Illustrious 18 blackjack. Unlike a 4- or 6-deck game, the running count, which is converted to the True Count (count per remaining deck) in. Illustrious 18 blackjack

 
 Unlike a 4- or 6-deck game, the running count, which is converted to the True Count (count per remaining deck) inIllustrious 18 blackjack  Choosing an Online Casino

Pays even money. The Illustrious 18 is a condensed and simplified set of the best card counting strategies used in blackjack. Only pair of 8 against upcard T has the opposite direction (going down instead of going up like all other indexes). Bukunya “Blackjack Attack – Playing the Pros Way” dianggap sebagai salah satu studi blackjack. Dealer Hits Soft 17. Best online casino overall. 112 terms. Team 18 New Member. 5 and 6) omitted. General Blackjack Forum; Illustrious 18 question; If this is your first visit to the Blackjack Forum, be sure to check out the FAQ by clicking the link above. – Webster’s New World College Dictionary ©, 1996 The two most challenging tasks for a card counter are to keep a running count as. Let us teach. If you are playing a double deck game, DHS17, DAS allowed, you SHOULD DD on a 9 vs. Besides a no-deposit bonus, they offer a deposit bonus up to 450%. The other cards in the combination are. Double 9 against 2. Flashing my wad (bankroll people, bankroll) has only had yielded two noticeable results in my personal experience. Wild Buffalo Bonanza is one of three titles released by various developers in April 2023 with an overall theme, individual iconography, and backdrops developed by large language model artificial intelligence in concert with human artists. And of that 80%, 60% are from the top 3 index plays alone, insurance 16 vs 9, and 15 vs 9. I would start with the illustrious 18, but modify it to what your index generating software tells you are the correct indexes. For the most part decisions in single and double deck are pretty close to decisions in multi deck. I'm an informed but not very experienced card counter. You can also review more detailed information about the I18 appears in Schlesinger's book Blackjack Attack. Hi-Opt I: Core and Full adapted from Lance Humble and Carl Cooper’s The World’s Greatest Blackjack Book; Reduced plays are Humble and Cooper’s matrix entries for Don Schlesinger’s “Illustrious 18” less the two splitting Tens. In European blackjack, the dealer is supposed to hit on a soft 17. When all 17 flashcards300% up to. Second, positive indexes are much more important than negative indexes in shoe game because AP's advantage comes from spread than index play in shoe game. But you came here for answers and I have them. Dubner’s analysis shows that the Hi-Lo is superior. Forums. All the numbers in the following tables are based on. Texan native Alice Walker got into blackjack around the age of 13. When the index is 0, you can use running count. The Illustrious 18 is an advanced system with 18 game decisions depending on the count and situation. Let us bring the thrills of Atlantic City to your doorstep with a large array of Blackjack, Roulette, Slots, Video Poker, Table Games, and Big Jackpot slots. In the current article we present the relative value of the semi-Wonging style of play, given a number of circumstances. Menu. That’s easily achieved by getting. With the same sense of anticipation as a physical Roulette table, American Roulette is the perfect fit for fans of the red, black, and green wheel. Blackjack. 2 They appear in Blackjack Attack by Don Schlesinger, and are republished here with permission. In simple terms, the Illustrious 18 is the name of the eighteen variations of basic blackjack strategy. The advice given is mathematically sound, targeted to the beginning level counter. " Grosjean stated (page 388): Grosjean stated (page 388): “Blackjack Attack” is subtitled “Playing the Pros’ Way,” and yet I doubt you can find a professional card counter on earth who uses only 18 indices. RED 7 counted as 1 Black 7 counted as 0 IRC starts as -4 (each deck starts as -2) *No true count *Single Strategy using the DD H17 basic strategy chart from Wizard of Odds If the dealer is showing 2-6, your strategy should be to make the dealer bust and make sure you don't bust. Whether you’re a newbie to sports betting or a regular at the track, our odds. The Illustrious 18 indices here are as presented in Don Schlesinger's "Blackjack Attack", a must read for any Blackjack enthusiast. (Ive been using this chart for all my play in the last few months. 1 / 23. In Schlesinger’s case, this led to the creation of the Illustrious 18. Continue reading What. Pick ‘Em Blackjack. Evaluating Eight-deck Games. 15% which is the lowest possible edge a casino can have. I am playing european no peek blackjack. Member List; Forum Actions. . The basic strategy differences are also (obviously) index differences. 2s. But you came here for answers and I have them. Illustrious 18, or 18 Illustrious Tells, whatever your name, Thank you Very Much! From Your Most Affectionate Casino with Love. . The Fab Four is an easy add-on to your current skills, but The Illustrious 18 takes a while to learn. It is so VERY minor in difference it hardly matters. IMAGE CREDIT: 8-Deck. I started learning all the 6D KO Full indices. What is the Illustrious 18? It is a set of 18 indices or exceptions to the common rules of basic blackjack strategy. Illustrious 18. So, if the player plays six-deck blackjack, this means there are 12 half-decks. I totally disagree with this statement, "So, the illustrious 18 provides approx. 10,10 v 6 = +4. In “Blackjack Attack, Playing the Pro’s Way, 2 nd edition” (BA), author Donald Schlesinger presents the “World’s Greatest Blackjack Simulation. So, let's say the TC is 4 and you are dealt 8-7 vs dealer 10. I have read Don Schlesinger's work on the Illustrious 18. But, now after being told that by doubling the hi-lo ill18 index plays I want get the opportunity to use them as often meaning The Sweet 16, as you may know, are a subset of the Illustrious 18, with the two plays for splittings tens (vs. 25 terms. There are a few reasons for that. Jul 24, 2006. Next, you should count the dealer's upcard and every one of the hit cards while they are dealt to you and the others. Simple and dependable, these offer the added benefit of increase winrate followed by decrease variance. What is the Illustrious 18? It is a set of 18 indices or exceptions to the common rules of basic blackjack strategy. Blackjack hall of fame and gaming mathematician Donald Schlesinger affectionately called a set of efficient strategic deviations The Illustrious 18, and the name stuck. I can see you're not a regular blackjack player, yet you've done your research and made an amazing simulation. "The Illustrious 18" Blackjack Strategy Deviations Jack Dell 145 subscribers Share 8K views 4 years ago A short video about when to deviate from Blackjack basic. To find which move to make, follow the x-axis, or 'player's cards' until you find your hand value. BJA3 is required reading in my opinion. New posts New profile posts Latest activity. I count using the hi lo. For example, “16 Vs. The best combination consists of an ace (which can be counted either as 1 or an 11) and a ten-point card (Queen, Jack, King and a 10). Mimosine. Jun 28, 2007 #21. . The table below illustrates basic strategy for H17 double-deck games. bridgetroll2 • 1 yr. If the dealer is showing 7-A, your strategy should be to make a score of 17. Member List; Forum Actions. 19 terms. These are the most important index numbers to remember. The yellow icon is the visual guidance to playing basic blackjack strategy with the illustrious 18 variants and counting with hi/lo. Mark Forums ReadThe approximate standard deviation (SD) figures for the play-all style approach with ordinary bet spreads are as follows: 1. NO hole card but a dealers blackjack only takes original bet (i. Don Schlesinger. com. 3. S. FIRSTLY, a correction. Download Now. Join Now Demo Play i. 80% of any gain from play deviations comes from just the top 18 decisions (which includes 10-10 splits). Since then, she has released three more albums and has. Just out of curiosity, I plugged each of the 18 individual deviations into the CVCX 'Index Chart Viewer' on the website card-counting. Don Schlesinger invented the Illustrious 18, but he has another list called Fab 4, which covers surrender. Darren K. Unlike basic strategy (which is an absolute measurement), the Illustrious 18 is a. Six full decks are in play and the cards are automatically returned to the virtual shoe for a reshuffle after each hand is played. The casino has an estimated edge of 0. I believe all of the Illustrious 18 are +4 or lower except for two (I forget which ones for HiLo). Illustrious 18 Hand & Dealer CardHowever, for the negative plays, I like to remember the basic strategy play as the general rule, and then apply the exception when the index gets below the trigger point. Study the chart below. 4 tens, and 4. I first generated them for Hi-Lo, but, of course, they can be created for any card-counting system. Hit 13 vs all dealer cards except 3, 4, 5, or 6 when you should stand. While not widely known in the blackjack community, Schlesinger is one of those professional blackjack players that. 38 terms. r/blackjack A chip A close button. I am guessing that the illustrious 18 was developed based on vegas strip rules. Seems to me that the odds of busting on 16 are the same regardless of whether the dealer has 10 or 9. Frais Drive Geant Casino, No Deposit Bonus Lucky 18 Casino, Illustrious 18 Blackjack Attack, Gala Casino Northampton Phone Number. For example 5,3 v 6 represents a true count of +3 and hence a basic strategy double. know these 18 rules at specific counts for an advantage. If this is your first visit to the Blackjack Forum, be sure to check out the FAQ by clicking the link above. These 18 plays were first proposed by Don Schlesinger, a professional blackjack player and author, and have become one of the most popular and effective advanced. James Fernando. Award winning casino practice software tools for beatable games: Blackjack card counting & shuffle tracking. BJTF is an advantage player site based on the principles of comity. dealer's 4-6 up cards. You will have to r e g i s t e r (free) before you can post: click the r e g. This combination is what is actually known as a “blackjack” or a “natural” 21 which automatically earns a win for the player, unless of course, the dealer has also collected a blackjack. The reality: Illustrious 18 makes counters poor, and enriches casinos. Blue is the additional gain using Full. Donald Schlesinger is a gaming mathematician, author, lecturer, player, and member of the Blackjack Hall of Fame who specializes in the casino game of blackjack. The Sweet 16, as you may know, are a subset of the Illustrious 18, with the two plays for splittings tens (vs. You can run your own index generator with CVData. +2 392 3929 210. Thread starter CoopOwnz; Start date Dec 22, 2016; Tags fab 4 illustrious 18; C. By Jason Underwood. 292 terms. He says to learn the Fabulous 18 and, "In multiple-deck games, because most of our advantage comes from spreading our. The rest of the breakdown is mine. To find which move to make, follow the x-axis, or 'player's cards' until you find your hand value. The sim plays hi-lo, with the illustrious 18. Hey guys, I'm new this is my first thread I have a few queries about the I18 How much of an advantage does it. 10,10 v 5 = +10. I’m so used to not hitting against a 16 it’s throwing me off as I’m relatively new to the illustrious 18A yearly win can go from 25,000 dollars to 27,500. 3. Gambling Mirror : Details. Without capping the fee, the board set up a potential bidding war for one or more of the licenses. For example, 16v10 is 0 and 15v10 is +4 -- does this mean that I should stand with a 16v10 or a 15v10 with TC's greater than 0 and +4, respectively? And 10v10 at +4, is. You need to surrender, if your hand is 14, the dealer's upcard is 10 and your true count is +4. View Profile View Forum Posts. CFAH18-40 Cam Follower Bearing / Track Roller Bearing 18x40x58mm. The major aim in the construction of these tools is the accurate simulation of play in a casino. A yearly win can go from 25,000 dollars to 27,500. Basically, the. The Illustrious 18 HOME Blackjack Guide The Illustrious 18 The effect of using variations to the strategy is dependent on the card counting. Besides when to insure of course. Hi, im pretty knew to the whole gambling and casino scene and I just started up playing blackjack and was just wondering what are some ways you guys memorized the basic strategy table. Illustrious 18 Blackjack Deviations, Ryan Murphy Casino, Planet 7 Casino Silver Oak Casino 25 Free. 87%). Remember Me? AP News; Forum; Real-Time; Top Posts; FAQ; Community. Dealer's 10: Surrender if can, otherwise stay on any positive Running Count (if negative Running Count, Hit) Vote. And 18 is a good, if not excellent, point value. In the BJA deviations charts, they have some Soft 19 (ie. . mattc_m • Additional comment actions. I'm beginning to memorize the 'Illustrious 18' and have a couple of questions. Or check it out in the app stores. You will have to r e g i s t e r (free) before you can post: click the r e g i s t e r link to proceed. 2nd = 16 vs. Blackjack Illustrious 18. Instant Play Online. In blackjack, using a hi-low count. 1) A kid who I swear was 16 was sat down at the $10 table, eyed my tidy stack of green chips, and asked, "How much did you start with?" "About this much. I'm working on committing the Illustrious 18 to memory and I'm wondering what basic strategy it's based on. The Illustrious 18 was a concept created by Don Schlesinger as a way to capture most of the value of all index plays by focusing on the top 18 most valuable. I see this term come up alot. Our 70+ videos, and resources, teach you concepts like. #1. If you have problems with gambling addiction, PLEASE contact here - Ncpgambling. For a double-deck game with a bet spread of 1-8 units, the SD is 3. The comment about illustrious 18 was literally just. I only see Illustrious 18 and fab 4 not the Catch 20 check box in CVCX 4. According to wiz of oz, the house edge for this game is about 0. Jul 11,. The latest iGaming event has awarded the. 280 terms. I also compared the illustrious 18 with the index's in Wong's "Professional Blackjack" Table A4. Since basic strategy is a losing game on its own, the only way to get the edge is by spreading your bets. Slots Themes. In blackjack, in particular, hole carding means to look at the dealer’s hole card at the right time in order to see its value. This means we will have more opportunities to place large bets in shoes with 80% penetration and use Schlesinger’s’ Illustrious 18 or other variations to the basic strategy that can help move. The bet can be made at any time, concerts inspired by the initiative were held in other countries. Wyoming, the American state that is widely known as the “Equality State”, has registered new records in the month of October 2023 when it comes to its regulated online sports betting market. If you are already good with Hi-Lo counting, you can give these systems a try. The game follows mostly vanilla blackjack rules, with the player aiming for land hands valued at 21, or just beat the dealer’s hand, without surpassing the 21 mark. Our first card counting test is rather generic and covers things like – the legality of it all, popularity of the various systems, rules, balanced versus unbalanced systems and the Illustrious 18. These are the 18 most advantageous deviations from basic strategy, based on the Hi-Lo count. If there is no row for splitting (fives and tens), then look up your hand as a hard total (10 or 20). To start viewing messages, select the forum that you want to visit from the. Double 10 Vs. Let us bring the thrills of Atlantic City to your doorstep with a large array of Blackjack, Roulette, Slots, Video Poker, Table Games, and Big Jackpot slots. Carter's 12 Month Size Chart. However, if play continues and a player’s hand totals 15, 16, or 17 (or 18 at a live casino), they will be presented with the option to zap, that is to say to be dealt two new cards. and what are they? Colin answers all. 117% to the player’s overall advantage, based. The following table can be used as a tool to memorize the results from each calculation. Another good one to remember is to surrender 14 against a 10 at a true of 3 or more. I-18 delivers around 80% of the value of knowing every last one of the index numbers. One useful drill to help you keep a true count in single-deck games is to practice dividing your blackjack running count by fractions (one quarter, one half, three quarters and so on). ” There is a fantastic article written by Louden Often on blackjack apprenticeship’s website. According to the famed “Illustrious 18” table in Don Schlesinger’s “Blackjack Attack” insurance is the single most valuable hand to the counter, in terms of value gained by making count dependent strategy changes. 36K subscribers in the blackjack community. One thing I'd like to mention is, as far as I know, no casinos in US let you hit or double after drawing the first card on a split A (10:24 example the simulation doubled after drawing a card to the A). A7 v 2 is a double at +1 in S17, but again a stay at -1 in H17. Blackjack Hall of Famer Don Schlesinger and computer whiz Dave “Gronbog” Brolley go far beyond Schlesinger’s legendary “Illustrious 18” to provide current and prospective Hi-Lo players with everything they need to determine how to structure the playing-strategy component of their counting system. bigplayer. If the player has been able to see the dealer’s hole card and makes the correct moves. This means the player should stand if the True Count is +4 or higher, otherwise hit. The game has been around for centuries, and now its multiple variations are accessible in online. I'l playing with 8 decks and standard Atlantic City rules: Double on any two cards Double after split Dealer stands on all 17 Late surrender Resplit all but Aces Resplit up to 3 hands Blackjack pays 3 to 1. With hitting 16, put it this way, if you were to stand, you would lose 546,000 out of 1,000,000 hands. The Soft 17 rule explained. I was wondering if anyone knew if this chart at the very bottom of the page is for shoe games, single or double deck? If it's not for shoe games can anyone link me a chart for 4+ deck s17? Thank youThis shows the power of today’s modern computers. The reason why single deck basic strategy is so different is because of wild variations in the true count based on the initial starting cards. What are the next say 10-20 most important index plays beyond the illustrious 18? For a S17, DAS, DA2, No Surrendors, 8 deck game w/ 75-85% pen. Just out of curiosity, I plugged each of the 18 individual deviations into the CVCX 'Index Chart Viewer' on the website card-counting. this is the very reason why rounded indices work SO well with very little loss compared to precise indices. . It's time for a touch-up on this! I'm creating the perfect Blackjack player! This Raspberry Pi-powered robot will identify the cards in its hand and the dealer's upcard, and use a Hit or Stand lookup table to determine the best play to make. This online index chart is pre-set with 6 decks, S17,DAS, LS. The 18 plays described equal about 80% of the gain that could be had from playing the full set of indexes. 4. The Illustrious 18 was a concept created by Don Schlesinger as a way to capture most of the value of all index plays by focusing on the top 18 most valuable. The total hands played are 10 hours times 70 hands. Answer: NO. April 8, 2021, 9:16 am ·. Illustrious 18. Doubling down is allowed on any 2 cards, double down after split is permitted (DAS) and there is no surrender. I know most of the basics plays of the game and started trying to remember the table around 1-2weeks ago. So your 52-card deck which typically has 20 low cards, 12 neutral cards, 16 tens, and 4 aces, now has 17 low cards, 12 neutral cards, 18. For instance, if you are playing high-low and you want to use the Illustrious 18 index, you can select that playing strategy so that if you deviate from play incorrectly according to the count. The game of Blackjack is played with one to eight decks consistent of 52 cards. According to Schlesinger, the insurance play alone is worth over 30% of all the gain. — Don Schlesinger, Creator of Illustrious 18, Author of Blackjack Attack: Playing the Pros’ Way “Best for the aspiring card-counter” — Anthony Curtis, Publisher of Las Vegas Advisor . Nevada thus became the eighth state the. After the number of decks used and the. The High-Low was first introduced in 1963 by Harvey Dubner. Playing online blackjack for free also helps you to develop your strategy without risking your own cash. When I was making flashcards for the Illustrious 18, I pulled the indices from wizards of vegas. Natural (blackjack hand): A player who receives an Ace and a 10-point card as the initial two cards on a deal is said to have a “natural 21” or a “blackjack”. #1. You will have to r e g i s t e r (free) before you can post: click the r e g i s t e r link to proceed. N). 32% HE. The top 12 plays account for more than 90%. Doing the math. ILLUSTRIOUS 18 AND FAB 4 Insurance Take Insurance if the true count is +3 or higher Hitting/Standing 16 vs 10 – Stand with zero or any positive. Aug 12, 2005 #1. Regarding the illustrious 18, I'm curious: So it is stated that if the count is +5 then you should split 10s againt a 5. Best Online Blackjack BonusesBlackjack card counting software. VI #3), titled "Attacking the Shoe!: A Revealing Study of the Relative Gain Available From Using Basic Strategy Variations for the Hi-Lo. I really don't recommend playing 8D since it needs much higher bet spread like 20. Some of them are even easier to learn to Hi-Lo counting. For example, for a multi-deck game BS (from the charts that I have found and please correct me if I am wrong. Do you need to know card counting deviations in order to beat blackjack? How many are there? Where can you find them?. For example, in Basic Strategy, whether you should DD with a 9 vs. Mr_Paper_ Blackjack Basic Strategy. The reason behind this is because such a payoff reduces the house edge by approximately 2. . The 4 is barely on the other side of the border. If you draw 22 or higher, you go bust and the dealer wins the hand. . In this case, surrender is the play because the Fab 4. Slots Plus Casino 25 No Deposit Bonus, Casino Fiesta Herradura, Illustrious 18 Blackjack, Is Caesars Casino Open In Windsor, Pokerstars Icon Picture, De Casino Restaurant Sint Niklaas, Takeaway Near Crown CasinoSlot Apps for Real Money. Taking insurance at T3 and standing on a 16v10 if surrender isn’t available is 40% of the deviation advantage for those two plays Alone, hope this helps!Video Poker. Choosing an Online Casino. Jump To Online Training Test. Then look on the x-axis, or 'dealer card' to find their upcard value. What is ace sequencing? Ace sequencing involves the player (or a team of players) keeping track on specific areas of a deck or decks of cards prior and through the shuffle process to determine where aces might be positioned after the cards are shuffled and placed back in the shoe. The New York State Gaming Facility Location Board has officially kicked off the bidding process for three commercial casinos. OP = optimally played. THE ILLUSTRIOUS 18 WITH SURRENDER . Blackjack is an exciting card game in which card-counting techniques are applicable. The Illustrious 18 is the one concept that Schlesinger is best known for. Does this change things somewhat? Or in other words. Exploiting Dealer Tells in Blackjack. The Revere Point Count Blackjack Strategy is contained in the book Playing Blackjack as a Business by Lawrence Revere. Just out of curiosity, I plugged each of the 18 individual deviations into the CVCX 'Index Chart Viewer' on the website card-counting. One uses the Illustrious 18 and the other uses a full set of indices. Multi-Hand Blackjack Poker & Pairs. 16 v 10 and 12 v 4 for example use a 0 TC (or any positive/negative counts respectively) On the chart the 12 v 4 does say 0 so I get that now, but it says decision: hit/stand. I have a question about what to do when surrender is allowed and you are using the Illustrious 18 indicies for the high-low counting system. ago. com. Get to know all about blackjack basic strategy - what blackjack basic strategy is, how to use blackjack chart, the rules to avoid at blackjack table and the. That is easily a down payment on a car or a nice vacation. playing insurance right is worth as much as the I18 combined!Take the Free Double any time you’re dealt a hand valued 9 to 11. I hope the book brings as much joy to others. Cancion De Lady Gaga Poker Face Letra, Casino Student Night, Foto Van Roulette, Keybet Roulette, Illustrious 18 Blackjack, Aplikasi Apk Blackjack, Navy Chief Poker Chips stockmarketafterhours 4. 33 * sqrt (500) = 29. It's. With hundreds of slot machines and progressives from top providers, these online casinos offer lucrative slots bonuses to get you started. Blackjack hall of fame and gaming mathematician Donald Schlesinger affectionately called a set of efficient strategic deviations The Illustrious 18, and the name stuck. Play Here. The most efficient, and thus the most preferred way to detect if there are some cards missing from the deck is the card-counting method, which means that players should be very careful when playing the game of blackjack. Get app Get the Reddit app Log In Log in to Reddit. Jun 22, 2005 #1. Unlike a 4- or 6-deck game, the running count, which is converted to the True Count (count per remaining deck) in. Double 9 against 2. This combination includes the ace, king, queen, jack and ten of spades. 12 v 5 = . For a single-deck game with a bet spread of 1-4, the SD is 2. Blackjack Playing Deviations Guide (Advanced Card Counti…Illustrious 18 (*when two indices are displayed, the second index is for H17 games) Revere Point Count (RPC) The Revere Point Count system, introduced by Lawrence Reverie, is a two-level card counting. The blue line displays the advantages using no indexes — playing Blackjack Basic Strategy. Learn Blackjack in your sleep! in your car! on the plane ride to Vegas! If you've already mastered the 281 Basic Strategy decisions for Blackjack, you can ex. All content herein is intended for audiences aged 21 years and older. Many decisions are a waste of brain space, just use basic strategy for those. Illustrious 18 is nice and dandy. Simple and dependable, these offer the added benefit of increase winrate followed by decrease variance. Blackjack has also many different variations which can be found in a number of brick and mortar casinos as well as online due to their huge popularity. I noticed that the book doesn't provide numbers for all of the Illustrious 18 deviations. BlackjackGuy123. The correct basic strategy is a proven winning system for the game of twenty-one. The. For the most part decisions in single and double deck are pretty close to decisions in multi deck. Blackjack Deviations. additionally since the I-18 only adds a small advantage to your game, slight modification and variation in these numbers matters little. Most of the pages are filled with stories and advice based on the author’s own experience. grixs. A. Press one of the buttons on the bottom that corresponds to the index for that hand. Select the rules and cards, then click the Calculate button. These have become known as the Illustrious 18 and the Fab 4. 5 stars - 1769 reviewsHowever, in New Jersey, blackjack is often played according to the following guidelines: Blackjack is a 3:2 payout. I don't have any card-counting experience yet, and I don't want that experience from an online live BJ game. The top of them is the insurance bet, which you would do at a count of +3 or greater. I know that. Joined: Jul 27, 2017. I made a basic BlackJack sim a few weeks ago, but the results I got for each trial varied significantly after simulating ~8,000,000 hands. Most people realize that skilled poker players can beat the game of poker but practically all. This online index chart is. Other blackjack card counting systems.