Heat On A Blackacj 1 Betting Spread
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Heat On A Blackacj 1 Betting Spread
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I see posts where people discuss this is bad, this is good, 1 to 12, 1 to 8. I understand that bet spreads differ based on rules and how much risk you want to take. I'm a good card counter, I bet more when count is high and less when count is low. But I don't follow any rule on how much i should bet.
So, my casino has 6 deck, min bet there is 10. Can you explain me what exactly 1 to 12 bet spread would mean there in plain English? Any random example would work. Please don't say "it depends", I'm just trying to understand what that means.
Bet spreads are the spread of your betting amounts. So if you’re playing at a $10 minimum table, a “1-12 bet spread” would mean that your minimum bet is $10 and your maximum bet is $120. So when the true count is below a 1, you always bet $10.
The part that actually does “depend” is how much you bet when the true count is at or above a 1. But basically, as the true count gets higher, you bet more, until it is eventually high enough that you’re betting $120/hand.
1-12 is a fairly aggressive bet spread. 1-8 is fairly conservative. That simply refers to the risk you’re taking. The more you vary your bet sizes (aka the more aggressive the bet spread), the more attention you will draw from the floor staff.
So in above example, 1 to 12 bet spread doesn’t really say how much you should bet at , say, tc of 4, right? That’s kinda thing i need to figure out for myself depending on how much risk im willing to take? Is this something legit (regardless of risk taken): at tc 1.5 i do 2xmin bet, at tc 2 - 3xmin bet, at tc 2.5-4xmin bet, and so on until i reach my max bet of 120? Or is there something that bet spread is suggesting to bet on different tc
A 1-12 bet spread in your example using table minimum as your minimum bet:
So, negative counts you’re betting 1 unit, or $10. Your top TC count max bet, if your spread is 1-12, would be $120.
Or just Wong completely out of negative counts and Wong back in at a True +1 or True +2! Cut back on paying that table rent!
$10 minimum so $10 is 1 bet. $20 is 2 bets, $50 is 5 bets. $100 is 10 bets. a 1-10 spread means you are betting $10 at the absolute minimum and $100 max. Also if you are a good counter then it is time to get some structure and learn when to bet 2x 5x 10x etc.. don't just do it by gut. BJ and counting is a game of math, emotion has no place.
Also to consider: your EV will go up if you multi hand, and this for different reasons, one being that your chances of getting a natural 21 compared to the dealer getting one are n/(n+1) where n is your number of hands.
Your 21 pays you 3:2 while the dealer's "pays" him 1:1.
Also if you play with another player at the same table, multi hands means you will benefit more from a positive count shoe.
If you cannot multi hand because the table is full, you are not playing in good conditions.
You might want to look into some of the literature or get CVCX to better understand when you want to bet different amounts. You may be good at counting and get the concepts behind counting, but without a good grasp of when to bet certain amounts you're putting yourself at risk of lowering your expected value and raising your risk of ruin.
What my exact bet spread should be was something I was trying to work out a few years ago too. I can't remember where I read this but someone put it this way:
Putting your bankroll, variance and heat aside, the most profitable bet spread would be to bet nothing when you don't have an edge (below TC of +1 depending on the game) and the table max when you do have the edge.
There are two problems with that: 1. You may not have the bankroll to handle the ups and downs (variance) and 2. They will kick you out.
For variance with respect to your bankroll, that's where Kelly Criterion comes in (google it). That can tell you what you should bet depending on the count and your bankroll so that you don't go bust.
Like someone already mentioned, the CVCX software is a much better way of figuring out your bet spread. You put in what kind of rules you're playing, what you want your spread limits to be (i.e 1-12), your betting unit and your bankroll and it will give you a bet at different counts.
The thing to remember is that your bet at a particular count does not need to be exact. Just don't bet more when you don't have an edge. If your spreads are too conservative, you won't make any money. If they're too aggressive, you might overbet your bankroll or you might get kicked out.
Someone also mentioned spreading to two bets. That's a good idea. Don't quote me on this but it smooths out your variance on those hands by 50% I think.
On a $25 game when I'm not being timid (I have a problem with that) my spread will be something like: $25, $50, 2x$50, 2x$100, 2X$150 and maybe 2x$250 if things are going well and the count is going even higher.
Another thing is that you need a larger spread to beat games with worse rules & penetration. If you find a 2 deck game with a good cut, S17 and surrender (good luck finding that), 1-8 might be enough but you will probably need 1-2 for a 6 deck with 1.75 decks cut off, H17 and no surrender.
The bigger thing here is really that if your bankroll can afford max bets on a TC of +1, you’d have a higher EV playing at higher stakes (and a variable bet spread to compensate).
If you really want to dumb it down, then your bet spread is determined from the top down, not the bottom up. So you set your max bet at 1% of your bankroll and work your way down. If you want to get more scientific then you bet somewhere between 30% to 70% of your advantage. You would never bet more than 70%, since this is full kelly any and more is counterproductive for the purposes of bankroll growth. You could bet less than 30%, if you were particularly risk-averse.
But I don't follow any rule on how much i should bet.
He means he is good at keeping count I guess but a viable AP needs to do all the below to be successful:
Perfect basic strategy + deviations
Perfect at finding and exploiting good conditions
Otherwise, remain a weekend warrior playing red chips, which is fine, you're still a card counter and you're getting mileage. Play rated, enjoy your comps.
Bet spread is kind of sandwich you can find on menu at casino lobby. You can order from the drink server when you are playing blackjack.
Or BET Spread could be a risqué dance move common on the BET channel I guess?
Blackjack Betting Spread Explained 2020
What exactly is a bet spread : blackjack
Blackjack - Wikipedia
In blackjack card counting, how do you play a 1 -12 bet ...
Betting Spread - Bet Spread Blackjack Card Counting...
From Wikipedia, the free encyclopedia
This article is about the gambling game. For the variant of Hearts called Black Jack, see Black Jack (Hearts) . For the shedding-type card game sometimes called Black Jack, see Black Jack (Switch) . For other uses, see Black Jack .
"Doubling Down" redirects here. For the South Park episode, see Doubling Down (South Park) .
^ Parlett, David (1990). A History of Card Games , OUP, Oxford, p. 78. ISBN 0-19-282905-X
^ Scarne, John (1986). Scarne's new complete guide to gambling (Fully rev., expanded, updated ed.). Simon & Schuster . ISBN 978-0671630638 .
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^ Baldwin, Roger R.; Cantey, Wilbert E.; Maisel, Herbert; McDermott, James P. "The Optimum Strategy in Blackjack". Journal of the American Statistical Association . 51 (275): 429–439. doi : 10.2307/2281431 . JSTOR 2281431 .
^ "Blackjack History and Events" . blackjackreview.com . Retrieved May 21, 2017 .
^ Jump up to: a b Taking a hit: New blackjack odds further tilt advantage toward the house by Jeff Haney, Las Vegas Sun , November 13, 2003.
^ "Blackjack Rules - 113 variations" . www.qfit.com .
^ "Modern Blackjack" . www.qfit.com .
^ Jump up to: a b "4-Deck to 8-Deck Blackjack Strategy - Wizard of Odds" . Wizard of Odds Consulting, Inc . Retrieved April 30, 2014 .
^ "The Wizard of Odds" . Fine points of basic strategy in single-deck blackjack . Retrieved December 8, 2006 .
^ "The Wizard of Odds" . Total Dependent and Composition Dependent Basic Strategy in Blackjack . Retrieved December 19, 2006 .
^ "Blackjack - Beating Bonuses" . www.beatingbonuses.com .
^ Jump up to: a b Griffin, Peter (March 1, 1999). The theory of blackjack : the compleat card counter's guide to the casino game of 21 (6th ed.). Huntington Press. ISBN 978-0929712130 .
^ Thorp, Edward O. (1966) Beat The Dealer , Vintage Books, a Division of Random House, ISBN 978-0-394-70310-7 , pp 132–136
^ "State Gambling Laws" . www.gambling-law-us.com . Archived from the original on October 7, 2011 . Retrieved October 26, 2011 .
^ Edward Thorp: A Favorable Strategy for Twenty-One , Proceedings of the National Academy of Sciences of the United States of America, Vol. 47, No. 1, 1961, pp. 110–112, JSTOR , archive of PNAS .
^ "Blackjack in Color" . Shuffle Tracking Counts .
^ The Gambling Times Guide to Blackjack ; Gambling Times Incorporated, Hollywood, CA; 1984; Page 110; ISBN 0-89746-015-4 Shuffle-Tracking An Easy Way to Start
^ Break the Dealer ; by Jerry L. Patterson and Eddie Olsen; Perigee Books; A Division of Penguin Putnam; 1986; ISBN 0-399-51233-0 Shuffle-Tracking; Chapter 6, Page 83
^ Blackjack: A Winner's Handbook ; by Jerry L. Patterson; Perigee Books; A Division of Penguin Putnam; © 1990; ISBN 0-399-51598-4 Shuffle-Tracking; Chapter 4, Page 51
^ "The Wizard of Odds" . Blackjack Side Bets .
^ "Live Casino Comparer" . Blackjack Side Bets Explained - Which One Pays Best? .
Blackjack , formerly also Black Jack and Vingt-Un , is the American member of a global family of banking games known as Twenty-One , whose relatives include the British game of Pontoon and the European game, Vingt-et-Un . [1] It is a comparing card game between one or more players and a dealer, where each player in turn competes against the dealer. Players do not compete against each other. It is played with one or more decks of 52 cards, and is the most widely played casino banking game in the world. [2] : 342
Blackjack's immediate precursor was the English version of twenty-one called Vingt-Un , a game of unknown provenance, but probably of Spanish origin. The first written reference is found in a book by the Spanish author Miguel de Cervantes , most famous for writing Don Quixote . Cervantes was a gambler , and the main characters of his tale " Rinconete y Cortadillo ", from Novelas Ejemplares , are a couple of cheats working in Seville . They are proficient at cheating at veintiuna (Spanish for twenty-one), and state that the object of the game is to reach 21 points without going over and that the ace values 1 or 11. The game is played with the Spanish baraja deck. This short story was written between 1601 and 1602, implying that ventiuna was played in Castile since the beginning of the 17th century or earlier. Later references to this game are found in France and Spain. [3]
The first record of the game in France occurs in 1768 [4] and in Britain during the 1770s and 1780s, but the first rules anywhere appear in Britain in 1800 under the name of Vingt-Un . [5] [6] Twenty-One appeared in the United States in the early 1800s, still known in those days as Vingt-Un . The first rules were an 1825 reprint of the 1800 English rules. [7] [8] English Vingt-Un later developed into an American variant in its own right which was renamed blackjack around 1899. [9]
There is a popular myth that, when Vingt-Un ("Twenty-One") was introduced into the United States in the early 1800s - other sources say during the First World War and still others the 1930s - gambling houses offered bonus payouts to stimulate players' interest. One such bonus was a ten-to-one payout if the player's hand consisted of the ace of spades and a black jack (either the jack of clubs or the jack of spades). This hand was called a "blackjack", and it is claimed that the name stuck to the game even though the ten-to-one bonus was soon withdrawn. French card historian, Thierry Depaulis has recently debunked this story, showing that the name Blackjack was first given to the game of American Vingt-Un by prospectors during the Klondike Gold Rush (1896–99), the bonus being the usual Ace and any 10-point card. Since the term 'blackjack' also refers to the mineral zincblende , which was often associated with gold or silver deposits, he suggests that the mineral name was transferred by prospectors to the top bonus in the game. He was unable to find any historical evidence for a special bonus for having the combination of an Ace with a black Jack. [9]
The first scientific and mathematically sound attempt to devise an optimal blackjack playing strategy was revealed in September 1956. Roger Baldwin, Wilbert Cantey, Herbert Maisel and James McDermott published a paper titled The Optimum Strategy in Blackjack in the Journal of the American Statistical Association. [10] This paper would become the foundation of future sound efforts to beat the game of blackjack. Ed Thorp would use Baldwin's hand calculations to verify the basic strategy and later publish (in 1963) his famous book Beat the Dealer . [11]
Players are each dealt two cards, face up or down depending on the casino and the table. In the U.S., the dealer is also dealt two cards, normally one up (exposed) and one down (hidden). In most other countries, the dealer only receives one card face up. The value of cards two through ten is their pip value (2 through 10). Face cards (Jack, Queen, and King) are all worth ten. Aces can be worth one or eleven. A hand's value is the sum of the card values. Players are allowed to draw additional cards to improve their hands. A hand with an ace valued as 11 is called "soft", meaning that the hand will not bust by taking an additional card. The value of the ace will become one to prevent the hand from exceeding 21. Otherwise, the hand is called "hard".
Once all the players have completed their hands, it is the dealer's turn. The dealer hand will not be completed if all players have either busted or received blackjacks. The dealer then reveals the hidden card and must hit until the cards total up to 17 points. At 17 points or higher the dealer must stay. (At most tables the dealer also hits on a "soft" 17, i.e. a hand containing an ace and one or more other cards totaling six.) You are betting that you have a better hand than the dealer. The better hand is the hand where the sum of the card values is closer to 21 without exceeding 21. The detailed outcome of the hand follows:
Blackjack has over 100 rule variations. Since the 1960s, blackjack has been a high-profile target of advantage players , particularly card counters , who track the profile of cards that have been dealt and adapt their wagers and playing strategies accordingly. In response, casinos have introduced counter-measures that can increase the difficulty of advantage play.
Blackjack has inspired other casino games, including Spanish 21 and pontoon .
At a casino blackjack table, the dealer faces five to seven playing positions from behind a semicircular table. Between one and eight standard 52-card decks are shuffled together. At the beginning of each round, up to three players can place their bets in the "betting box" at each position in play. That is, there could be up to three players at each position at a table in jurisdictions that allow back betting. The player whose bet is at the front of the betting box is deemed to have control over the position, and the dealer will consult the controlling player for playing decisions regarding the hand; the other players of that box are said to "play behind". Any player is usually allowed to control or bet in as many boxes as desired at a single table, but it is prohibited for an individual to play on more than one table at a time or to place multiple bets within a single box. In many U.S. casinos, however, players are limited to playing two or three positions at a table and often only one person is allowed to bet on each position.
The dealer deals cards from their left (the position on the dealer's far left is often referred to as "first base") to their far right ("third base"). Each box is dealt an initial hand of two cards visible to the people playing on it, and often to any other players. The dealer's hand receives its first card face up, and in "hole card" games immediately receives its second card face down (the hole card), which the dealer peeks at but does not reveal unless it makes the dealer's hand a blackjack. Hole card games are sometimes played on tables with a small mirror or electronic sensor that is used to peek securely at the hole card. In European casinos, "no hole card" games are prevalent; the dealer's second card is neither drawn nor consulted until the players have all played their hands.
Cards are dealt either from one or two handheld decks, from a dealer's shoe , or from a shuffling machine . Single cards are dealt to each wagered-on position clockwise from the dealer's left, followed by a single card to the dealer, followed by an additional card to each of the positions in play. The players' initial cards may be dealt face up or face down (more common in single-deck games).
The object of the game from the player's perspective is to win money by creating card totals that are higher than those of the dealer's hand, but do not exceed 21 ("busting"/"breaking"), or alternatively, by "standing" (not taking a card) at any total in the hope that dealer will bust. On their turn, players must choose whether to "hit" (take a card), "stand" (end their turn), "double" (double wager, take a single card and finish), "split" (if the two cards have the same value, separate them to make two hands) or "surrender" (give up a half-bet and retire from the game). Number cards count as their natural value; the jack, queen, and king (also known as "face cards" or "pictures") count as 10; aces are valued as either 1 or 11 according to the player's choice. If the hand value exceeds 21 points, it busts, and all bets on it are immediately forfeit. After all boxes have finished playing, the dealer's hand is resolved by drawing cards until the hand busts or achieves a value of 17 or higher (a dealer total of 17 including an ace valued as 11, also known as a "soft 17", must be drawn to in some games and must stand in others). The dealer never doubles, splits, or surrenders. If the dealer busts, all remaining player hands win. If the dealer does not bust, each remaining bet wins if its hand is higher than the dealer's, and loses if it is lower. If a player receives 21 on the 1st and 2nd card it is considered a "natural" or "blackjack" and the player is paid out immediately unless dealer also has a natural, in which case the hand ties. In the case of a tied score, known as "push" or "standoff", bets are normally returned without adjustment; however, a blackjack beats any hand that is not a blackjack, even one with a value of 21. Wins are paid out at 1:1, or equal to the wager, except for player blackjacks which are traditionally paid at 3:2 (meaning the player receives three dollars for every two bet) or one-and-a-half times the wager. Many casinos today pay blackjacks at less than 3:2 at some tables; for instance, single-deck blackjack tables often pay 6:5 for a blackjack instead of 3:2. [12]
Blackjack games almost always provide a side bet called insurance, which may be played when dealer's upcard is an ace. Additional side bets, such as "Dealer Match" which pays when the player's cards match the dealer's up card, are sometimes available.
After receiving an initial two cards, the player has up to four standard options: "hit", "stand", "double down", or "split". Each option has a corresponding hand signal. Some games give the player a fifth option, "surrender".
Hand signals are used to assist the " eye in the sky ", a person or video camera located above the table and sometimes concealed behind one-way glass . The eye in the sky usually makes a video recording of the table, which helps in resolving disputes and identifying dealer mistakes, and is also used to protect the casino against dealers who steal chips or players who cheat. The recording can further be used to identify advantage players whose activities, while legal, make them undesirable customers. In the event of a disagreement between a player's hand signals and their words, the hand signal takes precedence.
Each hand may normally "hit" as many times as desired so long as the total is not above hard 20. On reaching 21 (including soft 21), the hand is normally required to stand; busting is an irrevocable loss and the players' wagers are immediately forfeited to the house. After a bust or a stand, play proceeds to the next hand clockwise around the table. When the last hand has finished being played, the dealer reveals the hole card, and stands or draws further cards according to the rules of the game for dealer drawing. When the outcome of the dealer's hand is established, any hands with bets remaining on the table are resolved (usually in counterclockwise order): bets on losing hands are forfeited, the bet on a push is left on the table, and winners are paid out.
If the dealer's up card (the card that is showing) is an ace, you are allowed to make an “insurance” bet. This is a side bet that the dealer has a ten-value card as the down card, giving the dealer a Blackjack. The dealer will ask for insurance bets from all players before the first player plays. You make this bet by placing chips equal to a maximum of half of your current bet on the “insurance bar” just above your cards. If the dealer has a ten, the insurance bet pays 2:1. In most casinos, the dealer then peeks at the down card and pays or takes the insurance bet immediately. In other casinos, the payoff waits until the end of the play.
In face-down games, if you are playing more than one hand, you are allowed to look at all of your hands before deciding. This is the only time that you are allowed to look at the second hand before playing the first hand. Using one hand, look at your hands one at a time.
Players with a blackjack may also take insurance, and in taking maximum insurance they will win an amount equal to their main wager. Fully insuring a blackjack against blackjack is thus referred to as "taking even money". There is no difference in results between taking even money and insuring a blackjack.
Insurance bets are expected to lose money in the long run, because the dealer is likely to have a blackjack less than one-third of the time. However the insurance outcome is strongly anti-correlated with that of the main wager, and if the player's priority is to reduce variance , they might choose to make this bet.
The insurance bet is susceptible to advantage play. It is advantageous to make an insurance bet whenever the hole card has more than a one in three chance of being a ten. Card counting techniques can identify such situations.
Note: where changes in the house edge due to changes in the rules are stated in percentage terms, the difference is usually stated here in percentage points , not percentage. That is, if an edge of 10% is reduced to 9%: it is reduced by one percentage point, not reduced by ten percent.
The rules of casino blackjack are generally determined by law or regulation, which establishes certain rule variations allowed at the discretion of the casino. The rule variations of any particular game are generally posted on or near the table. You can ask the dealer if the variations are not clearly posted. Over 100 variations of blackjack have been documented. [13]
As with all casino games, blackjack incorporates a "house edge", a statistical advantage for the casino that is built into the game. This house edge is primarily due to the fact that the player will lose when both the player and dealer bust. However, blackjack players using basic strategy will lose less than 1% of their total wagered amount with average luck, which is a substantially lower house edge than most other casino games. This is not true in games where blackjack pays 6:5 as that rule increases the house edge by about 1.4%. The expected loss rate of players who deviate from basic strategy through poor play will be greater, often much greater.
Surrender, for those games that allow it, is usually not permitted against a dealer blackjack; if the dealer's first card is an ace or ten, the hole card is checked to make sure there is no blackjack before surrender is offered. This rule protocol is consequently known as "late" surrender. The alternative, "early" surrender, gives player the option to surrender before the dealer checks for blackjack, or in a no-hole-card game. Early surrender is much more favorable to the player than late surrender.
For late surrender, however, while it is tempting to opt for surrender on any hand which will probably lose, the correct strategy is to only surrender on the very worst hands, because having even a one in four chance of winning the full bet is better than losing half the bet and pushing the other half, as entailed by surrendering.
In most non-U.S. casinos, a 'no hole card' game is played, meaning that the dealer does not draw nor consult his or her second card until after all players have finished making decisions. With no hole card, it is almost never correct basic strategy to double or split against a dealer ten or ace, since a dealer blackjack will result in the loss of the split and double bets; the only exception is with a pair of aces against a dealer 10, where it is still correct to split. In all other cases, a stand, hit or surrender is called for. For instance, holding 11 against a dealer 10, the correct strategy is to double in a hole card game (where the player knows the dealer's second card is not an ace), but to hit in a no hole card game. The no hole card rule adds approximately 0.11% to the house edge.
The "original bets only" rule variation appearing in certain no hole card games states that if the player's hand loses to a dealer blackjack, only the mandatory initial bet ("original") is forfeited, and all optional bets, meaning doubles and splits, are pushed. "Original bets only" is also known by the acronym OBO; it has the same effect on basic strategy and house edge as reverting to a hole card game. [14]
Each blackjack game has a basic strategy , which prescribes the optimal method of playing any hand against any dealer up-card so that the long-term house advantage (the expected loss of the player) is minimized.
An example of a basic strategy is shown in the table below, which applies to a game with the following specifications: [15]
The bulk of basic strategy is common to all blackjack games, with most rule variations calling for changes in only a few situations. For example, to use the table above on a game with the stand on soft 17 rule (which favors the player, and is typically found only at higher-limit tables today) only 6 cells would need to be changed: hit on 11 vs. A, hit on 15 vs. A, stand on 17 vs. A, stand on A,7 vs. 2, stand on A,8 vs. 6, and split on 8,8 vs. A. Regardless of the specific rule variations, taking insurance or "even money" is never the correct play under basic strategy. [15]
Estimates of the house edge for blackjack games quoted by casinos and gaming regulators are generally based on the assumption that the players follow basic strategy and do not systematically change their bet size.
Most blackjack games have a house edge of between 0.5% and 1%, placing blackjack among the cheapest casino table games from the perspective of the player. Casino promotions such as complimentary match play vouchers or 2:1 blackjack payouts allow the player to acquire an advantage without deviating from basic strategy.
Basic strategy is based upon a player's point total and the dealer's visible card. Players may be able to improve on this decision by considering the precise composition of their hand, not just the point total. For example, players should ordinarily stand when holding 12 against a dealer 4. However, in a single deck game, players should hit if their 12 consists of a 10 and a 2. The presence of a 10 in the player's hand has two consequences: [16]
However, even when basic and composition-dependent strategy lead to different actions, the difference in expected reward is small, and it becomes even smaller with more decks. Using a composition-dependent strategy rather than basic strategy in a single deck game reduces the house edge by 4 in 10,000, which falls to 3 in 100,000 for a six-deck game. [17]
Blackjack has been a high-profile target for advantage players since the 1960s. Advantage play is the attempt to win more using skills such as memory, computation, and observation. These techniques, while generally legal, can be powerful enough to give the player a long-term edge in the game, making them an undesirable customer for the casino and potentially leading to ejection or blacklisting if they are detected. The main techniques of advantage play in blackjack are as follows:
During the course of a blackjack shoe, the dealer exposes the dealt cards. Careful accounting of the exposed cards allows a player to make inferences about the cards which remain to be dealt. These inferences can be used in the following ways:
A card counting system assigns a point score to each rank of card (e.g., 1 point for 2–6, 0 points for 7–9 and −1 point for 10–A). When a card is exposed, a counter adds the score of that card to a running total, the 'count'. A card counter uses this count to make betting and playing decisions according to a table which they have learned. The count starts at 0 for a freshly shuffled deck for "balanced" counting systems. Unbalanced counts are often started at a value which depends on the number of decks used in the game.
Blackjack's house edge is usually between 0.5%–1% when players use basic strategy. [18] Card counting can give the player an edge of up to 2% over the house. [19] : 5
Card counting is most rewarding near the end of a complete shoe when as few as possible cards remain. Single-deck games are therefore particularly advantageous to the card counting player. As a result, casinos are more likely to insist that players do not reveal their cards to one another in single-deck games. In games with more decks of cards, casinos limit penetration by ending the shoe and reshuffling when one or more decks remain undealt. Casinos also sometimes use a shuffling machine to reintroduce the exhausted cards every time a deck has been played.
Card counting is legal and is not considered cheating as long as the counter is not using an external device, [19] : 6–7 but if a casino realizes players are counting, the casino might inform them that they are no longer welcome to play blackjack. Sometimes a casino might ban a card counter from the property. [20]
The use of external devices to help counting cards is illegal in all US states that license blackjack card games. [21]
Techniques other than card counting can swing the advantage of casino blackjack toward the player. All such techniques are based on the value of the cards to the player and the casino as originally conceived by Edward O. Thorp . [22] One technique, mainly applicable in multi-deck games, involves tracking groups of cards (also known as slugs, clumps, or packs) during the play of the shoe, following them through the shuffle, and then playing and betting accordingly when those cards come into play from the new shoe. Shuffle tracking requires excellent eyesight and powers of visual estimation but is more difficult to detect since the player's actions are largely unrelated to the composition of the cards in the shoe. [23]
Arnold Snyder's articles in Blackjack Forum magazine brought shuffle tracking to the general public. His book, The Shuffle Tracker's Cookbook, mathematically analyzed the player edge available from shuffle tracking based on the actual size of the tracked slug. Jerry L. Patterson also developed and published a shuffle-tracking method for tracking favorable clumps of cards and cutting them into play and tracking unfavorable clumps of cards and cutting them out of play. [24] [25] [26]
The player can also gain an advantage by identifying cards from distinctive wear markings on their backs, or by hole carding (observing during the dealing process the front of a card dealt face down). These methods are generally legal although their status in particular jurisdictions may vary.
Many blackjack tables offer a side bet on various outcomes including: [27]
The side wager is typically placed in a designated area next to the box for the main wager. A player wishing to wager on a side bet is usually required to place a wager on blackjack. Some games require that the blackjack wager should equal or exceed any side bet wager. A non-controlling player of a blackjack hand is usually permitted to place a side bet regardless of whether the controlling player does so.
The house edge for side bets is generally far higher than for the blackjack game itself. [28] Nonetheless side bets can be susceptible to card counting. A side count, designed specifically for a particular side bet, can improve the player edge. Only a few side bets, like "Lucky Ladies", offer a sufficient win rate to justify the effort of advantage play.
In team play it is common for team members to be dedicated toward counting only a sidebet using a specialized count.
Blackjack can be played in tournament form. Players start with an equal numbers of chips; the goal is to finish among the top chip-holders. Depending on the number of competitors, tournaments may be held over several rounds, with one or two players qualifying from each table after a set number of deals to meet the qualifiers from the other tables in the next round. Another tournament format, Elimination Blackjack , drops the lowest-stacked player from the table at pre-determined points in the tournament. Good strategy for blackjack tournaments can differ from non-tournament strategy because of the added dimension of choosing the amount to be wagered. As in poker tournaments, players pay the casino an initial entry fee to participate in a tournament, and re-buys are sometimes permitted.
Some casinos, as well as general betting outlets, provide blackjack among a selection of casino-style games at electronic consoles. Video blackjack game rules are generally more favorable to the house; e.g., paying out only even money for winning blackjacks. Video and online blackjack games generally deal each round from a fresh shoe (i.e., use an RNG for each deal), rendering card counting ineffective in most situations.
Blackjack is a member of a large family of traditional card games played recreationally all around the world. Most of these games have not been adapted for casino play. Furthermore, the casino game development industry is very active in producing blackjack variants, most of which are ultimately not adopted for widespread use in casinos. The following are the prominent twenty-one themed comparing card games which have been adapted or invented for use in casinos and have become established in the gambling industry.
Blackjack is also featured in various television shows. Here are a few shows inspired by the game.
Examples of the many local traditional and recreational related, blackjack-like games include French Vingt-et-un ("Twenty-One") and German Siebzehn und Vier ("Seventeen and Four"). Neither game allows splitting. An ace can only count as eleven, but two aces count as a blackjack. It is mostly played in private circles and barracks. The popular British member of the Vingt-Un family is called Pontoon , the name being probably a corruption of "Vingt-et-un".
In 2002, professional gamblers around the world were invited to nominate great blackjack players for admission into the Blackjack Hall of Fame . Seven members were inducted in 2002, with new people inducted every year after. The Hall of Fame is at the Barona Casino in San Diego . Members include Edward O. Thorp , author of the 1960s book Beat the Dealer which proved that the game could be beaten with a combination of basic strategy and card counting ; Ken Uston , who popularized the concept of team play; Arnold Snyder , author and editor of the Blackjack Forum trade journal; Stanford Wong , author and popularizer of the "Wonging" technique of only playing at a positive count, and several others.
Novels have been written around blackjack and the possibility of winning games via some kind of method. Among these were The Blackjack Hijack (Charles Einstein, 1976), later produced as the TV movie Nowhere to Run , and Bringing Down the House (Ben Mezrich), also filmed as 21 . An almost identical theme was shown in the 2004 Canadian film The Last Casino .
In The Hangover , an American comedy, four friends try to count cards to win back enough money to secure the release of their friend from the clutches of a notorious criminal they stole from the previous night while blacked out. A central part of the plot of Rain Man is that Raymond ( Dustin Hoffman ), an autistic savant , is able to win at blackjack by counting cards. In the 2014 film The Gambler we see Jim Bennett ( Mark Wahlberg ) playing high stakes Blackjack in order to win large sums of money. This movie displays different blackjack lingo and risky moves that have high rewards.
52 to 416 (one to eight 52-card decks)
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