Blackjack
Miguel de Cervantes wrote a story called Rinconete y Cortadillo between 1601 and 1602. Two card cheats in Seville play a game they call veintiuno, which means twenty-one. The protagonists state the goal is to reach 21 points without going over. They use an ace that counts as either one or eleven. This Spanish baraja deck forms the basis of early versions played in Castile during the beginning of the 17th century. Later references appear in France and Spain before the game reaches Britain. The first written rules for vingt-un appeared in Britain in 1800. English vingt-un traveled across the Atlantic to the United States in the early 1800s. An 1825 reprint of the 1800 English rules became the first American version. A popular myth claims gambling houses offered a ten-to-one payout if a player held the ace of spades and a black jack. This bonus hand supposedly gave the game its name around 1899. French historian Thierry Depaulis found no historical evidence for this special bonus. He suggests prospectors during the Klondike Gold Rush from 1896 to 1899 named the game after zincblende mineral deposits often associated with gold.
Players place bets inside a betting box at each position on a semicircular table. Dealers face five to nine playing positions while shuffling between one and eight standard 52-card decks together. Each box receives an initial hand of two cards. The dealer's first card sits face-up while the second card remains hidden in hole card games. If the dealer shows an ace or ten-value card, they peek at the hole card to check for blackjack. European casinos often use no hole card games where the dealer draws their second card only after all players finish. Players decide whether to hit or stand based on their total points. Number cards count as their number value. Face cards like jacks, queens, and kings count as 10. Aces count as either 1 or 11 depending on which prevents busting. A player exceeding 21 points automatically loses. A natural blackjack on the starting two cards beats any other hand except another blackjack. Wins pay even money except blackjacks which traditionally pay 3 to 2 odds. Insurance bets allow players to wager up to half their current bet if the dealer shows an ace.
Scraping cards against the table signals a request for another card in handheld games. Tapping the table with a finger or waving a hand toward the body works for face-up dealing. Sliding cards under chips face-down indicates standing pat in handheld formats. Waving a hand horizontally signals standing in face-up games. Placing additional chips beside the original bet outside the betting box marks doubling down. Pointing with one finger confirms the double down action. Drawing a horizontal line behind the bet with an index finger surrenders the hand. Splitting requires placing extra chips next to the original bet while spreading fingers into a V formation. These physical gestures help cameras record every decision for dispute resolution. The eye in the sky uses these recordings to identify dealer mistakes or cheating attempts. Hand signals take precedence over verbal announcements when they disagree. Players must reveal cards if holding blackjack, busting, or requesting doubles and splits. Non-controlling players may place side bets but cannot control the main hand decisions.
Roger Baldwin published The Optimum Strategy in Blackjack paper in September 1956 within the Journal of the American Statistical Association. Ed Thorp verified these calculations and later released Beat the Dealer book in 1963. Using basic strategy reduces long-term losses to less than 1% of total wagers. Changing payout ratios from 3 to 2 to 6 to 5 increases house edge by about 1.4 percentage points. Single deck games offer lower edges around 0.16% compared to eight decks at 0.66%. Requiring dealers to hit soft 17 instead of standing adds roughly 0.2% to the casino advantage. Disallowing doubling after splitting raises the edge by approximately 0.12 percentage points. The Reno rule limits doubling on hard totals of 9, 10, or 11 only, increasing loss expectations by 0.1%. No hole card rules add about 0.11% to the house edge unless original bets only applies. Composition-dependent strategies reduce single-deck edges by 0.04% while six-deck games see reductions down to 0.003%. Most casinos maintain edges between 0.5% and 1% when players follow optimal play.
Card counting systems assign point scores like one for cards two through six and minus one for tens through aces. Counters track running totals to determine when many high-value cards remain in the shoe. Arnold Snyder published articles in Blackjack Forum magazine introducing shuffle tracking concepts. His book The Shuffle Tracker's Cookbook analyzed player edges from tracking favorable clumps of cards. Jerry L. Patterson developed methods for cutting unfavorable clumps out of play. Casinos limit penetration by reshuffling when decks run low to prevent accurate counting. Single deck games benefit counters more but often restrict revealing cards between players. Using external devices to assist counting remains illegal in Nevada jurisdictions. Insurance bets become advantageous when hole cards show greater than one-third chance of being ten-valued. Team play allows members to dedicate themselves to counting specific side bets using specialized counts. Video blackjack machines deal fresh shoes each round making traditional counting ineffective. Some casinos ban identified advantage players from their properties entirely.
Spanish 21 removes all 10s from the deck while keeping jacks, queens, and kings intact. Players receive liberal rules including doubling any number of cards with rescue options available. Five or more card 21s earn bonus payouts alongside 6-7-8 combinations. Lucky Ladies side bet pays if player initial hand totals 20. Perfect pairs wager wins on matching ranks regardless of suit. Bust It! bets win if dealer busts after drawing first card. Double exposure deals both dealer cards face up but blackjacks pay even money only. Blackjack switch lets players swap second cards between two hands for better totals. Super Fun 21 allows splitting hands up to four times with automatic wins at six-card 20s. Video blackjack machines typically pay even money for winning blackjacks instead of standard ratios. House edges on side bets generally exceed main game advantages despite occasional counting opportunities. Insurance correlates well with high-low systems offering sufficient win rates for advantage seekers. Team play often dedicates members solely to counting specific side bet outcomes.
Common questions
What is the origin of the game name Blackjack?
The popular myth claims gambling houses offered a ten-to-one payout if a player held the ace of spades and a black jack. French historian Thierry Depaulis found no historical evidence for this special bonus. He suggests prospectors during the Klondike Gold Rush from 1896 to 1899 named the game after zincblende mineral deposits often associated with gold.
When did Miguel de Cervantes write about early versions of Blackjack?
Miguel de Cervantes wrote a story called Rinconete y Cortadillo between 1601 and 1602. Two card cheats in Seville play a game they call veintiuno, which means twenty-one. The protagonists state the goal is to reach 21 points without going over.
Who published the first paper on optimal strategy for Blackjack?
Roger Baldwin published The Optimum Strategy in Blackjack paper in September 1956 within the Journal of the American Statistical Association. Ed Thorp verified these calculations and later released Beat the Dealer book in 1963. Using basic strategy reduces long-term losses to less than 1% of total wagers.
How do players signal decisions like hitting or standing in Blackjack?
Scraping cards against the table signals a request for another card in handheld games. Tapping the table with a finger or waving a hand toward the body works for face-up dealing. Sliding cards under chips face-down indicates standing pat in handheld formats.
What are the point values assigned to cards in Blackjack counting systems?
Card counting systems assign point scores like one for cards two through six and minus one for tens through aces. Counters track running totals to determine when many high-value cards remain in the shoe. Insurance bets become advantageous when hole cards show greater than one-third chance of being ten-valued.