Four Horsemen of the Apocalypse is the name given by gambling authors [1] [2] to the four U.S. Army engineers who first discovered in the 1950s the best playing strategy in the casino game of Blackjack that can be formulated on the basis of the player's and the dealer's cards. The so-called Basic Strategy, which was subsequently refined through the use of computers and combinatorial analysis, loses the least money to the casino in the long term.
In 1953, Roger Baldwin, a private in the U.S. Army with a master's degree in mathematics from Columbia University, stationed in Aberdeen Proving Ground, the U.S. Army's oldest active proving ground, [3] was playing dealer's choice poker in the barracks. After a player acting as dealer selected Blackjack, someone remarked that the dealer, as they do in the Las Vegas casinos, would have to stand on 17 and hit on 16. [1] Baldwin was intrigued by this news enough to embark on a project during his off-work hours to discover the optimal playing strategy for the player on the basis of the player's and the dealer's cards, as well as the rules dictating the dealer's play. For this, Baldwin asked the help of Wilbert Cantey, a sergeant at the facility, who had left the seminary because of his hustling at pool and cards and pursued a master's degree in Mathematics. They enlisted the help of privates Herbert Maisel, who later became a professor at Georgetown University, and James McDermott, who had a master's from Columbia University. [1]
For their project, the four Army men used only the desk calculators available at the military base, which were called at the time “adding machines.” The result of their work was presented in an analytical study in the Journal of the American Statistical Association , in September 1956, [4] and subsequently in a book titled Playing Blackjack to Win that was published in 1957. [5] The book, with a foreword written by TV quiz-show star Charles Van Doren, contained a pull-out strategy chart with sections on Draw or Stand, Doubling Down, and Splitting Pairs. [4]
The book did include, in a chapter titled "Using the Exposed Cards to Improve Your Chances", the first valid card-counting system ever published, but their method was not strong enough to offer a positive-expectation strategy for the player, although it did offer the least costly strategy in the game of casino Blackjack. [6] A gambling expert has claimed that any player who uses the Four Horsemen's basic strategy today "would not be giving up more than a few hundredths of a percent [of expected value] over perfect basic strategy." [6]
The four originators of Blackjack's Basic Strategy went on with their lives away from casinos and gambling, dedicating themselves to scientific research, teaching and business. [7] But their work caused an immediate sensation in gambling research as well as among professional gamblers. MIT Professor of Mathematics Edward O. Thorp tested their strategy on the university's IBM computers and found it to be accurate "within a couple of hundredths of a percentage point." [1] Thorp went on to formulate the first strong card counting strategy and tested it in actual casino play, in trips he took to Las Vegas, often accompanied by Claude Shannon, who is sometimes referred to as "father of information theory". [8]
The existence of a casino-beating system spread throughout the American gambling and casino circles, and in 1962, E. O. Thorp published his work Beat The Dealer, widely considered [9] [10] [11] [12] to be the original Blackjack advantage-playing manual. [13] The book sold over 700,000 copies and earned a place in the New York Times bestseller list. The publication and subsequent notoriety of the book was the cause at the time behind many casinos changing the rules and conditions of how Blackjack was offered – for example, they stopped dealing single-deck Blackjack down to the last card. [14] After players began complaining, most casinos went back to the previous rules and conditions. The tables were soon full of casual gamblers who believed that by they could now "beat the house," even though most of them never strictly followed Thorp's "complicated," two-parallel-counts system, or even the simpler systems that subsequently appeared, such as High-Low, and the casinos started winning more money than before Thorp's book had appeared. [14]
Thorp's work in turn inspired the research and the exploits of professional blackjack players such as Stanford Wong, Ken Uston, and the MIT Blackjack Teams of the 1990s, as well as many others. [1]
In 1965, in an early recognition of the impact that the work of the four U.S. Army men would have on the game of 21, gambling author Dr. Allan N. Wilson labelled them "The Four Horsemen of the Apocalypse" [15] in his book The Casino Gambler’s Guide. [16]
On the night of 4 January 2008, during Max Rubin's 12th annual Blackjack Ball, held in Las Vegas, the Four Horsemen were inducted into the Blackjack Hall of Fame. [1]
During the Ball's festivities, Stanford Wong commented: "Thorp never would have got there without the work of these guys. If Thorp never got there, I don't know that any of us would be here. I don't know how many millions of dollars just the people in this room have made as a result of the work that these guys did." And Max Rubin stated, “If it wasn't for them, not one of us would be in this room." [1] Former member of the MIT Team Johnny Chang said, "When I first read the 1957 article they wrote that appeared in the Journal of the American Statistical Association with an accurate basic strategy, I couldn't fathom how they had accomplished this using desk calculators. It just seemed impossible." [17]
Later in 2008, on the 50th anniversary of its first edition, the book Playing Blackjack to Win was reprinted in the US, [5] with a foreword written by E. O. Thorp, and an introduction by Arnold Snyder. [5] In his foreword, Thorp wrote: "To paraphrase Isaac Newton, if I have seen farther than others it is because I stood on the shoulders of four giants. [5]
Wilbert Eddie "Preach" Cantey, who'd worked his whole life on calculators and mainframe as well as personal computers, died on 21 May 2008 at the age of 77 at the Genesis Layhill Center in Silver Spring from pancreatic cancer. [2]
James McDermott worked as an IBM executive for 33 years. He died in 2018 aged 88. [18]
Herbert Maisel, the only member of the team without a college degree at the time, went on to teach computer science at Georgetown University. He died in 2019, aged 88. [18]
Roger Rauschenbusch Baldwin worked as a systems administrator for Union Carbide and the City of New York. He had once confided to the MIT campus newspaper, The Tech, that his knowledge of Blackjack had "ended with the first edition of Beat the Dealer." He died on 10 January 2021 at his home in Riverhead, Long Island. [19] He was 91 and the last surviving member of the Four Horsemen.
Blackjack is a casino banking game. It is the most widely played casino banking game in the world. It uses decks of 52 cards and descends from a global family of casino banking games known as "twenty-one". This family of card games also includes the European games vingt-et-un and pontoon, and the Russian game Ochko. The game is a comparing card game where players compete against the dealer, rather than each other.
Card counting is a blackjack strategy used to determine whether the player or the dealer has an advantage on the next hand. Card counters try to overcome the casino house edge by keeping a running count of high and low valued cards dealt. They generally bet more when they have an advantage and less when the dealer has an advantage. They also change playing decisions based on the composition of the deck and sometimes play in teams.
The MIT Blackjack Team was a group of students and ex-students. The students were from Massachusetts Institute of Technology, Harvard University, and other leading colleges; they used card counting techniques and more sophisticated strategies to beat casinos at blackjack worldwide. The team and its successors operated successfully from 1979 through the beginning of the 21st century. Many other blackjack teams around the world have been formed with the goal of beating the casinos.
Edward Oakley Thorp is an American mathematics professor, author, hedge fund manager, and blackjack researcher. He pioneered the modern applications of probability theory, including the harnessing of very small correlations for reliable financial gain.
Breaking Vegas is an American television series that premiered on the History Channel in 2004. The series covers the great lengths people have gone to make money, sometimes illegally, from casinos.
Ken Uston was an American blackjack player, strategist and author, credited with popularizing the concept of team play at blackjack. During the early to mid-1970s he gained widespread notoriety for perfecting techniques to do team card counting in numerous casinos worldwide, earning millions of dollars from the casinos, with some bets as high as $12,000 on a single hand.
Double Exposure Blackjack is a variant of the casino game blackjack in which the dealer receives two cards face-up in part of the initial deal. Knowing the dealer's hand provides significant information to the player. To maintain the house edge, the payout when the player receives a natural blackjack is reduced to even money from 3:2, and players lose their bets when their hand is tied with the dealer. In addition, with both dealers' cards exposed at the outset, players cannot buy insurance or surrender their hand.
John Ferguson, known by his pen name, Stanford Wong, is a gambling author best known for his book Professional Blackjack, first published in 1975. Wong's computer program "Blackjack Analyzer", initially created for personal use, was one of the first pieces of commercially available blackjack odds analyzing software. Wong has appeared on TV multiple times as a blackjack tournament contestant or as a gambling expert. He owns a publishing house, Pi Yee Press, which has published books by other gambling authors including King Yao.
Arnold Snyder was a professional gambler and gambling author. He was elected by professional blackjack players as one of the seven original inductees into the Blackjack Hall of Fame – hosted at Barona Casino – for his contributions as a blackjack player and his innovations in professional gambling techniques. He was the first blackjack authority to publish the importance of deck penetration in card counting, in his 1980 book The Blackjack Formula. He was also the first blackjack researcher to argue that radical simplification of blackjack card counting systems did not substantially decrease earnings.
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. His work in the field has spanned almost five decades. He is the author of the book Blackjack Attack - Playing the Pros' Way, currently in its third edition, which is considered one of the most sophisticated theoretical and practical studies of the game ever written. In 2023 he and Dave Brolley coauthored, The Hi-Lo Card Counting System: A Complete Guide to Index Play.
Jerry L. Patterson is an American writer. He authored several gambling books as well as a gambling newspaper column.
Blackjack Switch is a casino gambling game invented by Geoff Hall and patented in 2009. It is based on blackjack, but differs in that two hands, rather than one, are dealt to each playing position, and the player is initially allowed to exchange ("switch") the top two cards between hands. Natural blackjacks are paid 1:1 instead of the standard 3:2, and a dealer hard 22 pushes all player hands except a natural.
The Blackjack Hall of Fame honors the greatest blackjack experts, authors, and professional players in history. It was launched in 2002, and its physical premises are in San Diego, California.
Advantage gambling, or advantage play, refers to legal methods used to gain an advantage while gambling, in contrast to cheating. The term usually refers to house-banked casino games, but can also refer to games played against other players, such as poker. Someone who practices advantage gambling is often referred to as an advantage player, or AP. Unlike cheating, which is by definition illegal, advantage play exploits innate characteristics of a particular game to give the player an advantage relative to the house or other players. While not illegal, advantage play may result in players being banned by certain casinos.
In card games, hole carding is the obtaining of knowledge of cards that are supposed to be hidden from view. The term is usually applied to blackjack but can apply to other games with hidden hole cards, like three card poker and Caribbean stud poker. So long as it does not involve the use of a device like a mirror, actions like touching the dealer's cards, or having another person read and signal the hole card, in most jurisdictions hole carding is a legal form of advantage gambling. In some games, like stud poker, casinos normally have rules against rubbernecking or having a confederate stand behind an opponent to signal hole cards.
Splitting aces and eights is part of blackjack basic strategy. Rules vary across gambling establishments regarding resplitting, doubling, multiple card draws, and the payout for blackjack, and there are conditional strategic responses that depend upon the number of decks used, the frequency of shuffling and dealer's cards. However, regardless of the various situations, the common strategic wisdom in the blackjack community is to "Always split aces and eights" when dealt either pair as initial cards. This is generally the first rule of any splitting strategy.
A natural is a term in several gambling games; in each case it refers to one or two specific good outcomes, usually for the player, and often involves achieving a particular score in the shortest and fastest manner possible.
Mike Goodman was an American professional gambler, a pit boss for a Las Vegas casino, and an author of books that gave advice on gambling and told stories of gamblers and their escapades. He is most known for his 1963 book How to Win: At Cards, Dice, Races, Roulette, which went through many printings and sold over a million copies.
Al Francesco was an American blackjack player and gambling strategist. Considered to be “The Godfather of Blackjack”, Francesco is recognized as the creator of the team play concept, the “big player” strategy, and the drop card method. Beginning in 1971, Francesco personally recruited and trained disciplined card counters to work together in teams to beat the casinos. Franceso's teams of blackjack players would station themselves at various blackjack tables to count the decks, and when the mathematical odds turned in their favor, the counters would signal a “Big Player” to come to the table and place large wagers until the edge was lost and once again favored the dealer. While most card counters would eventually be discovered by casinos through their betting patterns and banned from further play, Francesco's unique team concept helped his players evade detection and continue winning.
Roger Rauschenbusch Baldwin (1929–2021) was an American military serviceman and researcher.
The first published winning system was Edward O. Thorp's ten-count in his Beat the Dealer.
Dr. Thorp, of course, started it all with his classic text, Beat the Dealer.
A mild-mannered assistant professor of mathematics was claiming to have developed via computer simulations a method for beating casino Blackjack.
Thorp['s] book, Beat the Dealer, ... opened the world to card counting. The genius of Thorp was the codification of card counting into a fully realized, workable, relatively simple strategy.