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Frequently Asked Questions about BlackjackThis is the rec.gambling.blackjack Frequently Asked Questions (FAQ) list. Page last modified: 7-09-95
Table of Contents
Section B: Blackjack Questions
The acronyms that are often used in rec.gambling.blackjack are listed below.
Blackjack Terminology:
Card Counting Terminology
Blackjack is the most popular table game in American casinos, and the abundance of blackjack articles in rec.gambling is a reflection of this popularity. Unlike many other casino games, skillful play in blackjack allows the player to gain a slight advantage over the casino. However, there is no single form of the game that is found in all casinos, and it is often possible to find several slightly different forms of blackjack within the same casino. When playing blackjack, the "correct" strategy to use will depend on the number of card decks used and on the particular "house rules" that are in effect during play. All of these factors combine to make blackjack a very complicated topic. [Note: this question is obsolete now that rec.gambling.blackjack is a separate group. This question will eventually be deleted from the rec.gambling.blackjack FAQ]
Background: Many books have been written that claim that BJ is beatable. Answer: Simulations performed by rec.gamblers show different amounts of potential player advantage in theory in BJ, depending on strategies, exact rules, and playing conditions. These numbers typically approach 1% (an average penny gain for every dollar bet) though in certain particular, ideal circumstances this can get somewhat higher. There is disagreement on the net about how much advantage this translates into in "real-world" casinos, but it's generally believed that players can play with a small, long-run advantage in BJ. The variance is very high in this game, however, which makes the slight advantage in BJ far from a sure thing.
A typical card counter will have an edge of 1.5% or less, depending on the counting system used, the skill of the player, and the particular house rules that the player is fighting against. It is quite unusual to find playing conditions that allow the player to get more than a 2% edge against the house, even against single deck games. The player's edge against multi-deck games is generally less than 1%.
No. The casinos would like you to believe that card counting is illegal, immoral, and fattening, but the fact is that card counters are simply using a greater level of skill than the typical blackjack player. The Nevada courts have ruled that blackjack players are free to use any information that is made available to them, provided that there is no collusion between a player and casino personnel. For example, if a dealer accidentally handles the cards in such a way that a player can see the dealer's hole card, the player can make use of this information without breaking the law.
This depends on where you play. In Atlantic City, where games of skill are not permitted, the casinos are not allowed to ban skillful players. In Nevada, casinos are allowed to refuse service to anyone at any time for any reason. Players are routinely "barred", usually by being asked to leave or by being told that they are welcome to play any game other than blackjack. If you are barred but persist in trying to play, the casino can have you arrested for trespassing.
The following basic strategy is for single deck games without DAS (double-after-splits).
+-- Player's hand
|
| dealer dealer
| |-might bust-||-might stand-|
V 2 3 4 5 6 7 8 9 X A <------- dealer's upcard
---+-------------------------------
XX | S S S S S S S S S S never, ever, ever split
99 | PS PS PS PS PS S PS ps s s split if (d <= 9), except 7
88 | Ps Ps Ps Ps Ps Ph ph ph ph ph always split
77 | ps ps Ps Ps Ps ph h h s h split if (d <= 7), stand against 10
66 | ph ps ps Ps ps h h h h h split if (d <= 6)
55 | DH DH DH DH DH DH DH DH H H never split, treat like hard 10
44 | h H H DH DH H h h h h never split, double against 5, 6
33 | h h Ph PH PH ph h h h h split if (d >= 4) and (d <= 7)
22 | h ph Ph PH PH ph h h h h split if (d >= 3) and (d <= 7)
AA | PH PH PH PD PD PH PH Ph Ph Ph always split
---+-------------------------------
A9 | S S S S S S S S S S always stand
A8 | S S S S *DS S S S S S double against a 6
A7 | S DS DS DS DS S S h h h* double 3-6, hit against 9, 10, A
A6 | DH DH DH DH DH H h h h h double low, hit high
A5 | h h DH DH DH h h h h h \
A4 | h H DH DH DH H h h h h \ double against 4,5,6
A3 | H H DH DH DH H H h h h /
A2 | H H DH DH DH H H h h h /
---+-------------------------------
21 | S S S S S S S S S S always stand
20 | S S S S S S S S S S always stand
19 | S S S S S S S S S S always stand
18 | S S S S S S S s s s always stand
17 | s s s s s s s s s s always stand on HARD 17 or above
16 | s s s s s h h h h h \
15 | s s s s s h h h h h \
14 | s s s s s h h h h h > hit if dealer might stand,
13 | s s s s s h h h h h / stand if dealer might bust
12 | h h s s s h h h h h / (special case against 2, 3)
11 | D D D D D D D D D D always double
10 | D D D D D D D D H H double if (d < 10)
9 | DH DH DH DH DH H H h h h double if dealer might bust
8 | h H H DH DH H h h h h double only against 5, 6
7 | h h h H H h h h h h
6 | h h h H H h h h h h (4-2)
5 | h h h H H h h h h h (3-2)
4 | h h h H H h h h h h (2-2 pair if no more splitting allowed)
---+-------------------------------
S=stand H=hit D=double P=pair(split)
DH= double if allowed, otherwise hit
DS= double if allowed, otherwise stand
[uppercase] = "strong" hand, favorable to player
[lowercase] = "weak" hand, favorable to house
(*) notes:
Playing A7 against dealer's ace:
hitting gains 4.08% if dealer must hit on soft 17
standing gains 0.74% if dealer must stand on soft 17
Playing A8 against dealer's 6:
doubling gains 1.96% if dealer must hit on soft 17
doubling gains 0.03% if dealer must stand on soft 17
(this rule may be ignored to simplify the strategy)
The following basic strategy is for typical Atlantic City rules.
HOUSE RULES:
Cards are dealt from 6 decks.
Dealer must stand on any 17.
Double-down allowed on soft hands.
Pairs may be split only once.
Player may double-down after splitting pairs.
Surrender is not allowed.
Strategy Table
|---might bust---| |---might stand---| <---- dealer possibility
---+----------------------------------------
2 3 4 5 6 7 8 9 X A <---- dealer's up card
---+---------------------------------------- Pairs
XX | S S S S S S S S S S
99 | PS PS PS PS PS S PS ps s s
88 | Ps Ps Ps Ps Ps Ph ph ph ph ph
77 | ps ps Ps Ps Ps ph h h h h
66 | ph ph ps Ps Ps h h h h h
55 | DH DH DH DH DH DH DH DH H H
44 | h H H PH PH H h h h h
33 | ph ph Ph Ph Ph ph h h h h
22 | ph ph Ph Ph PH ph h h h h
AA | PH PH PH PH PDH PH PH Ph Ph Ph
---+---------------------------------------- Soft Hands
AX | S S S S S S S S S S
A9 | S S S S S S S S S S
A8 | S S S S S S S S S S
A7 | S DS DS DS DS S S h h h
A6 | H DH DH DH DH H h h h h
A5 | h H DH DH DH h h h h h
A4 | h H DH DH DH H h h h h
A3 | H H H DH DH H H h h h
A2 | H H H DH DH H H h h h
AA | H H H H DH H H h h h
---+---------------------------------------- Hard Hands
21 | S S S S S S S S S S
20 | S S S S S S S S S S
19 | S S S S S S S S S S
18 | S S S S S S S s s s
17 | s s s s S s s s s s
16 | s s s s s h h h h h
15 | s s s s s h h h h h
14 | s s s s s h h h h h
13 | s s s s s h h h h h
12 | h h s s s h h h h h
11 | DH DH DH DH DH DH DH DH DH H
10 | DH DH DH DH DH DH DH DH H H
9 | H DH DH DH DH H H h h h
8 | h H H H H H h h h h
7 | h h h H H h h h h h
6 | h h h h h h h h h h
5 | h h h h H h h h h h
4 | h h h h H h h h h h
---+----------------------------------------
S=stand H=hit D=double P=split Q=surrender
NOTES:
1) If more than one option is listed,
options to the left are preferred
over options to the right. Options
less favorable than STAND or HIT are
not shown.
2) Use the "Hard Hands" table only
when the other tables do not apply.
3) If splitting Aces is not allowed,
use the "Soft Hands" table.
4) Uppercase options favor the player,
lowercase options favor the house.
The expected gain for basic strategy play depends on the house rules and the number of decks. The following table summarizes the player's expectation for a variety of games. All numbers are in units of percent of initial bet.
<-- number of decks -->
| 1 | 2 | 4 | 6 | 20 | 100 |
----------------+-------+-------+-------+-------+-------+-------+
AC | .1541 -.2228 -.3991 -.4569 -.5368 -.5638 |
AC + LSR | .1761 -.1717 -.3323 -.3843 -.4552 -.4790 |
AC + ESR | .7694 .3952 .2265 .1721 .0968 .0714 |
----------------+-------+-------+-------+-------+-------+-------+
strip | .0409 -.3214 -.4889 -.5437 -.6245 -.6447 |
strip + LSR | .0707 -.2685 -.4239 -.4744 -.5429 -.5659 |
strip + DAS | .1809 -.1795 -.3472 -.4021 -.4779 -.5034 |
strip + ESR | .6511 .2927 .1320 .0801 .0084 -.0157 |
----------------+-------+-------+-------+-------+-------+-------+
vegas |-.1527 -.5257 -.7015 -.7590 -.8445 -.8663 |
vegas + LSR |-.1095 -.4594 -.6221 -.6747 -.7469 -.7713 |
vegas + DAS |-.0103 -.3813 -.5570 -.6146 -.6951 -.7223 |
vegas + ESR | .5403 .1720 .0046 -.0493 -.1245 -.1500 |
----------------+-------+-------+-------+-------+-------+-------+
reno |-.4291 -.7400 -.8906 -.9404 -1.0154 -1.0337 |
reno + LSR |-.3858 -.6737 -.8113 -.8560 -.9178 -.9387 |
reno + DAS |-.3121 -.6176 -.7658 -.8151 -.8840 -.9073 |
reno + ESR | .2639 -.0423 -.1846 -.2307 -.2307 -.3174 |
----------------+-------+-------+-------+-------+-------+-------+
"AC" rules: (typical of Atlantic City)
dealer stands on soft 17
double down on any two cards
double after splits
no resplitting
"strip" rules: (typical of Vegas Strip)
dealer stands on soft 17
double down on any two cards (but not after splits)
"vegas" rules: (typical of Vegas Downtown)
dealer hits soft 17
double down on any two cards (but not after splits)
"reno" rules: (typical of Reno, northern Nevada)
dealer hits soft 17
double down allowed on two card total of 10 or 11 only
DAS = Double After Splitting
LSR = Late Surrender
ESR = Early Surrender (no longer available)
There are some surface differences, such as single and double deck usually being hand-held, while four or more decks are dealt from a shoe, but there are fundamental mathematical differences too. Single deck blackjack is usually better than multiple deck blackjack for card counters, basic strategists, and the clueless. Additional decks make busts less likely, since one can draw to hands like 2,2,2,2,2,2,2,2,2 (for 18) which are improbable/impossible in single deck. Busting less often helps the dealer's hand more than yours, since the dealer is forced by the rigid rules to hit more often than you. Blackjacks are also less frequent, which is bad since you get paid 3 to 2 for those. All in all, multiple decks will cost a basic strategist nearly 0.5% in advantage, which is more than all but the very best package of favorable extra rules will give you. This was an intuitive explanation; a complete mathematically sound (albeit huge) proof can be generated by a combinatorial analysis program. Card counters face the additional problem that the count is less volatile with multiple decks and hence offers less frequent opportunities for large favorable bets. Consider the difference between an urn with 1 black and 1 white marble versus an urn with 100 black and 100 white marbles. Draw half the marbles: what is the probability that all the remaining marbles are white? In the 1 and 1 case, there is a 1 in 2 chance. In the 100 and 100 case, there is only a 1 in 100,891,344,545,564,193,334,812,497,256 chance!
No. It is a common misconception that incorrect plays by the player at third base will "take the dealer's bust card" or "leave the dealer a good card". As long as the shuffle is sufficient to randomize the cards, improper play of other players will be just as likely to help as it is to hurt. However, bad players can cause frustration and anxiety which may increase the likelihood of making mistakes. It is best to avoid the temptation to strangle bad players.
It depends. For basic strategy players, seat position has no significant effect on the player's expected return. For card counters who use strategy variations, it is probably best to sit at third base in order to see as many cards as possible before playing the hand. When playing against a "front loading" dealer, the best seat is whichever seat gives you the best shot at getting a glimpse of the dealer's hole card. When playing at the Rio, the best seat is the one that gives the best view of the cocktail waitresses.
The card counting system described below is an unbalanced 10 count that is 100% accurate for determining when to take insurance. As a general purpose card counting system, it is relatively weak and not particularly recommended, but it illustrates many of the principles behind card counting. This is intended only to give a feel for how card counting is done, and is not recommended for actual practice, although I've used it because of its simplicity. This counting strategy is listed as "Unbalanced 10 Count" in other parts of the FAQ list.
For single deck games: ---------------------------------------------------------------
For N deck games: --------------------------------------------------------------- Notes:The unique feature of this counting method is that it is perfectly accurate for dealing with insurance. When the count is positive, the player has the advantage when taking the insurance bet. When the count is negative, the house has the advantage, so insurance should not be taken. Counting is best done by counting several cards at once. It is easy to practice this counting method in the following way:
This has been answered by rec.gamblers using different approaches. The first approach is to evaluate different systems by simulation. This approach obscures the particular advantages of each system, but it's easy to see how a system will perform in one particular realistic casino playing situation, and not hard to judge the tradeoff between performance and ease of use (see Q/A B18 for more details). The second approach estimates several performance parameters of each system that collectively approximate the system's inherent potential. This allows the strengths of different BJ systems to be studied in detail, which should allow better, more precise comparison of different systems and aid efforts to improve a particular system. This approach gives results which may be used to determine which counting system is theoretically most profitable, but does not address the issue of how easy it is to use the counting system under actual playing conditions (see Q/A B19 for more details). It's not yet clear how these two studies relate, and no rec.gambling.blackjack consensus has emerged as to how the more sophisticated performance parameters actually translate to advantage at the tables as in the simulations.
Background: Lots of systems are available. There is an important tradeoff between complexity and theoretical power, as more complex systems are harder to use and more error-prone. Answer: You pick 'em. A rec.gambling.blackjack study was accomplished that compared different systems, and here a summary of what came out: Complexity is a subjective measure with guidelines described in the results paper. Power is the integer closest to p/0.05%, where p is the % advantage of the strategy one-on-one in a single deck, dealer hits on soft 17, no DDAS, resplitting-allowed game that's dealt down to 20 cards and using a 1-4 betting spread. 15,000,000 hands guarantee correctness to within 1 point 99% of the time.
name complex power card weights reference
A 2 3 4 5 6 7 8 9 X
--------------------------------------------------------------------------
BASIC 0 -5 Steve Jacobs
UNBALANCED 10 2 13 1 1 1 1 1 1 1 1 1 -2 Steve Jacobs
SUPER-SIMPLE OPT-I 2.5 16 1 1 1 1 -1 WGBJB (1)
REVERE PM 3.5 16 -1 1 1 1 1 1 -1 PBaaB
RED SEVEN 3.5 19 -1 1 1 1 1 1 R:1 -1 BiB
OPT1-6+6 5 18 1 1 1 1 -1 WGBJB
WONG HIGH-LOW 5 19 -1 1 1 1 1 1 -1 PB
ZEN 5 19 -1 1 1 2 2 2 1 -2 BiB
HORSESHOE 6 14 1 2 2 3 2 2 1 -1 -3 MDB (2)
REVERE POINT COUNT 6 17 -2 1 2 2 2 2 1 -2 PBaaB
OPT1-6+6 W/ ACE 7 23 1 1 1 1 -1 WGBJB
ANDERSEN 9.5 16 -2 1 1 1 2 1 1 -1 -1 TtToLV
USTON APC 10 22 1 2 2 3 2 2 1 -1 -3 MDB
WGBJB: "World's Greatest BlackJack Book" by Humble and Cooper
PBaaB: "Playing Blackjack as a Business" by Lawrence Revere
BiB: "Blackbelt in Blackjack" by Arnold Snyder
PB: "Professional Blackjack" by Stanford Wong
TtToLV: "Turning the Tables on Las Vegas" by Ian Andersen
MDB: "Million Dollar Blackjack" by Ken Uston
(1) with modifications by 'thunk'
(2) with modifications by Paul C. Kim
The playing efficiency, betting correlation, and insurance correlation is listed below for several counting systems. These numbers give an indication of the effectiveness of the counting system. When two numbers are listed, the second number results from adding an ace side count in addition to the "main" count. See answer B3 for definitions of "betting correlation", "playing efficiency", and "insurance correlation".
EXPLANATION OF COUNTING SYSTEMS
===========================================================================
COUNTING COUNTING VALUES "BEST" EFFICIENCY CORRELATION
SYSTEMS 2 3 4 5 6 7 8 9 X A SOURCE PLAY+ace BET+ace INSURE
-------- ---------------------------- ------ -------- -------- ------
Griffin 0 0 1 1 1 1 0 0 -1 0 Griffin 64-64+ .85-.95 .85
Hi-Opt I 0 1 1 1 1 0 0 0 -1 0 Humble 61-63 .88-.97 .85
Hi-Opt II 1 1 2 2 1 1 0 0 -2 0 Humble 67-67+ .91-.99 .91
High-Low 1 1 1 1 1 0 0 0 -1 -1 Wong 51-63 .97 .76-.85
Ita 1 1 1 1 1 1 0 -1 -1 -1 Sys.Res. 53-63+ .96 .69-.76
Red 7's 1 1 1 1 1 ** 0 0 -1 -1 Snyder 54-64+ .98 .78-.87
Unbal 10's 1 1 1 1 1 1 1 1 -2 1 Roberts 61-61+ .73-.94 1.00
Uston +- 0 1 1 1 1 1 0 0 -1 -1 Uston 55-64+ .95 .76-.85
Uston APC 1 2 2 3 2 2 1 -1 -3 0 Uston 69-69+ .91-.99 .90
Wong Halves 1 2 2 3 2 1 0 -1 -2 -2 Wong 57-67+ .99 .72-.85
Zen 1 1 2 2 2 1 0 0 -2 -1 Snyder 63-67+ .97 .85-.91
** red 7's +1, black 7's 0
Note: Playing efficiencies have a practical maximum of about 0.7.
"Unbal 10's" is short for "Unbalanced 10 Count"
Probably not. Unless the dealer is cheating, the cards will be in a random order after the shuffle. If the player is not counting cards or using other techniques to gain an advantage, it will not matter if there are several rounds or only a single round between shuffles. But, if the dealer if using preferential shuffling, this will hurt the basic strategy players as well as the card counters.
Basic strategy for late surrender in AC multi-deck games is:
If you are the least bit risk-averse, you should also: At some casinos you can surrender your first two cards. You lose half your bet in return for not having to play through the hand. With early surrender, you get back half your bet even if the dealer has blackjack, while with late surrender you lose anyway when the dealer has blackjack.
Multi Action blackjack allows the player to place up to three bets simultaneously on the same blackjack hand. The player is dealt a single hand, and the three bets are played out against the same dealer upcard, but with different "drawn" cards for each bet. Many players feel nervous about hitting stiff hands against a high dealer's upcard (7 or higher), since they will lose all three bets if they bust. However, basic strategy is COMPLETELY UNCHANGED for this game, and the correct strategy is no different than if the player had only a single bet at risk.
Caesar's Tahoe introduced the Over-13 and Under-13 side bets that are allowed at some blackjack tables. These bets are based on the player's total for the first two cards, when aces are counted as one. Over-13 bets win when the player's cards total 14 or higher, while under-13 bets win when the player's cards total 12 or under. Either bet will lose when the player's total is exactly 13. These bets are placed at the same time as the blackjack bet, and usually the side bet can be no larger than the bet on the blackjack hand. Over/under games are usually dealt from a 6 or 8 deck shoe, and the player's first two cards are always dealt face up. Although these are "sucker" bets for basic strategy players, with a house edge of 6% to 10%, special card counting strategies can be used to give the player a significant edge on these bets.
The card weights used for the Over/Under count are as follows: count +1 for Ace, 2, 3, and 4, and count -1 for tens and face cards. The deck becomes favorable for counts of +2 and above, and for counts -4 and below. Over-13 bets should be placed when the count is +3 and above. Under-13 bets should be placed when the count is -4 and below. When playing Over/Under blackjack with this counting scheme, virtually all of the player's profit comes from the over-13 and under-13 side bets. This counting scheme is very poor for playing the blackjack portion of the bet, and will only allow the player to play about even with the house on the blackjack bets. However, the over/under bets can be very profitable if the game has good penetration. A 6-deck over/under game with good penetration can give the player an advantage of 1.5% or more. Single deck over/under games with good penetration (very rare) can give the player an edge of over 4% when using the over/under count. Snyder's "Over/Under Report" discusses the over/under game in detail, and is available from RGE at an outrageous price.
The individual book reviews given below are grouped according to the person doing the review. If you have an opposing view or wish to express another view of any of these books, write your own review and send it to the maintainer of the FAQ list, and it will be included. Reviews of books that are not mentioned here are especially welcome. There are undoubtedly many good books that are not listed here, as well as many terrible books that are not listed here. These reviews are only the opinions of the reviewers, and your mileage may vary. Review by Michael Dalton (as reported by Adbul Jalib M'hall)
Reviews by Edmund Hack:
Reviews by Adbul Jalib M'hall:
Reviews by Steve Jacobs:
RGE Publishing, 414 Santa Clara Avenue, Oakland, CA 94610, (510) 465-6452 Publishes Blackjack Forum, $30/year (4 issues). Call for their very interesting catalog. Includes books, videos, PC based BJ practice programs, analyzers and simulators, and back issues of Blackjack Forum. Current Blackjack News, by Stanford Wong. $95/year (12 issues). Available through RGE. Blackjack Confidential Magazine, 513 Salsbury Road, Cherry Hill, NJ 08034 $99/year (10 issues). Win Magazine, 16760 Stagg St. #213, Van Nuys, CA 91406, (818) 781-9355 Formerly Gambling Times. $36/year (12 issues). Covers all gambling and gaming topics. [Some reports of irregular publishing schedule] The Experts Blackjack Newsletter, Gambling Times Incorporated, 16760 Stagg St. #213, Van Nuys, CA 91406, (818) 781-9355 New, advertised in WIN Magazine. $30/year (6 issues) The International Gamblers' Club Newsletter, P.O. Box 73, Thornhill, Ontario, Canada L3T 3N1 $24/year (4 issues). Founded by Lance Humble. They'll send you a free but dated sample if you write. Mainly BJ but contains some sports betting information. (I wasn't impressed with my sample). Gambler's Book Club, 630 South 11th Street, Box 4115, Las Vegas, NV 89127, (800) 634-6243. Not a newsletter but call for their awesome, awesome, awesome catalog containing not only just about every blackjack book ever written but practically every book ever written on any gambling topic. They also operate a book store at the above address in Las Vegas. [And they have gambling experts (including card counters) working at the store most of the time, willing to answer questions -- Adbul Jalib M'hall] Las Vegas Advisor, Huntington Press, PO Box 28041, Las Vegas, Nevada 89126, (702) 597-1884. $45/year (12 issues) (add $5 for first class delivery). Produced by Anthony Curtis. Lots of information on deals and freebies available in Las Vegas. Sometimes includes valuable coupons or arranges special deals for subscribers. (I have personally more than recouped the cost in actual cash back from coupons for about half year's worth of the subscription. -Hall) Casino Player, 2424 Arctic Ave., Atlantic City, NJ 08401, 609-344-9000. $24/yr, (12 issues). It covers most gambling jurisdictions, with particular attention paid to AC and LV. Articles on all games, by Wong, Caro, Frome, Malmuth, Snyder, and others. It's a full color, slick, well produced magazine, about 60 pages.
Yes. He was found dead in a rented apartment in Paris, France, on September 19, 1987. The cause of death remains undetermined, since an autopsy was not performed and the body was cremated. The local police found no evidence of foul play. Alcohol and drug abuse were strongly suspected by several people who knew Uston intimately. Reference: Stanley Roberts, "A Double Dose of Death", Roberts' Rules (column), _Gambling Times_, Jan./Feb., 1988, pp. 8, 41 That article is the only printed mention that I have seen on Uston's death. Maybe someone else has the citation for the Card Player article? rec.gambling FAQ index
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