Bitcoin Forum

I just testing martingale gambling method.

This is my experience:
After 2 days of gambling I collected 1500 Dogecoins
After 3 days of gambling I lost about 2000 Dogecoins

So I lost because, I have 20x negative times in row.
I expected about 18x or 19x.

Anyway, can anybody tell me what is max negative times in row?
Anybody have same expirience?

There is no "max negative" if you are playing games of chance.  You could loss for days without winning.  Everyone has these streaks.  It is part of the game unfortunately.

I hat 22x in a row in the past and IIRC just-dice had a 32 losing streak for martingale.

As PenguinFire said there is no maximum. Its very unlikely to lose 22, 32, 42 or 662 times in a row, but eventually it will happen.

This. You need to be aware of the house edge. Martingale can work if you have a ridiculous bank roll and in the short term but keep playing and you'll lose eventually.

What bank roll did you start with? 1500 or something less? Martingale is dangerous because it can easily suck you in. Once you start you'll feel like you can't lose because you always cover you last bets... that is until you hit that losing streak and you lose your bankroll in seconds.

30 loses in a row is 1 in a billion chance, there are reports of a little bit more but not much more since no one would have enough bankroll to sustain more than 40 loses in a row even if you start with 1 satoshi bet

So how safe would you be by using enough funds to ensure you can do 30 rolls or a little over? I hit a little over 20 losses in a row a few times back when I first got into bitcoin and was using the dice sites. I won quite a bit using martin gale but then kept going and lost so then I quit haha.

There are a lot of threads on this topic if you look around in the gambling section.  In the end, the deal is that the more you play, the more likely you are to approach the long-term expected value for the game you're playing.  Because of house-edge, this is almost always negative.  Gambling is fun but you shouldn't hope to defeat the dice-house by rolling thousands of times.

When gambling on these site's realize they are operating chances are in countries that will host gambling websites, not US and some others that they would have to comply to laws (and probley could not even get open legally).

They are free to set their OWN odds.   So .... no regulation and they set their own odds.  They might be turning it up and down you don't know.

Anyways there is no max you could lose, you could lose it all.  And the house always wins, especially when they program their own rules.

There should be no max negative, just as there are no max positives.  Gambling is gambling, you need to expect to lose. 
Never gamble what you can't afford to lose. 

Read up on gambler's ruin. http://en.wikipedia.org/wiki/Gambler%27s_ruin (http://en.wikipedia.org/wiki/Gambler%27s_ruin)

House edge and the fact that you have a limited bankroll will never make you a winning player in the long run, even if you're using Martingale bets.

Martingale has proven to never work in the long term.

You need about 10 BTC to be able to survive the 30th consecutive loss if you started with 1 satoshi bet. The problem with starting with such a low bettig amount is that you need to bet a lot and i mean A LOT, for example in order to have a profit of 0.01 btc you would need 2 million bets wich is insane

No shit, no strategy works in the long term thats why casinos win, in the short term anything can work as long as you have luck, you could very well start betting and make 30 loses in a row in your first 30 bets

One really shouldn't gamble, just ever. You're playing against 'invoke GetTickCount' from Windows (random number generator), and it's really not the way to go.
Best of luck to you.

I have myself experienced 26 reds in a row while martingaling on 2x. Although it seems impossible that that would happen but it does. Every roll is independent from each other and has the same probability, so you can have 30 reds in a row but that does not mean that 31st roll will be green, it may very well be red again.

That is why it is called gambling and it does depends on your luck. So just play with only the money you can afford to lose and never chase losses.

It's because in normal language we often conflate "impossible" with extremely improbable.  Now, with computers and such that do so many operations per second, we can even find ourselves in these strangely improbable positions.  :)

you can really cover upto 26 lose in a row? that would be a lot even you start with 1 satoshi base bet you would reach yoy .65btc

Doge, base bet 0.001

I am not foolish enough to try martingale with BTC.

Everyone who has a bad gambling problem has to hit bottom before they can begin recovery.  Everyone's bottom is different.  When it hits, it is unforgettable

2000 dogs is only worth no more than 1mbtc, you can try more times may be you can find the rule.

before JD shut down the first time, Doog did some stats on longest losing and winning streak at 49.5%.

I believe loses was as big as 32 in a row, and wins was 19 or 20..  i'm not 100% sure of the stats. its in the old JD thread somewhere.

Remember that this isnt simple 50/50.  at 49.5/50.5, the max loss streaks will be longer than the max win streaks.  (thus you can see the house edge in action, sortof)

Its actually not that much, the 26 bet would be: 0.33554432 BTC wich is not that big (starting with 1 bet satoshi) In total yea it would be around 0.5 but its still not that much, the only problem betting so low is that you need for example, to make 0.01 profit, 2.000.000 bets in total, even with a bot it would take you soo loong that is not worth it.

RIght, that's actually an interesting point, a1choi, the longer the streak you're multiplying out, the more you're going to see that divergence between wins vs. losses multiplied out and getting bigger.  Ie, as you say, you can observe the house edge in action.

See https://bitcointalk.org/index.php?topic=610339.msg7060900#msg7060900 for details of that.

In summary:

The longest winning streak at 49.5% (2x) at Just-Dice is 30 in a row.
The longest losing streak at 49.5% (2x) at Just-Dice is 32 in a row.

Obviously the chance of winning changes things drastically. If you're playing with just 1% chance of winning, it's not unusual to see losing streaks of a few hundred bets in a row.


I'm not sure about 662. That will almost certainly never happen, due to limitations on the amount of energy in the universe, etc.

Consider that you're about as likely to break into a random Bitcoin address (a 160 bit number) by brute force as you are to roll 160 in a row (at 50%). Then consider that to roll 640 in a row means doing that 4 times in a row without any failures in between. Then consider that 662 is even bigger than 640.


Even if you flat bet, or bet 0 on each roll, you still won't see much longer than a losing streak of 30 at 49.5%. It's not because people run out of bankroll (they typically just drop their bet right down and keep playing, just to see when they "would have won". It's because very long streaks are incredibly rare.


All good Bitcoin gambling sites are provably fair. You can check that they aren't cheating. Regulation doesn't stop sites cheating anyway. It just stops them cheating when the regulator is looking.


First off, it's really quite dangerous for the casino to randomize their rolls using something as predictable as a system clock. It's possible someone will be able to exploit it and predict their rolls with enough accuracy to beat the house edge.

And secondly, all decent Bitcoin gambling sites are provably fair. That means they can prove that their rolls are made fairly using techniques like publishing the hash some seed used to generate the roll before you play, so you can check that they committed to your roll before you made it. You'll typically be playing against sha256 or similar rather than a random number generator.


In the analysis I did (linked at the top of this post), the 5 longest winning streaks at 49.5% were four 27's and a 30, while the 5 longest losing streaks at 49.5% were 32, 27, and three 26's. It's interesting that you don't really see the house edge in operation there, in that the winning streaks were longer than the losing streaks "on average". (I know, you can't average streak lengths like that...):

there is no max negative, the odds on winning or losing are the same each time, given that you aren't changing over/under how much you wanna roll.

At 50:50 chance. losses of:
15 in a row happens once every 32,768 bets
16 in a row happens once every 65,536 bets
17 in a row happens once every 131,072 bets
18 in a row happens once every 262,144 bets
19 in a row happens once every 524,288 bets
20 in a row happens once every 1,048,576 bets
21 in a row happens once every 2,097,152 bets
22 in a row happens once every 4,194,304 bets
23 in a row happens once every 8,388,608 bets
24 in a row happens once every 16,777,216 bets
25 in a row happens once every 33,554,432 bets
26 in a row happens once every 67,108,864 bets
27 in a row happens once every 134,217,728 bets
28 in a row happens once every 268,435,456 bets
29 in a row happens once every 536,870,912 bets
30 in a row happens once every 1,073,741,824 bets
...
(on average)

I agree with u.. Like my experience here, i won all my bet for football even a day before madrid vs juve, i won in a small amount for every bet  around 0.01-0.08 btc, but got disaster when i lost almost 2,5 btc on madrid vs juve..

In detail i got 32 winning streak in small amount.
But i got 1 big lost..

So thats why i agree there is no max negative time in row, but the real one is max lost or max win in single time..

So if u said in dice or roullete, there is pure luck on u

imo there is no max negative or else, its just like luck and unluck in gambling, couple weeks ago i win 30k just in dice, an next 2 hour i lose all of that, and next morning i win again 20k with less lose

I have also experienced the same I have got 8 losses in a row and lost all my coins then never gambled again.

ah i totally misremembered the win streak.  the spread is a lot closer than i had originally thought.

i got longest losing streak 23 times in a row on diggit.io and 21 times on rollin.io, these were longest losing streak in my gambling history ever and still not get recover my lose from this stupid losing streak.

This happened to me too just like everyone else who plays dice.Once I got 13 negative in a row and I lost all balance as that time someone told me : someone can get maximum 9 negative in a row and I always was placing bets on base of 9 that formula worked for a while but in the end that happened what was not expected. Then on forum I read that maximum 29 in a row is possible.

20 times red in a row is like nothing, when i was keen on testing martingale i once had 35 reds in a row on 50% possibility to win

If true, you might hold the world record for most losses in a row at 50%.

I don't suppose you have any details to back up your claim?


There's no theoretical limit, it's just that the streaks get increasingly less likely the longer that are. Each time you extend the length of the streak by 1, you almost halve the chance of such a streak happening (assuming you're betting at 49.5%).

So a losing streak of length 9 happens about once every 468 bets on average (at 49.5%),
length 10 happens about once every 927 bets (468 * 2 = 936, so you didn't quite halve the chance, but nearly),
length 20 happens every 859,354 bets,
length 29 happens every 402,300,001 bets,
and length 30 happens every 796,633,667 bets

So if you make a billion bets, you're not unlikely to see a streak of length 30.

If you "only" make a million bets, you're unlilely to see a streak of length 30, but it definitely could still happen. If you're really unlucky it could happen in your first 30 bets.

Maximum 11 negative/red whatever we say came while I was playing mining game.That game changed my style of playing and now I play limited.In gambling anything can appear negative/positive for a large number.There is nothing fixed , I think .

Consecutive losses are not unusual in dice games.
Never martingale in dice games as the amount you gain is little compared to what you can lose potentially.

as i remember the longest losing streak i got on Primedice with 49.50% win chance it was 21 red streak in row and i was using martingale so with that stupid streak my account status got in negative from i was in profit before,

today ay JD 9% 150 losses in a row. then boom a win at 250 clam




tiger is the tiger woods of dice

150 losing streak in a row, my experience is not like that i had only 19 losing streak with 2x payout at rollin but i had overcome this lose and recovered my amount after this.

https://i.imgur.com/okk3ABK.jpg





he has bots playing and when one has 93 losses in a row at 9% he starts betting till he hits. the bot makes smalls bets so 93 losses is only -1 clam. for posying sake i didnt show the first 90 bets

Did you martingale? IF you did don't be surprised. That's actually what cleans out most people these days.

Try learning another strategy and you should be OK.

Thats a nice hit. Seems that the more number of loses in that streak you have the more profit you are likely or will make towards the end. I have actually played with that strategy as well, and had around 150 losses too, and never tried it after. Would be nice to know mathematically how many losses at 10% in a row, will have the chance of having 32 losses at 50% .

whoever has large bankroll takes the other one into it :)

There's no such a thing as max loss streak. It always depends on the payout you play and how long you are rolling at that. The longer you roll, the bigger the streaks will become (both good and bad).

how much big bankroll needed to play at dice but we have to keep in mind that thing losing streak with 2x payout can go up to 30 in a row if got that kind of losing streak with martingale than we can overcome or not? using martingale is always risky where house edge exist.

yes and as i said the person with bigger bankroll can stay longer in martingale !

its simple as that ... explained below

you have 10 BTC and site has 1 btc then start with 0.05 btc bet and most probably u will eat the site's BANKROLL

you have knowledge with 10btc bankroll doing martingale base bet 0.05 you can lost all your balance at 8 losing streak in a row, 10btc not a impressive bankroll to defeat the house edge.

generally speaking, if you have bigger bankroll than the house, you can eventually beat theirs. Your green streak is their red streak. Remember that. If you martingale, its like they martingale too but the other way around

I heard about 32 loses in a row but there is no such a thing as maximum loss streak..

I personally had a worst streak on dogecoins dice testing only, I had 54 in a row...

I sent those coins directly from freedoge.co.in but lost them due to that streak, the coins were just 150 in total, and I was testing the dice with 0.00001 Doge per bet with x2 on loss...

54 at 49.5% is quite a lot.  you probably hold a world record or something special for that streak.


If the site has 1btc bankroll, they they probably only allow max profits of 0.01 per bet (1%)  Thats at a maximum.  At just-dice, you would only be allowed 0.005 max profit (0.5%).  Also, the max bet would also depend on the bankroll size, as the % stays the same.  This would make it more difficult that you will eat away at the sites bankroll too much, even by playing martingale.  But it is still possible to eat a lot of it. (maybe 25-50%?)

it depends on the odds, if its  very low around 30 you should expect 30 loss in a row if u are playing a lot of games

Even though there is no longest streak, getting over 40 losses in a row at 50% is Very much impossible of sorts.
The max number of losses I have heard is around 32. Now consider the number of rolls happening on All the sites, must be Billions, and none of them have seen or atleast reported losses of more than 35 ever happening at 50%.

How big was your bank roll? Thats crazy and the only reason you survived is because you were only betting 1 satoshi. Most don't bet that low.

That's pretty normal and I'm sure many have had the same experience.  The thing to remember is that even though losing a 50/50 bet 20 times in a row seems unlikely... it is very possible and happens routinely if you roll the dice, flip the coin, spin the wheel, kick the... well you get the idea. 

The old saying, quit while you're ahead comes to mind.  Don't expect to play a million tries and not experience the extreme 20+ loss streaks in a 50/50 game because it will happen very soon.

I have better advice. Don't play at all unless you get enjoyment from the thrill of the betting itself. If you're enjoyment comes from seeing your balance rise - you're going to get unhappy at some point as you'll keep gambling (thinking your balance will keep getting bigger) until you actually start losing.

Here's the streak in detail:

thanks. just cut off dust bets in case someone quoted my post. you know making it longer ;)

the best thing is to stop gambling  :D

Well that probably worst luck...but yes martiangle isn't good for long term profit.

@for the master
May I know how to calculate loss if we using martiangle 49.5 % , betting 500 satoshi , my balance BTC 0.01 ?

I've experienced a massive 8 loss streak on 89% win rate on some dice sites.

This was a different streak though... See how the one I posted ends with a +2500 and the other ends with +2350?