I received a question from a member of our website recently asking why some of the numbers on our deviation chart are different from what they have seen in another book or website.
Deviation charts can vary slightly, depending on
1. the rules, number of decks, penetration, etc that you’re assuming
2. your strategy for calculating the true count
3. the number of hands that you ran your simulation generator for
We ran our deviations based on the games that we most commonly played and how we calculate the true count. We ran a ridiculously long simulation. So I trust it’s accuracy. Also, keep in mind that the net effect of slight deviation differences between one chart and another are most likely fractions of pennies on the dollar. So if one chart says stand a 12 v. 3 at 2, and another says stand a 12 v. 3 at 1, the actual number may be something like 1.5, so there’s not a massive difference between the 2. You shouldn’t see different themes in deviations. For example, if our chart says to split 10’s against a 6 at a true 4 and above while another chart says to split 10’s only at negative counts, then there’s something wrong with the other chart!
Hope that helps clarify!


