Red 7
EasyProColor values
Red 7 is an unbalanced system with an easy-to-follow count, treating red sevens as positive.
- Level
- 1
- BC
- 98%
- PE
- 54%
- IC
- 78%
| A | 2 | 3 | 4 | 5 | 6 | B7 | R7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| -1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | -1 |
Systems
Red 7
Arnold Snyder’s unbalanced count from Blackbelt in Blackjack (1983). Count red sevens +1; leave black sevens at 0.
The values
How the values work
Arnold Snyder published Red 7 in Blackbelt in Blackjack in 1983. It is Hi-Lo with only the red sevens added as +1. That half-deck of extra pluses unbalances the count so you can skip true-count conversion.
IRC is number of decks × −2. A six-deck shoe starts at −12. Black sevens are 0; red sevens are +1.
+1
2, 3, 4, 5, 6, red 7
Low cards plus red sevens only.
0
black 7, 8, 9
Black sevens are ignored. Eights and nines are neutral.
−1
10, J, Q, K, A
High cards, aces included.
Extra tracking
Color values
Black vs red
Sevens are the only rank that changes with color. Hearts and diamonds are red; spades and clubs are black. Miss the color and the imbalance — the whole point of Red 7 — is wrong.
| Rank | Black | Red |
|---|---|---|
| 7 | 0 | +1 |
Black is spades and clubs. Red is hearts and diamonds. The app splits these ranks in Memorize.
The math
Running count, no true count
Start from the IRC
Red 7 is unbalanced. Start from the IRC and add values. You do not divide by remaining decks.
Initial running count = number of decks × −2. When the running count crosses the key count, raise the bet.
Efficiency
Why the numbers look like that
Red 7’s correlations sit next to KO. The suit check is the extra work; the payoff is no true count.
BC
98%
Betting correlation
Betting correlation of 98%.
PE
54%
Playing efficiency
Playing efficiency of 54%.
IC
78%
Insurance correlation
Insurance correlation of 78%.
In the app
Practice Red 7 on iPhone
Red 7 is a Pro system. Memorize splits red and black sevens. Running Count starts from the Red 7 IRC.
Memorize
Drill the Red 7 values until every rank is automatic.
Running Count
Start from the initial running count, then add every card as it comes off the shoe. IRC is decks × −2.
IRC
No true-count conversion. Bet and play off the running count once it crosses the key count.
Keep exploring
More from the app
Features
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Read more →Practice Red 7 on iPhone.
Pro Mode unlocks Red 7. Drill the red-seven split, then keep a running count from the IRC.
