The predecessor of blackjack is “”vingt-et-un”” (meaning 21 in French), which originated in French casinos around 1700. Games at the time did not offer three to two odds for two-card blackjack. Pay dividends. Blackjack was not initially popular in the United States, so casinos tried to offer a variety of additional bonuses to attract gamblers to the game. One of the additional bonuses is that when a player has both the Ace of Spades and the Black Jack (Jack of Spades or Jack of Clubs), the winnings are doubled. Such cards are called “”blackjack”” (blackjack, blackjack), and this name gradually became the name of the American version of the blackjack game. Even after the bonus rules were discontinued, the name “”Blackjack”” continued. With the development of the rules to this day, “”blackjack”” no longer necessarily contains J cards or black cards. (資料來源)
Chase loss 第1種是「1,2,4,8…」的方式來下注，只要玩家不是連續輸9把，完成每1個循環，玩家就能贏1美元，賭本會穩步增長 第2種是不連續的。玩家需找機會下「2,4,8…」理論來說，這與第1種是一樣的，但基於線上賭場連輸/連贏的概率頗大，這種方式會比第1種稍好 這2種技巧就是贏小輸大，一旦輸了，就重新開始下注。
