The Chance-Skill Blackjack System
The Chance-Skill system is best understood as a historical three-part study plan—basic strategy, probability awareness and a simplified count—not as a way to predict card runs or guarantee profit.
Historical attribution
An earlier CountingEdge account attributed the method to Thomas Cate and the 1984 Gambling Times title Systems That Win, Volume 2. That attribution has not been independently corroborated here against the original edition. The simplified tags described below explain the earlier account; they do not establish the book’s complete instructions or validate a profit claim.
Chance: the order is unknown
A shuffle produces an unknown order. Short streaks occur naturally, but recent wins or losses do not make the next independent result “due.” In a persistent shoe, composition changes as cards are removed; that is different from predicting a run.
Skill: decisions can be measured
Basic strategy selects the play with the best expected value for the player’s cards, dealer upcard and table rules. It can reduce the cost of errors, but it cannot make every hand win. Use the rule-matched basic-strategy chart until decisions are automatic.
The simplified count
The historical page used +1 for 3–6, −1 for ten-value cards and zero for other ranks. That tag set is balanced over one deck: sixteen positive cards and sixteen negative cards. A complete method still needs true-count guidance for multiple decks, a validated betting ramp, playing indices and stated game assumptions.
Calling a positive running count a prediction is inaccurate. It is only a composition estimate. Compare it with the documented Hi-Lo system before deciding which method to practice.
A count example: balanced does not mean interchangeable
Start at zero and expose 3, 6, ace, king and 8. With the historical tags above, the changes are +1, +1, 0, −1 and 0, giving a running count of +1. With Hi-Lo, the ace contributes −1, so the same cards produce zero. The Hi-Lo explanation by mathematician Michael Shackleford assigns +1 to ranks 2–6, −1 to ten-value cards and aces, and zero to 7–9.
Do not combine one system’s tags with another system’s betting thresholds or playing indices. A balanced full deck returning to zero checks the arithmetic; it does not prove that the system estimates advantage accurately or that you counted every card correctly. Two opposite tagging mistakes can cancel. During practice, check the intermediate count as well as the final total.
Shoe depth matters too. A running count of +4 with about 2 decks remaining represents a different concentration of the tagged cards from +4 with about 4 decks remaining. Dividing gives +2 and +1 respectively, but those arithmetic results are not validated wagering thresholds for this historical method. A complete method must specify its conversion, rounding and game conditions.
Keep strategy errors separate from counting errors
Before attempting both tasks together, classify hands correctly: ace–6 is soft 17 because the ace can still count as 11; 10–7 is hard 17. Look each hand up against the relevant dealer upcard and rules. Record the recommended decision and your answer before revealing the outcome. Winning after an incorrect decision does not make it correct; losing after the recommended decision does not show that the chart failed.
Then practise tagging separately, using visible cards only. Once those exercises are accurate, combine them in a rule-matched practice game. Record decision mistakes, count mistakes and deck-estimation mistakes separately so that you know which skill needs work.
Bankroll and bet sizing
A bankroll multiple cannot guarantee survival. Risk depends on the edge, variance, bet spread, hands played and tolerance for drawdown. Use the risk-of-ruin guide rather than a round-number rule copied from an old system.
A defensible four-step practice plan
- Choose the exact rule set and learn its basic strategy.
- Practice the count away from a casino and verify every deck.
- Simulate or otherwise validate the count, indices and betting ramp for the intended game.
- Set stop conditions and an affordable loss limit before any live test.
What the system cannot do
It cannot forecast a particular card, carry useful shoe information into an independently reset round, guarantee access to a casino, eliminate variance or make a losing betting progression profitable.
Further reading
Treat this page as a historical review and practice framework. It is not a recommendation to gamble or a promise that readers will beat the casino.
