[P50POT] a multi-player mathematical game, played with bitcoin

pfifty

newbie

Activity: 34

Merit: 0

Quote from: pfifty on April 07, 2015, 05:20:48 PM

Announcing https://p50pot.com - a multi-player simple mathematical game, played with bitcoins.

2 months after announcing

Just wanted to share some statistics:

* ~10k unique page views.
* ~5000 rounds with at least one participant.
* ~2200 rounds with at least two participants.
* ~20 rounds with more than 10 participants: 355942, 355714, 355653, 355650, 355656, 355652, 354651, 355705, 356990, 349246, 351183, 355690, 355686, 351215, 355688, 355684, 351179, 356987, 355692, 355744.
* Larger wins to date in rounds: 355652, 355650, 351248, 351215, 355714, 355656.

If anyone interested in any other statistics I will gladly attempt to get it.

Thanks for all participants!

pfifty

newbie

Activity: 34

Merit: 0

Quote from: nikona on April 07, 2015, 05:36:39 PM

Looks like a nice concept, but just a suggestion, might be a good idea to start a few free rounds, just to get people to get a hang of it. Also it seems the main requirement is it requires people on the site to play.

And I have a question about the fees system. It says 1 mbtc every 10 participants. So how is fees taken, say if 4 people play a round, and 6 play the second ? So is 0.0001 taken from each by default ?

Yes, it is 1mBTC per 10 participants per round. This is an exceptionally small fee. Consider https://p50pot.com/round.html?r=351248 for instance. My fee was less than 0.25%. Any other gambling site would take at least 1%.

pfifty

newbie

Activity: 34

Merit: 0

Quote from: jorjito25 on April 08, 2015, 03:16:28 PM

Quote from: pfifty on April 08, 2015, 02:58:54 PM

Imagine each deposit is a book. The larger the deposit, the thicker the book.
Now, imagine we stack all the books back to back. The winner is the book in the middle.
So, if there's a thick book, it is more likely to occupy the center.
Lastly, each round is a different stack and a different winner.

It is pretty simple

Yes but, what is that occupy the center? The center of what?

The center of the stack. The winner is the book at the center of the stack.

Say you have 3 books, A is 400 pages, B is 100 pages and C is 200 pages. When you stack them, it looks like:

AAAABCC

To see who wins, you look at the exact center of the stack, here it is an A. So A is the winner.
It is the winner even though it's the first since it's also thicker and as such it occupies the center position within the stack.

I hope this clears out the uncertainty.

jorjito25

hero member

Activity: 490

Merit: 500

Quote from: pfifty on April 08, 2015, 02:58:54 PM

Quote from: jorjito25 on April 08, 2015, 01:31:09 PM

I cant understand who wins?

Could someone explain to me like I was 3 years old?
Ty!

Imagine each deposit is a book. The larger the deposit, the thicker the book.
Now, imagine we stack all the books back to back. The winner is the book in the middle.
So, if there's a thick book, it is more likely to occupy the center.
Lastly, each round is a different stack and a different winner.

It is pretty simple

Yes but, what is that occupy the center? The center of what?

pfifty

newbie

Activity: 34

Merit: 0

Quote from: jorjito25 on April 08, 2015, 01:31:09 PM

I cant understand who wins?

Could someone explain to me like I was 3 years old?
Ty!

Imagine each deposit is a book. The larger the deposit, the thicker the book.
Now, imagine we stack all the books back to back. The winner is the book in the middle.
So, if there's a thick book, it is more likely to occupy the center.
Lastly, each round is a different stack and a different winner.

It is pretty simple

jorjito25

hero member

Activity: 490

Merit: 500

I cant understand who wins?

Could someone explain to me like I was 3 years old?
Ty!

pfifty

newbie

Activity: 34

Merit: 0

Quote from: pfifty on April 07, 2015, 06:20:46 PM

Quote from: leen93 on April 07, 2015, 06:18:06 PM

when a block is created it takes 2 minutes before something changes on your website, can you change that?
this will cause many people to still make a deposit, waste mining fees etc.

This is good feedback. Thanks you! I will look into this later today.

I have fixed this last evening. Leen93, is your address 199tyGZBogrRBSJ8mE6V9P4pSky6nVrgo8? I want to send you a gratitude bounty for finding this bug.

pfifty

newbie

Activity: 34

Merit: 0

Quote from: leen93 on April 08, 2015, 09:51:05 AM

What happened?
The owner of this website (blockchain.info) has banned your IP address (-***).

this is fun, can't reach my bitcoins Roll Eyes

This is an issue related to blockchain.info and not p50pot.com. If you still can't access your funds, you might want to try using a different IP, e.g. to use your phone or a friend's computer. My understanding is that even when this ban is active, it would not last for a long time.

leen93

sr. member

Activity: 616

Merit: 250

What happened?
The owner of this website (blockchain.info) has banned your IP address (-***).

this is fun, can't reach my bitcoins Roll Eyes

leen93

sr. member

Activity: 616

Merit: 250

Quote from: pfifty on April 08, 2015, 01:55:07 AM

Quote from: leen93 on April 08, 2015, 01:05:54 AM

my winning https://blockchain.info/nl/tx/79fcf91fb79e5d0bbd9d63422ba7335388f0db18e69ebec532baea3a9a6dd141 Grin

This looks like the largest win to date, congratulation leen93 Cool

https://www.biteasy.com/blockchain/transactions/c073a785ebe820e9e4d9af6169f027d11f50df0dca23e941d26fe105bf05a26f

highest profit to date went up Cool

leen93

sr. member

Activity: 616

Merit: 250

nobody wants to play anymore?

30 min no new block

leen93

sr. member

Activity: 616

Merit: 250

no cheating it's surely not, everyone has indeed the same rules
but does someone know how you can choose your transaction id?

pfifty

newbie

Activity: 34

Merit: 0

Quote from: ?? on ??

I have read the rules, but looks like players could cheating easily by send more bitcoin so his old transaction could in the middle & become the winner
Anyway, i have try with 0.004BTC Roll Eyes

I hope i'll win

Thank you for trying my service out

You can participate as many times as you want, even using the same address. Your 4mBTC did not win, but the round is still in progress- you should send more transactions if you want to win.

I am not sure I understand your claim that players can cheat. Since all participants are governed by the same set of rules, and anyone is allowed to send multiple transactions, no one gets an unfair advantage, and hence there can't be any cheating in the usual sense of the word.

pfifty

newbie

Activity: 34

Merit: 0

Quote from: leen93 on April 08, 2015, 01:05:54 AM

my winning https://blockchain.info/nl/tx/79fcf91fb79e5d0bbd9d63422ba7335388f0db18e69ebec532baea3a9a6dd141 Grin

This looks like the largest win to date, congratulation leen93 Cool

leen93

sr. member

Activity: 616

Merit: 250

Quote from: ?? on ??

Quote from: pfifty on April 07, 2015, 11:29:30 PM

Spending all that computing time does not necessarily gives a real advantage.

Wouldn't the dominant strategy be along the lines of "Look at all the transactions you think will make it in, then create a txid that will land you on the median"? But the more iterations you do of that, the harder and harder it becomes to bisect that range. Even after only a small amount of iterations, it could become extremely computationally expensive to find a txid near the median, and then trying to move that mass to change the median could be rather expensive and suboptimal

how do you do that?

leen93

sr. member

Activity: 616

Merit: 250

my winning https://blockchain.info/nl/tx/79fcf91fb79e5d0bbd9d63422ba7335388f0db18e69ebec532baea3a9a6dd141 Grin

pfifty

newbie

Activity: 34

Merit: 0

Quote from: ?? on ??

Quote from: pfifty on April 07, 2015, 11:29:30 PM

Spending all that computing time does not necessarily gives a real advantage.

Wouldn't the dominant strategy be along the lines of "Look at all the transactions you think will make it in, then create a txid that will land you on the median"? But the more iterations you do of that, the harder and harder it becomes to bisect that range. Even after only a small amount of iterations, it could become extremely computationally expensive to find a txid near the median, and then trying to move that mass to change the median could be rather expensive and suboptimal

Since deposit size is capped, any two additional maximal deposits (both on the same side of the current median) are guaranteed to move it.

Rmcdermott927

legendary

Activity: 2268

Merit: 1140

Very cool concept.

pfifty

newbie

Activity: 34

Merit: 0

Quote from: ?? on ??

Fun idea, but most importantly great execution! Bravo.

With a quick script, it's it's extremely easy to "aim" your bet with with creating and discarding hundreds of thousands of transactions -- so that's going to make it pretty difficult for regular players using a normal wallet, who will scatter fire. And correct me if I'm wrong, but lets say I want to "aim" between txid A and B, I am better off not picking any random hash that happens to fall between them, but instead generate a huge set of them, and pick one that lies extremely close to either A or B. That is, so it would be extremely computationally difficult for someone to intersect my bet and A and B. Which would mean, with optimal software the game would favor people who can generate a large amount of tx's/second.

Anyway, love what you've done. Glad to see some fresh thinking on the scene =)

Wow, thanks you so much for the complement!

Your close-to-A idea is interesting, I must confess I did not think of that, but still, an opponent could just as easily send a couple of transactions to shift the balance away from that previous center. Spending all that computing time does not necessarily gives a real advantage.

pfifty

newbie

Activity: 34

Merit: 0

Quote from: bitllionaire on April 07, 2015, 09:30:33 PM

nice match(didn't win) I did what I could,but tournament said the first prize was 10,what does that mean in bitcoin?

All amount are in bitcoin. Which round did you participate in? Was is #351182 by any chance?

Topic: [P50POT] a multi-player mathematical game, played with bitcoin (Read 1354 times)