Hi-Lo Card Counting System for Blackjack | Learn with Blackjack Counter Pro

Hi-Lo: The Master Guide That Changed the Game

The most popular card counting system, explained step-by-step so you can master it in any casino worldwide.

May 2, 2025 • Noé Domínguez Aldana • 10 min read • Tags: #Level 1#HiLo#Blackjack

Learn in depth how it emerged, how it works, and how to make the most of it. Ready to become a counting master?

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Introduction

Hi-Lo is not just a counting system — it's the tool that shook the casinos of Las Vegas. Since 1963, professionals like Edward Thorp took a gamble and changed blackjack history.

Theoretical Foundations

1963: Harvey Dubner publishes the first version.
1966: Edward Thorp popularizes the method.
Core: Value assignment (+1, 0, −1).
Requirement: Know basic strategy 100%.

“Hi-Lo is simplicity elevated to an art. All you need is memory and discipline.”
Edward Thorp, Beat the Dealer

How It Works

Breakdown of card values and True Count calculation to maximize your edge.

Cards 2–6: +1

Cards 7–9: 0

Cards 10–A: −1

True Count = Running Count ÷ Decks Remaining

When Should You Raise Your Bet?

Once the True Count is positive, the odds start to shift in your favor. Many players begin raising their bets when the True Count reaches +2 or higher.

For example: if you normally bet 1 unit, you might raise to 2 units at +2, 3 units at +3, and so on. This progressive system is known as bet spreading.

Keep in mind: solid bankroll management and discreet behavior are key to avoiding casino suspicion.

Pros, Cons & Advanced Tips

Pros

🔹 Very easy to memorize
🔹 High accuracy
🔹 Only requires practice

Cons

🔸 Detectable by casinos
🔸 Counting rhythm can break with distractions
🔸 Less effective in single-deck games

Advanced Tips

🔹Camouflage your bets: Slightly vary them to avoid raising red flags.
🔹Strategy deviations: Stand or double down based on True Count.
🔹Bankroll management: Define bet units based on True Count.

References

🔹Thorp, E. (1966). Beat the Dealer. Random House.
🔹Griffin, P. (1999). The Theory of Blackjack.

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Last updated: 2025/05/25

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