Dubner’s Hi-Low
Harvey Dubner introduced his version of this “Hi-Low” counting system in 1963. Although based upon Thorp’s and Braun’s research, its beauty lay primarily in its added simplicity. Much easier to implement than Thorp’s Ten-count system, Dubner’s Hi-Low was almost as powerful, and it subsequently brought viable card-counting within the grasp of the average blackjack player. Dubner suggested the same basic card values (i.e., low cards were counted as +1 and high cards as 1, while 7s, 8s, and 9s continued to be ignored). Braun improved upon Dubner’s ideas by developing correct wagering and playing strategies for this counting system, which remain state-of-the-art today. Known interchangeably now as “Thorp’s Point-count,” “Dubner’s Hi-Low,” and “Braun’s Plus-Minus,” these three systems are virtually identical. It is still the most highly recommended and successful of all counting regimes ever devised, whatever label one chooses to attach to it. Since Dubner was the first to describe and propound the virtues of this counting system it is only fair that we refer to it as he did and call it the “Hi-Low.”








