Glossary/Card Counting FAQ
What do all those terms mean?
- Betting Correlation BC is defined as the correlation
between card point values and the effect of removal of cards. It is
used to predict how well a counting system predicts good betting situations
and can approach 1.00 (100% correlation). BC is particularly important
in shoe games (six or eight decks).
- Cover/Camouflage Betting or playing in a manner meant
to hide that you are a card counter.
- DAS Double after Split allowed. This rule allows doubling
down on hands that have been created by splitting a pair.
- Depth The number of cards or rounds that have been dealt
- Flooring In True Count calculations, rounds fractional
- H17 Dealer hits soft17
- Hi-Lo The Hi-Lo Blackjack strategy is a Level 1, balanced
strategy optimized for betting originally created by Harvey Dubner in
1963. The Hi-Lo strategy was later refined by Julian Braun, published
by Edward Thorp and published again by Stanford Wong.
- Ill18 Illustrious 18 are the 18 most important indexes
as defined by Don Schlesinger.
- KO KO stands for Knock Out Blackjack and also Ken and
Olaf, the designers of the KO Count. A very easy, yet powerful, unbalanced
strategy optimized for betting.
- Level The level of a strategy refers to the number of
different positive values assigned to cards. For example, Hi-Lo assigns
-1, 0 or +1 to cards and therefore is a level 1 strategy. Level 2 and
3 counting strategies are more efficient, but quite a bit more difficult
for most people. Level 4 & 5 card counting strategies also exist.
But this is overkill.
- LS Late Surrender allowed. The common form of Surrender.
The player can Surrender a hand (throw it in) for half of the bet after
the dealer has checked for Blackjack. If the dealer is not allowed to
peek and does not know if there is a dealer Blackjack then the Surrender
occurs only after the dealer checks for Blackjack and finds that it
does not exist.
- Penetration the minimum number of cards dealt before
- Playing Efficiency PE indicates how well a counting
system handles changes in playing strategy. Playing efficiency is particularly
important in handheld games (one or two decks).
- Risk of Ruin The probability that you will lose your
- Round In True Count calculations, round fractions to
the closest integer. Round up if exactly between two integers.
- Running Count The sum of the tag values for all cards
seen in the shoe.
- SCORE Standardized Comparison of Risk and Expectation.
This is a methodology used to rate Blackjack strategies and games that
includes risk. Essentially it is your win rate in dollars per hour assuming
100 hands per hour and a $10,000 bankroll using optimal betting and
a risk of ruin of 13.5%.
- Spread Your maximum bet divided by your minimum bet.
- Sweet 16 & Fab 4 The 18 most important indexes minus
splitting Tens. Most card counters avoid splitting Tens as it is noticed
by pit bosses. Plus the Fabulous 4 top 4 Surrender indexes.
- True Count The running count usually divided by the
number of remaining decks. Some card counting strategies divide by remaining
halfquarter or double decks and other methods of calculation also
- Truncate In True Count calculations, for positive numbers,
round fractional numbers down and for negative numbers round up.
Where are all the numbers?
I decided not to publish the numbers behind the charts because they
can change substantially depending on numerous variables. The attempt
here is to describe general relationships not exact numbers. I also
did not want to get into long discussions on the fourth decimal point
of some number.:)
How were the charts created?
- Penetration charts were created with the Casino Verite CVCX
Blackjack simulator Charts function.
- Bankroll/Hands/Risk charts were created with the Risk Calculators
function of the CVData
- Shuffle Tracking charts were created with the CVData/ST
- All other charts were created with the CVData
custom charting function.
- For practice software see Casino Verite
Blackjack Card Counting Games.
- For a comparison of strategies see Card