While Hi-Lo is effective and straightforward, some counters search for methods that add a bit more precision or adjust for specific situations. To calculate the True Count, divide the running depend by the estimated number of decks remaining. You’re not guessing; you’re studying the game, staying one step forward. Counting cards is about preserving a psychological tally of the cards dealt to understand what’s left in the deck. The Hi-Lo Count is essentially the most widely written about, and in my judgment, essentially the most generally used card counting technique. The High-Low was first launched in 1963 by Harvey Dubner1.