Version française
The Red Seven
Presentation
The Red Seven system is described in Arnold Snyder's book
" Blackbelt in Blackjack " and on The
Easy Red 7 Card Counting System page.
This is a level 1 count, unbalanced, without conversion to True
Count at the base.
Its particularity is to count
differently the 7 reds (+1) and the 7 blacks (0).
It presents, in the eyes of many, several
defects:
-
Without
conversion to True Count, it does not allow to evaluate the advantage
of the player with precision.
- The
distinction between the 7 reds and 7 blacks seems to add a difficulty
to the KO that counts all 7 to +1
- The
ramp proposed by Arnold Snyder, including in the latest version of
2005, is too slow to be effective.
- The
indices generated by CVIndex, the CData index generator, are aberrant
due to an unpatched bug, including in version 5.0.145
Point 3 is immediately set using the optimized
ramp provided by CVIndex
Point 4 is bypassed using an average value of
0.5 for all 7
Point 2 is a matter of habit but may be
problematic for some.
The problem raised by point 1 is common to all
counts without conversion like the KO
The Red Seven does not seem to present major
difficulties but no benefits on the KO
But ...
The transition to True Count
The Hi-Lo completely ignores the 7 and the KO
gives it +1, like the other low cards.
But the EOR (Effect Of Removal) 7 is 2 times
less important. To give it +0.5
would be logical, but would turn the system into a level 2 count that
is more difficult to grasp.
The trick of counting only the 7 reds (or
blacks if you prefer) keeps level 1 without significant loss of
performance as the simulations show.
More importantly, the Pivot is at IRC + 2N if
N is the number of games.
For example for 6 games and the IRC
traditionally at -12, the pivot is at 0 (-12 + 2x6)
It's important to differentiate between a unbalanced count and a count without conversion to True Count.
ALL
accounts can be used in True Count.
Balanced accounts like HiLo are only easier to
convert to True Count (and actually work very poorly without conversion)
I refer to EZ-TKO for further explanation
and conversion formulas.
The Pivot is the Running Count for which the
True Count and therefore the advantage is known and constant throughout
the game.
Below the Pivot, the player, who knows only
the "average" True Count corresponding to his Running Count,
underestimates the advantage at the beginning of the shoe and
overestimate it at the end.
In the case of the KO, it is a True Count of
+4, that is, in the majority of games (Early Surrender apart) where the
player's advantage increases to about + 1.5%
In the case of Red Seven it's +2, about 0.5%
advantage.
There are no under-evaluation or
over-evaluation below the pivot.
And most importantly, converting to True Count
is much simpler.
Use the True
Count Converter to determine the
True Count based on the advance in the shoe and the Runing Count.
For the KO
... it's chaos.
But for Red
Seven the start of ramp will be 0
regardless of the depth in the shoe.
TC of +3
will be at 6, 5, 4, 3, 2, 1 ...
TC of +4
will be at 12, 10, 8, 6, 4, 2
Performances
A comparison,
among others, of the performances of KO, Red Seven and Red Seven
with conversion to True Count.
Everyone can decide whether the game is worth the effort.