100xOdds
100xOdds
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September 2nd, 2026 at 4:40:06 AM permalink
1) Normally flush pays 3:2 for the Blind bet.
If it paid 2:1, the HE is 0.9%.
(Edit: https://wizardofvegas.com/forum/questions-and-answers/gambling/36944-math-of-ultimate-texas-holdem/#post841494 )
What is the element of risk?

2) Progressive: Flop flush or better with 1st 3 cards + your 2 cards
$1 pays flush $100, full house $150, quads $200
(Don't remember straight flush or royal)
What's the house edge?

3) What if Flush pays 3:2 but Royal only pays 100x?
What's the HE?
Edit:
For every 100 the effective payout on a royal goes down, the house edge will go up by 0.308%?

So if the royal payout is $20k instead of $50k then 30k/100 x .308% is 92% lower???
Obviously wrong.
Help with math?
Last edited by: 100xOdds on Sep 2, 2026
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aceside
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September 2nd, 2026 at 5:45:17 AM permalink
1). How do you get the HE of 0.9%? Flush occurs 3.03% of the hands, so the player EV gain is 3.03%x0.5=1.515%; therefore, the new HE is 2.185%-1.515%=0.67%.

2). Usually, $1 pays flush $40, full house $50, quads $300.
100xOdds
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September 2nd, 2026 at 7:16:19 AM permalink
Quote: aceside

1). How do you get the HE of 0.9%? Flush occurs 3.03% of the hands, so the player EV gain is 3.03%x0.5=1.515%; therefore, the new HE is 2.185%-1.515%=0.67%.

2). Usually, $1 pays flush $40, full house $50, quads $300.
link to original post


0.9% HE:
https://wizardofvegas.com/forum/questions-and-answers/gambling/36944-math-of-ultimate-texas-holdem/#post841494

So I should play the $1 Progressive if $100/150/200?
Craps is paradise (Pair of dice). Lets hear it for the SpeedCount Mathletes :)
aceside
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September 2nd, 2026 at 7:23:16 AM permalink
I’d like to get a third opinion on this 0.9% HE number.

The payout numbers of yours are ridiculous high. Of course.
gordonm888
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September 2nd, 2026 at 10:47:49 AM permalink
Quote: aceside

I’d like to get a third opinion on this 0.9% HE number.

The payout numbers of yours are ridiculous high. Of course.
link to original post



A Flush is the outcome on 2.5715% of hands (excluding straight flush and royal flush which don't have a change in payout.)
With an increased payout of 0.5 on a flush hand, the incremental player EV is 1.2857%.

The standard UTH EV is 2.185% with perfect strategy. Thus, the new value of house edge with this payout change on flushes is 2.185% - 1.2857% = 0.899222%

Source: UTH Math on increased payout on flushes See in particular the post by charliepatrick
So many better men, a few of them friends, are dead. And a thousand thousand slimy things live on, and so do I.
aceside
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September 2nd, 2026 at 11:05:42 AM permalink
I see the problem with my calculation. The 3.03% is the total flush hands, while the 2.572% is the player winning flush hands. Thank you.
Last edited by: aceside on Sep 2, 2026
gordonm888
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aceside
September 2nd, 2026 at 12:43:33 PM permalink
Quote: aceside

I see the problem with my calculation. The 3.03% is the total flush hands, while the 2.572% is the player winning flush hands. Thank you.
link to original post



You asked a very intelligent question and I spent a lot of time sweating blood while evaluating everything. here was my explanation before you figured it out yourself.

First, the values in the Wikipedia Poker Probabilities article are correct. The methodology in Wikipedia is poorly documented but I derived the flush probability using my own methods of combination math and I confirm that the 5-card flush combinations with seven cards are 4047664 and the flush probability is 3.0255% - in agreement with Wikipedia.

The Wizard's numbers in the WOO UTH table also appear to be correct. His numbers are the number of player flushes that beat the dealer's hand and receive a payout.

a) The WOO UTH table does not call out instances in which player has a flush but dealer's hole cards include one or two suited cards that allow dealer to make a higher flush than player (or a straight/Royal flush). Those instances are lumped into lines on the WOO UTH table labeled 'Dealer Wins" without calling out what hands the player lost with.

b) Further, there are instances in which the five common cards are all suited (making a flush) and neither the player nor dealer can improve the flush on the board with a card of that suit in their hole cards. So these are when the player has a flush but it is also the identical flush that dealer has. These instances are lumped into rows on the WOO UTH table that are labeled 'Push" without calling out the kind of hand that player had.

The bottom-line: you've been ignoring those instances in which player has made a flush but either loses or pushes. The HE is indeed approximately 0.9% given the rule change on the payout of a winning flush (2:1 rather than 3:2).

EDIT: pwned by aceside.
So many better men, a few of them friends, are dead. And a thousand thousand slimy things live on, and so do I.
aceside
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September 3rd, 2026 at 7:14:24 AM permalink
Quote: 100xOdds


3) What if Flush pays 3:2 but Royal only pays 100x?
What's the HE?


A Royal occurs 0.0032% of the time and normally pays 500:1. If you change the payout to 100:1, the change of house edge is roughly 0.0032%x400=1.28%. Here I assume a player Royal always wins, but this is not the case. I’ve encountered royals within the community five cards several times. The probability of a Royal on the five community cards is 0.000154%. This is as rare as a lifetime event.
100xOdds
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September 3rd, 2026 at 11:14:12 PM permalink
Quote: aceside

Quote: 100xOdds


3) What if Flush pays 3:2 but Royal only pays 100x?
What's the HE?


A Royal occurs 0.0032% of the time and normally pays 500:1. If you change the payout to 100:1, the change of house edge is roughly 0.0032%x400=1.28%. Here I assume a player Royal always wins, but this is not the case. I’ve encountered royals within the community five cards several times. The probability of a Royal on the five community cards is 0.000154%. This is as rare as a lifetime event.
link to original post


Wow.. house edge goes up 1.28% , almost 50% more.

Community Royal happened to me a couple years ago.
Let's see if I can find my pic.
Craps is paradise (Pair of dice). Lets hear it for the SpeedCount Mathletes :)
100xOdds
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September 11th, 2026 at 8:26:08 AM permalink
Quote: gordonm888

Quote: aceside

I’d like to get a third opinion on this 0.9% HE number.

The payout numbers of yours are ridiculous high. Of course.
link to original post



A Flush is the outcome on 2.5715% of hands (excluding straight flush and royal flush which don't have a change in payout.)
With an increased payout of 0.5 on a flush hand, the incremental player EV is 1.2857%.

The standard UTH EV is 2.185% with perfect strategy. Thus, the new value of house edge with this payout change on flushes is 2.185% - 1.2857% = 0.899222%

Source: UTH Math on increased payout on flushes See in particular the post by charliepatrick
link to original post


Hmm..The HE is based on just the ante bet.
If ante+blind, then the HE is only .45%? :o
Craps is paradise (Pair of dice). Lets hear it for the SpeedCount Mathletes :)
aceside
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September 11th, 2026 at 8:31:38 AM permalink
This is perfectly correct.
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