Advantage Play & Game Integrity
Hi-lo system blackjack
A balanced blackjack card-counting method that tracks low cards (2–6) as +1, neutral cards (7–9) as 0, and high cards (10–ace) as −1, then divides the running count by decks remaining to get the true count.
Key points
- The Hi-Lo is a level-1 count: each card changes the running count by at most one.3
- A higher true count signals a shoe richer in high cards, guiding bet sizing and basic-strategy deviations.1
- The system is balanced: a full deck of 52 cards sums to zero.13
Where this term is used
Not the same as
- Hi-lo count blackjack — the same underlying concept, commonly just another name for the blackjack counting system itself
- Hi-lo blackjack card counting — the same general term, with 'card counting' making the advantage-play context explicit
Related terms
Advantage play
Hi-lo card counting
Covers the same counting system in a broader card-game context.
Advantage play
Blackjack card counting
The general practice of tracking card ratios to gain an edge.
Advantage play
Blackjack true count
The running count adjusted for the number of decks remaining.
Advantage play
Running count blackjack
The raw tally of card values seen so far, before deck adjustment.
Advantage play
Shuffle tracking blackjack
A different advantage-play method that follows clumps of cards through the shuffle.
Advantage play
Edge sorting blackjack
A distinct advantage-play technique exploiting manufacturing imperfections on card backs.
Sources
- Introduction to the High-Low Card Counting Strategy wizardofodds.com Defines the card values, true count calculation, and use of the Hi-Lo system.
- Card Counting in Blackjack - Introduction & Basics wizardofodds.com Explains the running-to-true count conversion and the system's application to shoe games.
- Card counting en.wikipedia.org Confirms the card values, level-1 classification, and balanced nature of the count.
Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.