https://www.metooo.io/u/6747c6b68136180513989b14
The easiest (and arguably the most effective) card counting system is the "plus minus" circle. All cards are assigned a value. Low cards, 2-6, are assigned something of plus one. Medium cards, 7-9, are discounted, with a price of stop. High cards, 10-A, are assigned something of negative one. Like game proceeds, the total count is recognized as the running count. The running count divided by the number of decks already in play is called the true count number. And the higher the value from the true count, the better the odds for the user.