Hi-Opt II Card Counting | Advanced Accuracy for Blackjack Pros

Introduction

Hi-Opt II is an ace-neutral system: it counts high and low cards without affecting Aces, which are tracked separately.

Origins & Philosophy

1970s: Developed to enhance Hi-Opt I.
Edge: Greater precision by isolating Aces.
Requirement: Maintain an additional Ace side-count.

With Hi-Opt II, recovering a single Ace is a tenth of a percent in your favor.
Everett “Chief” Fox

How It Works

Assign values to card groups and adjust your bets based on the ratio of high to low cards remaining.

True Count = Running Count ÷ Decks remaining

When to Increase Your Bet

Ideally, increase your bet when the True Count is +2 or higher, adjusting for the Ace side-count.

Pros, Cons & Advanced Tips

Pros

🔹 Greater ace-neutral precision
🔹 Extra edge from Ace side-count
🔹 Scalable for multi-deck games

Cons

🔸 Requires two separate counts
🔸 Higher mental load
🔸 Easier to detect in slow-paced games

Advanced Tips

🔹 Drill the side-count until it’s automatic.
🔹 Keep base bets low; increase only when TC ≥ +2.
🔹 Disguise bet changes with natural gestures.

References

🔹Wong, K. (1975). Professional Blackjack.
🔹Revere, J. (1980). Hi-Opt II Blueprint.

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Last updated: 2025/05/25

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Hi-Opt II: The Precision Ace-Neutral System