A Horn or craps-11 bet, as it is typically called, is a one-roll wager that on the next roll of the dice their sum will be 2, 3, 11 or 12. If they total anything different (4, 5, 6, 7, 8, 9 or 10), you lose. If 3 or 11 appears, you are paid 15:1.

A round robin (RR) bet allows you to combine multiple parlays into one bet. The more selections you make, the more parlay combinations you will have in your RR. Once you make your selections, an RR will create parlays of all possible combinations between them.

The Origins\n\n The origin of Blackjack is still debated; the most popular belief is that it originated in French casinos around 1700 due to its mention in Cervantes's novel Don Quixote, which dates to the late 16th/early 17th century. Then, the game was referred to as 'Vingt-et-un' which translates to 21 in French.

The origins of Blackjack is still under debate, but researchers agree that Blackjack probably originated in the French casinos around 1700. The French cards were called "Vingt-et-Un," which translates to "Twenty-one." These cards are probably derived from card games Chemin de Fer, which were popular at that time.