Double Down Blackjack Rules. The rules of doubling down can vary from casino to casino. It is always best for you to know the house rules regarding a double down before you sit down to play blackjack. Today, in most casinos, a player is allowed to double down on any two original cards. You can even double down a blackjack in some casinos. Blackjack Challenge AU Question Hello, not sure if been asked but for anyone familiar with blackjack challenge in Australia at Treasury, Star etc. I have a few questions regarding the validity of the basic strategy from TheWizardOfOdds.
Blackjack Conditions in Australia
Editor Note: This page is for historical purposes only. Last update1999.
Known for his outspokenness, impassioned live show and Outlaw Country tunes, Aaron Lewis is back with a new album, the Buddy Cannon-produced STATE I'M IN (The Valory Music Co.). Lewis wrote six of the 10 tracks, which also features cuts by acclaimed songwriters Dan Tyminski and the late Keith Whitley, among others. Aaron lewis casino. Those that purchased tickets at Seneca Niagara Resort & Casino in 8 Clans or at Seneca Allegany Resort & Casino in The Logo Shop will have to wait for their refunds to be processed once the resort retail outlets are reopened. Aaron Lewis is one of the most compelling performers and story tellers in music today.
By Mike Van Emmerik
See also my general Blackjack Notes, Australian Casinos, and BlackjackTournaments in Australia.
[Cut straight to the table]
In Australia, all casinos deal cards face up, and Double After Splits(DAS) isoffered. The dealer stands on soft 17 (S17). Surrenderis not offered.
In the following table, DOA means Double On Any two cards. D9means thatdoubling is permitted on totals of 9, 10, or 11 only. If D9is in force, you may double onAce-8 and Ace-9, but these are treated ashard 9 and hard 10 respectively (so if youreceive a 2 to Ace-8 you have11, not 21). D10 means doubling is allowed on hard 10and 11 only.
OBO stands for Original Bets Only, and is equivalent to 'nohole card',because on doubled or split bets, when the dealer has blackjack,the player loses his/herOriginal Bet Only. OBBO stands for Originaland Busted Bets only. This is anexpediancy measure - busted split handsdon't have to be kept to see if the dealer will getblackjack. I estimatethat this will cost 15% of the benefit of OBO for splits, but ofcoursedoubles are more common than splits, and they never bust. So OBBO has almostthe sameadvantage as OBO.
2 splits means the ability to split twice, for a total of 3hands.
RSA means the ability to resplit aces; some casinos do not allowyou to do anythingwith a pair of aces other than split them and take onecard on each.
O/U means the Over/Under13 side bet.
House Edge is the approximate advantage in percent that thecasino has over a playerwho plays perfect Basic Strategy (the correctstrategy varies with the house rules). Theedge is based on the followingfigures, fromTheory ofBlackjack.The figures are relative to 'Las Vegas Strip Rules', whichironically arealmost impossible to find these days, especially at the Las Vegas Strip.Theyare in terms of house edge, so positive figures are in the casino'sfavour. These figuresare not rigorous, because of the dependency of onerule to another.
In previous versions of this table, I did not include the -0.02% factorfor Las VegasStrip rules. This is because my simulation results (and theyagreed with simulation expertsfrom around the world) agreed that the resultfor this is closer to zero, but I include ithere to make the results consistant(i.e. all figures are now from Theoryof Blackjack, adjusted for 6 decks whereappropriate).
Regular Blackjack | ||
|---|---|---|
Strip rules | -.02% | |
6 decks | +.60% | |
8 decks | +.64% | |
DAS | -.14% | -.12% if no resplit |
No non-ace resplits | +.04% | |
No soft double (D9) | +.09% | +.13% for single deck |
| -.07% | ||
No OBO | +.13% | |
| +.01% | (estimated) |
Figures for double exposure are from BlackjackSecrets.'Multideck' is a sort of catchall that respresents a basefor standard doubleexposure rules, including S17.
Double Exposure | |
Multideck | +.5% |
Resplits | -.3% |
D10 | +1.3% |
Naturals pay 3:2 | -2.3% |
Example: Crown Casino regular blackjack. We start with -.02%, and add -.14%for DAS.Working left to right in the table below, we add +.64% for 8 decks,+0.09% for no softdouble, +.01% for OBBO, no penalty for resplits, nobonus for RSA, and this adds up to0.58%. Rather average; they used tobe the best in Australia. No Australian casinos aregreat by world standards;most authorities suggest that games with a casino edge worse than0.5%are not worth playing.
If anyone has update information for this table, please emailme .
| Casino | City | #deck main | #deck VIP | Dbl | OBO | Splits | RSA | House Edge | Comments |
|---|---|---|---|---|---|---|---|---|---|
| Adelaide | Adelaide | 8 | 8 | D9 | No | 2 | No | 0.70% | |
| Burswood | Perth | 8 | 8 | D9 | No | 3 | Twice | 0.63% | 40 tables; 4 tables multi action; crowded; pen 85% |
| Casino Canberra | Canberra | 6 | 6 | DOA | No | 3 | No | 0.57% | Super SevensTM on most tables |
| Crown | Melbourne | 8 | 8 | D9 | OBBO | 2 | No | 0.58% | About 110 tables. Some with O/U (max $25). Pen 75%,a very few 87%. |
| 8 | 8 | D10 | N/A | 2 | No | 1.5% | Double exposure | ||
| 8 | 8 | D9 | OBBO | 1 | No | 0.62% | Triple action - make 2 or 3wagers | ||
| http://www.wps.com.au/travel/clients/diamond.htm MGM Grand | Darwin | 6 | 6 | DOA | No | 0.61%? | |||
| Jupiters | Gold Coast | 6 | 6 | D9 | OBO | 1 | No | 0.57% | Pen 75-80%. Super SevensTM on sometables |
| Lasseters Hotel Casino | Alice Springs | 6 | 6 | DOA | No | 2 | No | 0.59% | Very small; at times, only one table ($5-$400) open. |
| Launceston Country Club | Launceston | 6 | 4 or 6 | DOA | OBO | 1 | No | 0.48% | Not confirmed for many years |
| The Reef Hotel Casino | Cairns | 6 or 81 (see right) | 6? | D9 | OBO | 1 | No | 0.57% (6D) 0.61% (8D) | 18 decks used, except where Super SevensTMis avaialable (then 6) |
| Sheraton Breakwater | Townsville | 6 | 6 | D9 | OBO | ? | ? | 0.57%? | |
| Star City | Sydney | 8 | 8 | D9 | OBBO | 2 | RSA? | 0.51%? | Non smoking room; crowded |
| Treasury | Brisbane | 6 (upst) | 6 | D9 | OBO | 1 | No | 0.57% | Pen 75-80%. Super SevensTM on sometables |
| 8 (down) | D9 | OBO | 1 | No | 0.61% | ||||
| Wrest Point | Hobart | 8 | 6 | DOA | OBO | 1 | No | 0.52% |
'Danger, Will Robinson!'
Eight Decks at Treasury!
Treasury casino have introduced 8 deck covered shoes downstairs, and atthe $2 trainingtables upstairs. (The latter have a $10 (per box) bettinglimit, and are intended forinstruction only). This adds another .04% tothe already rather high house advantage of.57%, bringing these tablesto .61%. Only Adelaide and Perth have similar or worseconditions (accordingto current information). Dealers claim that they are merely fallingintoline with other casinos, but of course most other casinos with 8 deckshave betterrules (e.g. Star City, Crown).
All tables upstairs remain 6 decks, with similar rules and betting limitsto downstairs.Apparently, patrons are ignorant of the difference, as thereseems to be little differencein popularity of the tables upstairs versesdownstairs. The only saving grace is that SuperSevens (a side bet) isavailable at 3 tables with 8 decks, and this side bet is morefavourablewith 8 decks than with 6.
See also Australian Casinos, and BlackjackTournaments in Australia.
Last Update: 01/24/99 - No longer updated by originalauthor
Copyright ©1995-2017 Spur of the Moment Publishing
Send comments to
Blackjack Review Network | Twitter | Facebook
.png.jpg "Comment Doubler Au Blackjack")
How often will the dealer have a total of 16?
Hunterhill,
Seems like she does every time I bust :-(
If you mean a 2-card 16, then we can calculate the answer. The dealer can have X6, 97, or 88. For a 6D shoe, these probabilities are as follows:
(2*96*24+2*24*24+24*23)/(312*311) = 0.06505070492
Double Down Blackjack Rules. The rules of doubling down can vary from casino to casino. It is always best for you to know the house rules regarding a double down before you sit down to play blackjack. Today, in most casinos, a player is allowed to double down on any two original cards. You can even double down a blackjack in some casinos. Blackjack Challenge AU Question Hello, not sure if been asked but for anyone familiar with blackjack challenge in Australia at Treasury, Star etc. I have a few questions regarding the validity of the basic strategy from TheWizardOfOdds.
Blackjack Conditions in Australia
Editor Note: This page is for historical purposes only. Last update1999.
Known for his outspokenness, impassioned live show and Outlaw Country tunes, Aaron Lewis is back with a new album, the Buddy Cannon-produced STATE I'M IN (The Valory Music Co.). Lewis wrote six of the 10 tracks, which also features cuts by acclaimed songwriters Dan Tyminski and the late Keith Whitley, among others. Aaron lewis casino. Those that purchased tickets at Seneca Niagara Resort & Casino in 8 Clans or at Seneca Allegany Resort & Casino in The Logo Shop will have to wait for their refunds to be processed once the resort retail outlets are reopened. Aaron Lewis is one of the most compelling performers and story tellers in music today.
By Mike Van Emmerik
See also my general Blackjack Notes, Australian Casinos, and BlackjackTournaments in Australia.
[Cut straight to the table]
In Australia, all casinos deal cards face up, and Double After Splits(DAS) isoffered. The dealer stands on soft 17 (S17). Surrenderis not offered.
In the following table, DOA means Double On Any two cards. D9means thatdoubling is permitted on totals of 9, 10, or 11 only. If D9is in force, you may double onAce-8 and Ace-9, but these are treated ashard 9 and hard 10 respectively (so if youreceive a 2 to Ace-8 you have11, not 21). D10 means doubling is allowed on hard 10and 11 only.
OBO stands for Original Bets Only, and is equivalent to 'nohole card',because on doubled or split bets, when the dealer has blackjack,the player loses his/herOriginal Bet Only. OBBO stands for Originaland Busted Bets only. This is anexpediancy measure - busted split handsdon't have to be kept to see if the dealer will getblackjack. I estimatethat this will cost 15% of the benefit of OBO for splits, but ofcoursedoubles are more common than splits, and they never bust. So OBBO has almostthe sameadvantage as OBO.
2 splits means the ability to split twice, for a total of 3hands.
RSA means the ability to resplit aces; some casinos do not allowyou to do anythingwith a pair of aces other than split them and take onecard on each.
O/U means the Over/Under13 side bet.
House Edge is the approximate advantage in percent that thecasino has over a playerwho plays perfect Basic Strategy (the correctstrategy varies with the house rules). Theedge is based on the followingfigures, fromTheory ofBlackjack.The figures are relative to 'Las Vegas Strip Rules', whichironically arealmost impossible to find these days, especially at the Las Vegas Strip.Theyare in terms of house edge, so positive figures are in the casino'sfavour. These figuresare not rigorous, because of the dependency of onerule to another.
In previous versions of this table, I did not include the -0.02% factorfor Las VegasStrip rules. This is because my simulation results (and theyagreed with simulation expertsfrom around the world) agreed that the resultfor this is closer to zero, but I include ithere to make the results consistant(i.e. all figures are now from Theoryof Blackjack, adjusted for 6 decks whereappropriate).
Regular Blackjack | ||
|---|---|---|
Strip rules | -.02% | |
6 decks | +.60% | |
8 decks | +.64% | |
DAS | -.14% | -.12% if no resplit |
No non-ace resplits | +.04% | |
No soft double (D9) | +.09% | +.13% for single deck |
| -.07% | ||
No OBO | +.13% | |
| +.01% | (estimated) |
Figures for double exposure are from BlackjackSecrets.'Multideck' is a sort of catchall that respresents a basefor standard doubleexposure rules, including S17.
Double Exposure | |
Multideck | +.5% |
Resplits | -.3% |
D10 | +1.3% |
Naturals pay 3:2 | -2.3% |
Example: Crown Casino regular blackjack. We start with -.02%, and add -.14%for DAS.Working left to right in the table below, we add +.64% for 8 decks,+0.09% for no softdouble, +.01% for OBBO, no penalty for resplits, nobonus for RSA, and this adds up to0.58%. Rather average; they used tobe the best in Australia. No Australian casinos aregreat by world standards;most authorities suggest that games with a casino edge worse than0.5%are not worth playing.
If anyone has update information for this table, please emailme .
| Casino | City | #deck main | #deck VIP | Dbl | OBO | Splits | RSA | House Edge | Comments |
|---|---|---|---|---|---|---|---|---|---|
| Adelaide | Adelaide | 8 | 8 | D9 | No | 2 | No | 0.70% | |
| Burswood | Perth | 8 | 8 | D9 | No | 3 | Twice | 0.63% | 40 tables; 4 tables multi action; crowded; pen 85% |
| Casino Canberra | Canberra | 6 | 6 | DOA | No | 3 | No | 0.57% | Super SevensTM on most tables |
| Crown | Melbourne | 8 | 8 | D9 | OBBO | 2 | No | 0.58% | About 110 tables. Some with O/U (max $25). Pen 75%,a very few 87%. |
| 8 | 8 | D10 | N/A | 2 | No | 1.5% | Double exposure | ||
| 8 | 8 | D9 | OBBO | 1 | No | 0.62% | Triple action - make 2 or 3wagers | ||
| http://www.wps.com.au/travel/clients/diamond.htm MGM Grand | Darwin | 6 | 6 | DOA | No | 0.61%? | |||
| Jupiters | Gold Coast | 6 | 6 | D9 | OBO | 1 | No | 0.57% | Pen 75-80%. Super SevensTM on sometables |
| Lasseters Hotel Casino | Alice Springs | 6 | 6 | DOA | No | 2 | No | 0.59% | Very small; at times, only one table ($5-$400) open. |
| Launceston Country Club | Launceston | 6 | 4 or 6 | DOA | OBO | 1 | No | 0.48% | Not confirmed for many years |
| The Reef Hotel Casino | Cairns | 6 or 81 (see right) | 6? | D9 | OBO | 1 | No | 0.57% (6D) 0.61% (8D) | 18 decks used, except where Super SevensTMis avaialable (then 6) |
| Sheraton Breakwater | Townsville | 6 | 6 | D9 | OBO | ? | ? | 0.57%? | |
| Star City | Sydney | 8 | 8 | D9 | OBBO | 2 | RSA? | 0.51%? | Non smoking room; crowded |
| Treasury | Brisbane | 6 (upst) | 6 | D9 | OBO | 1 | No | 0.57% | Pen 75-80%. Super SevensTM on sometables |
| 8 (down) | D9 | OBO | 1 | No | 0.61% | ||||
| Wrest Point | Hobart | 8 | 6 | DOA | OBO | 1 | No | 0.52% |
'Danger, Will Robinson!'
Eight Decks at Treasury!
Treasury casino have introduced 8 deck covered shoes downstairs, and atthe $2 trainingtables upstairs. (The latter have a $10 (per box) bettinglimit, and are intended forinstruction only). This adds another .04% tothe already rather high house advantage of.57%, bringing these tablesto .61%. Only Adelaide and Perth have similar or worseconditions (accordingto current information). Dealers claim that they are merely fallingintoline with other casinos, but of course most other casinos with 8 deckshave betterrules (e.g. Star City, Crown).
All tables upstairs remain 6 decks, with similar rules and betting limitsto downstairs.Apparently, patrons are ignorant of the difference, as thereseems to be little differencein popularity of the tables upstairs versesdownstairs. The only saving grace is that SuperSevens (a side bet) isavailable at 3 tables with 8 decks, and this side bet is morefavourablewith 8 decks than with 6.
See also Australian Casinos, and BlackjackTournaments in Australia.
Last Update: 01/24/99 - No longer updated by originalauthor
Copyright ©1995-2017 Spur of the Moment Publishing
Send comments to
Blackjack Review Network | Twitter | Facebook
How often will the dealer have a total of 16?
Hunterhill,
Seems like she does every time I bust :-(
If you mean a 2-card 16, then we can calculate the answer. The dealer can have X6, 97, or 88. For a 6D shoe, these probabilities are as follows:
(2*96*24+2*24*24+24*23)/(312*311) = 0.06505070492
Thus, the dealer gets a 2-card 16 about 6.5% of the rounds.
Comment Doubler Au Blackjack No Deposit
The terms in the numerator represent the number of combinations of X6, 97, and 88, respectively. The 2's in the first two terms are present because the dealer can draw X6 or 6X (either order) and 97 or 79 (either order), the 96 is the total number of X's in the 6D shoe, the 24's are the total number of 6's, 7's, 8's, and 9's in the 6D shoe, and the 23 is the number of 8's left after the dealer gets the first 8. The denominator is the number of 2-card combinations in a 6D shoe.Comment Doubler Au Blackjack Slot Machine
Hope this helps!Dog Hand
Comment Doubler Au Blackjack Poker
After searching more I found the Wizard analysed this.
Thanks Doghand,actually its 16 with any number of cards.
After searching more I found the Wizard analysed this.
Comment Doubler Au Blackjack Jeux
And the Answer is . . . . ???
Or, at least provide the link, please.
Hunterhill, the op, is referring to the BJ variant Double Up Blackjack: see
https://wizardofodds.com/games/double-up-blackjack/
In particular, the Bonus 16 sidebet available with Double Up Blackjack. This sidebet has already been analyzed here at WoV: see this thread:
https://wizardofvegas.com/forum/questions-and-answers/math/29660-new-side-bet-need-odds-math-please/1/
In the end, assuming H17 (but Stand on 16, since the dealer stands on ALL 16's), the dealer gets a 16 on 14.03% of the rounds.
Hope this helps!
Dog Hand
