Hi-Lo Card Counting System: Running and True Count

Step 1: learn the card tags

Hi-Lo values used by the trainer.
Cards	Value	Meaning after removal
2, 3, 4, 5, 6	+1	Relatively more high cards remain
7, 8, 9	0	Running count does not change
10, J, Q, K, A	−1	Relatively fewer high cards remain

Hi-Lo is balanced: the tags in one complete 52-card deck sum to zero. A fresh shoe therefore starts at running count 0 and would return to 0 if every card were exposed and counted correctly.

Step 2: keep the running count

Begin at zero after the shuffle. Update only when a card becomes visible. Do not count a face-down dealer hole card until it is revealed.

Worked sequence: 5, K, 8, 3, A, 6 gives tags +1, −1, 0, +1, −1, +1. The running count progresses 1, 0, 0, 1, 0, 1 and finishes at +1.

Cancellation speeds up practice: a low card and a high card total zero. In the example, 5/K and 3/A cancel, leaving only the 6 at +1 while the 8 is neutral.

Step 3: convert to true count

True count = running count ÷ estimated decks remaining

If the running count is +8 with four decks remaining, the true count is about +2. If only two decks remain, the same running count is about +4. For a negative example, −6 divided by three decks is −2.

Rounding conventions differ between systems and index tables. Use the convention required by the exact reference you are studying. Third Base displays the direct quotient rounded for the interface and does not currently grade index deviations.

Step 4: practise deck estimation

The simulator knows the precise number of cards left, so its deck estimate is exact. At a physical shoe, a learner must estimate the discard volume. Start with whole decks, then half-decks, and avoid pretending to have more precision than the visual estimate supports.

Running +4 with four decks left: approximately true +1.
Running +4 with two decks left: approximately true +2.
Running +4 with half a deck left: approximately true +8, but late-shoe procedures and cut-card placement matter.

Drills in increasing difficulty

Tag recognition: say only +1, 0, or −1 for individual cards.
Cancellation: remove low/high pairs before updating the total.
Single-deck check: count an entire shuffled deck; the final result must be zero.
Running count with play: maintain the number while making basic-strategy decisions.
True-count conversion: pause at set intervals and divide by a stated deck estimate.
Error recovery: if the final balanced-deck count is not zero, slow down rather than guessing where the error occurred.

Enable “Show true count” in the trainer to check arithmetic, then hide it to test recall.

What the number does—and does not—say

A positive true count means the remaining composition is richer in high cards relative to the fresh-shoe baseline measured by Hi-Lo. It does not say the next card will be high, that the player will win, or that a particular wager is appropriate.

Turning a count into play deviations or wagering decisions requires additional rule-specific analysis, error control, risk tolerance, and legal/venue awareness. Third Base intentionally stops short of recommending a bet spread.

Sources and next lesson

The card tags and true-count relationship match the implemented Third Base methodology and the independent Wizard of Odds Hi-Lo introduction. Read Card Counting Fundamentals for limits and learning order, and Responsible Gambling for support information.