The High-Low Card Counting System Explained
The High-Low system (or Hi-Lo) is the most widely used card counting strategy in the world. Introduced by Harvey Dubner in 1963, it strikes the perfect balance between power and simplicity.
Why It Works
Blackjack is beatable because the odds change as cards are removed from the deck. The High-Low system tracks this change by assigning a value to every card.
- Small cards (2-6) are bad for the dealer but good for the player. When they are removed, the deck becomes richer in high cards.
- Big cards (10-Ace) are good for the player. They increase the chance of Blackjacks (which pay 3:2) and cause the dealer to bust.
The Values
Every card has a tag:
How to Practice
Don't start betting money until you can count down a single deck in under 30 seconds with zero errors. Start slow. Use our free trainer to build speed.