the level when you sit down at a table,

  • every pro in the room doesn't turn and go,

  • I want to sit at that guy's table.

  • You want to be a slightly winning player

  • way before you want to become a huge winning player.

  • In order to let you know the type of thing

  • that we're learning, I'm going to label the slides with this,

  • to indicate that this is like a basic concept.

  • Learn this thing before you move on.

  • The advanced stuff is, once you learn

  • how to do things-- which how to do things is pretty broad--

  • we're going to learn minor adjustments that we can do

  • to get quite a bit of extra money,

  • like how to grind out that additional half big blind

  • an hour out of our opponents.

  • So any real deviations from what we normally

  • do, in addition to meta game.

  • Meta game is always fun, like anything

  • not related to the hand to hand decision

  • making process, like table selection,

  • or bankroll management, or deciding

  • whether or not to play.

  • That stuff is really fun, and that's

  • to be indicated by this ace here.

  • OK.

  • So I'm going to label those slides for anything that's

  • considered advanced, and stuff you should only really do

  • when you get the concepts down.

  • And then a lot of this class is going

  • to be focused on practice, which is how to actually implement

  • these concepts on a day to day basis when you're actually

  • playing, especially live.

  • We are not going to have all the information.

  • We're not going to have calculators,

  • and we're not going to have that much time to make a decision.

  • So how to apply these in real time, making rules of thumb,

  • figuring out what you can just ignore

  • and what you have to definitely do,

  • and then some the psychology stuff related

  • to actually performing live is going

  • to be what I'm calling practice, which

  • is going to be indicated by that poker chip with a P in it.

  • Let's talk about what I'm bringing to the table here.

  • So this course is primarily going

  • to be from my perspective.

  • And the decisions about what I'm going to teach you here,

  • and the value calls I'm making, is

  • going to come from what I consider the appropriate way

  • for someone to play poker.

  • So my background is that I was an online multi-table

  • tournament grinder, not because I was a great pro,

  • but because I sat more than I played.

  • I was definitely a person who did not

  • play every single tournament.

  • I told you the World Series of Poker

  • has like 25 different tournaments.

  • 10 are Texas Hold'em.

  • And then they have an Omaha tournament, and a horse

  • tournament, which is a combination of five

  • different games.

  • And what is common is that any pro who plays one

  • plays them all.

  • I consider that ridiculous for someone who's actually

  • interested in making any sort of money or career playing poker.

  • So I'm definitely someone who prefers identifying

  • value and monetizing it.

  • So anyway, that's the perspective

  • that I'm going to be teaching this course from.

  • I like ROI.

  • It's a great efficiency metric.

  • Usually you try to maximize your ROI up until the point

  • where it's below some sort of hourly

  • that you set for yourself, because one

  • of the ways you supplement ROI is by moving down in stakes.

  • Usually lower stakes are easier games.

  • You should have a higher win rate.

  • But that win rate's multiplied by a much lower number.

  • So usually you're going to move around in stakes until you have

  • a good ROI, but hopefully above what you consider your lowest

  • amount that you can feel comfortable earning.

  • In addition, I want to focus on live tournaments

  • because who knows what's going to happen to online?

  • Whereas I think live tournaments are very social,

  • they're very public.

  • Everyone knows who wins live tournaments.

  • So I'm going to teach in a way such that focuses

  • on these types of values.

  • OK.

  • So let's move on to some of the concepts and tools

  • that we're going to learn.

  • So we're done learning about what we're actually going

  • to be doing during this class.

  • So let's learn a little bit about poker.

  • So first thing is, we're going to be using PokerTracker a lot.

  • So I'm going to email out exactly

  • how to install this thing.

  • PokerTracker has donated 115 licenses

  • to their product for us.

  • And then our next lesson, on Wednesday,

  • is going to be Joel Fried teaching us

  • how to use this thing and going through some of the analytics.

  • So one other thing that I like using

  • is the Universal Replayer.

  • And what this thing does is it just visualizes hand histories.

  • So you'll feed it a hand history in a text file.

  • It animates it.

  • It probably does other things, but it's free.

  • And this thing's been around for a while.

  • I've not even sure if it's supported anymore.

  • But it's a thing that I'm used to.

  • So this is what it looks like.

  • So you give it a hand, and then it

  • reproduces what you might have seen if you actually

  • played that hand.

  • So let's move on to a concept.

  • So stack size.

  • So this might seem fairly simple,

  • but we ought to make sure we're talking about the same thing

  • when we go through this.

  • So your stack size, it's the value

  • of the chips in front of you.

  • So that's fairly normal.

  • But we have this thing called effective stack size, which

  • is what we're usually going to be talking about when we refer

  • to stack, which is the minimum of your stack

  • or the next biggest stack after you.

  • And the way to think about this is

  • the number of chips you could possibly lose in this one hand.

  • That's what your relevant stack size is.

  • And the way you make decisions will depend on your effective

  • stack much more than anything else.

  • So an example of this would be, say

  • you're in a heads up situation where you're the hero here

  • on the small blind.

  • Big blind has, whatever, 300 chips.

  • And you have some amount of chips with queens.

  • So if you have 1,500 chips, and so does

  • he-- say blinds are like 10/20-- you have, what, like 50 times

  • the blinds combined here.

  • So this is a pretty different hand than aces.

  • Why?

  • So say that you raise with queens, and then he raises you.

  • So you raise to 60, he raises you to 200, you raise to 600,

  • and he pushes to 1,500.

  • Your queens are probably not really that good anymore.

  • It matters how many chips you have here.

  • However, if you have 300 chips, you raise with queens,

  • and then he pushes over, you can't fold that.

  • You might as well have aces, and it makes your hands,

  • the way you play hands, materially different.

  • That's why chip size matters in general.

  • When the chip stack is low, you're

  • playing these two hands basically identical.

  • You're saying-- you're just playing this range.

  • However, when we're talking about effective chip stack,

  • it's the same thing, where even if you have 1,500

  • and he has 300, if you raise, he's going to push.

  • You don't have the opportunity to do that back and forth

  • anymore.

  • So you might as well have 300 with regard

  • to your decision making here.

  • That's why we're looking at the effective stack,

  • because it really matters who has the least number of chips,

  • because that determines when the action is going to be over.

  • So really, I like this definition the most,

  • the most amount of chips that you can lose in the hand.

  • It's a lot more, I think, simple to think about

  • than this min formula.

  • OK.

  • And then we're almost always talking about effective stack.

  • Let's talk about Dan Harrington.

  • So Dan Harrington is a player whose style I very much like.

  • His nickname's Action Dan, which the consensus

  • is, he just kind of gave himself, because he's

  • considered Mr. Fundamental, like tight aggressive ABC player.

  • So this playing style, this temperament, tight aggressive,

  • is something that is used to characterize basic playing

  • styles.

  • So let's quickly go through what those are.

  • So there are two different axes here.

  • There's how often you bet, where bet

  • means you are raising the stakes,

  • so either you bet or you raise.

  • And then here's how often you call.

  • Either you call a lot or you call not that much.

  • You can get a good feel for the type of person someone

  • is by what box they fill in.

  • So these have names.

  • So someone who's tight aggressive,

  • you would just refer to them as Tag, which

  • is like what Dan Harrington is.

  • You bet when you have good hands and you

  • fold when you have bad hands.

  • Another possibly winning strategy is loose aggressive,

  • Lag, where you certainly bet when you have good hands,

  • but you will see a lot of cards before you'll

  • give up on a hand.

  • You're definitely willing to call a lot.

  • These, type passive, are not pronounceable words,

  • so the community generally came up with different words

  • to describe these.

  • So a tight passive person is weak.

  • They're someone who you can completely run over,

  • because they fold when they have a bad hand,

  • they check when they have a good hand.

  • I guess they would be called rocks.

  • You never need to worry about having a big losing night

  • against these guys.

  • So someone who's type passive is generally

  • considered playing sub-optionally.

  • And then the loose passive people

  • are described-- this icon, which I forget what it's from.

  • I think it might be from an old version of PokerTracker,

  • or maybe it was on Party Poker or something.

  • But everyone loved seeing this icon which

  • you could label people as, because a loose passive person

  • is what?

  • They are a calling machine.

  • That's what that stands for, and it

  • means that when you have a hand, they

  • will call all of your bets.

  • You will extract value out of them.

  • But when they have a hand, they're

  • OK with letting you look at your draws

  • to make a decision about whether by the river you have a hand

  • or not.

  • There's virtually no way that these guys

  • are making money in poker.

  • I think it would be, like over a realistic sample size,

  • there's no type of player who could fit in this quadrant

  • and be good enough on any other metric to actually

  • be making money in poker.

  • So in general how we look at this is,

  • we would call this Tag guy solid ABC.

  • That's what I'm recommending you guys play as.

  • Tag players, as a quadrant, are going

  • to be the biggest winners.

  • Lag players, someone who's very aggressive

  • and plays a lot of hands, could possibly

  • be a pretty good winner.

  • It depends on the type of game, and then

  • their opponent and their ability to pick spots.

  • But there are a lot of big Lag winners.

  • There are not a lot of big weak winners.

  • And there are not a lot of calling

  • machines, loose passive players, who are not big losers.

  • So anytime you see-- this is a definition of someone who's

  • a complete fish, a huge donater to the game.

  • And your ability to recognize this type of thing

  • will help you find good games to play,

  • when you see someone doing this kind of thing.

  • Anyway, back to Action Dan.

  • So Dan Harrington is a pretty good poker player.

  • He's been around the block.

  • He won the main event back in 1995, when it had,

  • like, 300 people in it.

  • He has two World Series of Poker bracelets and one World Poker

  • Tour title.

  • But anyway, so Harrington popularized

  • this thing called the M-ratio, which

  • was invented by someone else.

  • So the M-ratio was invented by this guy Paul Magriel, who's

  • a backgammon theorist, apparently one of the best

  • backgammon players in the world, commentator for the WSOB,

  • World Series of Backgammon, and eight WSOB final tables.

  • Anyway, so he's supposedly really, really good

  • at math, even by MIT standards.

  • But he invented this thing called the M-ratio,

  • but then it never caught on until Harrington

  • started doing it.

  • All right, so Harrington's M-ratio

  • is your effective stack divided by the sum

  • of the blinds and the empties.

  • So you'll hear people talk about,

  • like, oh, I had 10 big blinds, or 15 big blinds or whatever,

  • to talk about their chip stack.

  • But that has a fundamental problem.

  • It has a lot of different problems.

  • One is, it doesn't tell the story.

  • So the usual blind levels are like 1/2 or 2/4,

  • where the big blind is just twice the small blind.

  • So that's the assumption.

  • But if you're at a blind level that's like 1/3 or 3/5,

  • the number of big blinds you have is not

  • indicative of anything.

  • It's not indicative of how many hands you can see,

  • or how much you care about winning a pot pre-flop.

  • So using the blinds is bad, in addition

  • to, once you start having, like, if you're 50/100 blinds

  • and you have an ante of 25, you have basically half the stack

  • you had before, in realistic terms.

  • Just to get big blinds doesn't, in fact, earn antes at all.

  • And that's a major problem referring to it like that.

  • So using M seems to make a lot more sense.

  • So what it is, is it's basically the percentage of your stack

  • that is the blinds in the ante.

  • So it's like how many rounds of poker

  • you can survive if you just fold every single hand.

  • Of course, you're not going to do that.

  • Although I think that's what he's actually getting at,

  • because he uses M to refer to when you have

  • to make a move, which is not generally how I recommend

  • you do it.

  • I think it's more important, because it means how important

  • the blinds are to your stack.

  • The only reason anyone plays any hand of poker

  • is because someone wants to win the blind.

  • So even if you have kings, to some extent,

  • if you could win the blinds, 99% of the time

  • you would just do that.

  • You don't really all the time want someone

  • to go up against you.

  • So the blinds are really driving the decision making

  • process, at least pre-flop.

  • And the percentage that those blinds

  • are of your stack matter a lot.

  • If they're 1% of your stack, if your M is 100,

  • the blind basically don't matter at all.

  • Whatever happens after the blinds

  • is going to materially impact your decision.

  • Where if your M is 2, and the blinds are half your stack,

  • winning those seems really important.

  • You should do whatever you can to kind of maximize

  • your chance of winning that.

  • So that's why M is a good ratio here.

  • And then, in addition, for tournaments,

  • it makes it much easier to talk about hands

  • without having to worry about all the different parts

  • of the tournament life cycle.

  • If you have 1,500 chips and it's 50/100 blinds,

  • you can basically make the same decisions

  • as if you have 10 times as many chips at a level that's

  • 10 times as high blinds.

  • You could just divide in your head

  • and basically make the same decision.

  • You don't need to worry about doing

  • anything different as a result of having more chips.

  • So Harrington invented or brought up

  • a bunch of other things that never really caught on.

  • He invented a thing called the queue ratio, which

  • is your stack size divided by the average stack size

  • in the tournament.

  • So I guess you might use this to get an idea of how far behind

  • you are in the tournament.

  • Like if your queue is 5, you don't

  • need to be that aggressive.

  • But if your queue is .2, you have

  • a lot of catching up to do before you're realistically

  • going to be anywhere near the money.

  • I don't really make decisions based on that.

  • I think the community doesn't.

  • So it never really caught on for anything.

  • I've never actually heard anyone use that.

  • So he came up with this thing called

  • effective M, which makes sense, if you

  • look at M from his perspective.

  • Effective M, it's your M divided by-- you multiply by how

  • shorthanded your table is.

  • And it gives you the equivalent of the number

  • of 10-handed tables you could survive.

  • It just means that, say you have 10 Ms,

  • you could survive 10 rounds of blinds.

  • If you have three people at your table,

  • you can't survive for another like six hours

  • because you actually pay the blind every other hand.

  • That's what effective M is doing.

  • It reduces your M proportionally.

  • Since he's looking at this from the perspective of when

  • you need to start making moves, it kind of makes sense

  • that your M would be reduced if you're shorthanded.

  • But I look at M from the perspective of how valuable it

  • is in terms of blinds.

  • So I don't really use that.

  • I don't know anyone who really uses effective M either.

  • But he invented them, and maybe they'll catch on eventually.

  • So I think that's going to be done for today.

  • Thanks, everyone, for a good first lecture.

The following content is provided under a Creative

Subtitles and vocabulary

Click the word to look it up Click the word to find further inforamtion about it