Topic: [ANN] SafeDice.com - 0.5% Variable House Edge (Read 8028 times)

Hi Doog... Thank you for founding those problem!


That's very good observation. It does related to rounding but not exactly because of round down / up problem. It is because the server reject an unavailable payout. Here's our explanation.

• When the user manually set the payout, browser will round the payout to the nearest possible payout (because roll number / win chance is actually a discrete number) after the user is done editing
• With variable H.E. the payout can change in realtime. When the H.E. changed, browser changes the win change according to the user payout.
• However, the payout still remain the same, and those exact payout doesn't always available (remember that roll number is discrete).
• When the user rolls, SD's server check the roll integrity and found that the submitted payout slightly missed, therefore the safety mechanism rejects the roll (our log literally wrote "impossible payout" ).

We have fixed this issue now, the payout will now change to the nearest possible payout automatically when the H.E. changed.



Done! We don't have a bug bounty program, but may reward it in an ad hoc manner. Many thanks for all the reports and suggestions so far Doog


Lol, luckily you won those bet

But wouldn't that will be confusing for the player? It's like integrating test server and real server at the same time.

I found a bug with the site.

I set the payout multiplier to 2, set the stake to 0.01, and started martingaling.

I lost 0.01, lost 0.02, tried to double again (using the 'w' hotkey) but it wouldn't let me bet 0.04.

Pressing 'w' with the stake at 0.02 changed the stake to 0.04 as expected, and changed the chance of winning from 49.75% to 49.662% (that's to be expected, since 0.04 is more than 0.25% of the 11.8 BTC bankroll). When I hit 'h' to roll, nothing happened. I checked the javascript console and saw error messages:

(click to enlarge)



Is there a bug bounty on this site? If so, please credit it to my on-site balance.

Edit: I should mention that I tried changing the chance to 50% and then it let me bet - I had to go quite high before I ended up winning. Then I switched back to 2x again, and the bug happened again as soon as I got up to betting 0.04 BTC on a roll - so this wasn't a random site outage - it's very likely to be related to the specific bet I'm trying to make.

Edit2: I won a bit more and withdrew my balance without any trouble. Then I clicked 'history' and noticed that it only showed a single deposit and a single withdrawal, both from a week ago. It should have shown two of each, since I deposited and withdrew today. Reloading the page fixed it, but I shouldn't have to reload to get the history updated.



Edit3: I think the problem is that when the payout multiplier is fixed, and you calculate the chance from it, you're rounding up instead of down, giving a slightly lower house edge than intended, which the server then rejects. When I'm trying to bet 0.04 to win 2x, the chance is set to 49.662%, but if I put 49.662% in the chance box, the payout is a little under 2x. I ended up editing the chance to 49.661%, the payout went a little over 2x, and it let me bet. I suspect you can fix this by rounding down instead of up when calculating the chance from the payout multiplier.

Edit4: The variable house edge feature works pretty well (other than the error I reported above). Here's a screenshot showing how the site got me betting against a 5% house edge - something I would normally never even consider doing.

this also a good suggestion because there are dice sites that has no faucet but was able to get supportive members

IMO their bankroll is much too small to support a faucet. The max bet for what their bankroll (~11 BTC currently) can support is only a little bit larger then what faucets would give out. Plus you have the issue of the fact that the bankroll is investor funded

An alternate suggestion would be to allow people to play with "play" money that cannot be withdrawn and is kept track of separately then real bitcoin deposited.

We have nothing to remove since we never had it


 

yes they do!!!


it's like your having a few friends over for beers next thing you know theor 70 peeps and all drunk and puke all over house



then crash over night




and they never leave

Do you guys plan to remove the faucet due to that?

This one...

bot users, PD is having problems with them

What controversy is that?

Thank you for the suggestion pure, but there are also lot of controversy about faucet. Currently we are still trying to attract people with features other than faucet.

you should add faucet

it will attract a lot of people!!!

Nov 20, 2014 - Full Variable House Edge is Up! You can play with 0.5% H.E.

• House Edge is changing dynamically according to 'profit on win' compared to site bankroll.
• House Edge for each bet is displayed on the Bet Log.
• Investment feature is removed for new players.
• Chat room now has two size options, normal and smaller one.
• Show number of unread messages on Chat Room button.
• Add connection status info.
• Keyboard shortcut icon now show status and clicking it will enable/disable the shortcut.
• Add loading icon on registration and login.
• All bets log updated faster.

In the next update the house edge will use a floating number, stay tuned guys

Yeah, that explains a lot. I didn't read the previous pages.

Hope this explains 

Someone might have asked this before, but I am wondering this:
Why is the house edge 2% if I want to make a bet of 0.06 @ x2 ?
If I bet 0.15 @x2 the house edge is 3% Why is that?

Nov 19, 2014 - Investment feature will be disabled in the next update
Following our recent discussion with some forum members. We think it is best to close our investment feature until indefinite amount of time. We admit that currently we are still to new for this type of feature and the community just get shocked by the recent cases. Continuing this feature will not only harm our brand, but it might implied that we are insensitive to the recent cases.

• Will you open this feature again?
  We might open the investment feature again in the future when we work with a partner that is trusted both by us and the community, or when we believe we are ready and there are lot of requests of this features.
• I still have investment in my account, what should I do?
  If you still have your investment in your account, you will still be able to use it.
• But will the site be playable?
  We will use our Variable House Edge system, this will allow us to run the site with lower amount of bankroll to a certain limitation. Meanwhile we are looking for a better solution.
• But I really want to invest?
  You will need to contact us privately for this matter.

Thanks for helping to explain Doog