This system works best when you wager the true count, rounded down as needed, times your betting unit. Most players use the table minimum as a betting unit, so you can simply wager the true count times the table minimum.
THE RUNNING COUNT
Starting with 0, change the count by the following indices whenever you see the corresponding card appear...
2 = +2.5
3 = +3.0
4 = +4.0
5 = +5.0
6 = +3.0
7 = +2.0
8 = +0.0
9 = -1.5
10 = -3.5
Ace = -4.0
This cumulative total is your running count.
THE TRUE COUNT
In order to bet properly, the running count must be divided by the approximate number of decks which remain in the shoe. Again, estimating either from the size of the discard tray or the shoe, determine how many decks remain. The true count = ace adjusted count √∑ decks remaining.
WAGERING
• For any negative count, or a count of zero, bet the table minimum.
• For any positive count, wager the true count number times the table minimum, or, as discussed above, wager the true count times your betting unit.