Five Card Charlie, and Why You Will Rarely See One

Updated

A Charlie means that if you draw a set number of cards without busting, you win immediately regardless of the dealer. We computed what each version is worth, and the five-card version is worth 1.54% — enough to hand the game to the player outright.

The short version
Every figure here is computed with our own solver and checked against an independent reference. The calculator applies the same numbers to your table.

What each version is worth

Computed for a six-deck game with the player re-optimising: with a Charlie available you correctly hit some hands you would otherwise stand on, because reaching the card count becomes a live way to win.

The collapse from five to six cards is the whole story. Reaching five cards without busting happens often enough to matter; reaching six is rare, and seven is almost never.

Six-card Charlies do exist, and we are aware of exactly two live tables that offer one: Evolution’s Infinite Blackjack and Pragmatic’s ONE Blackjack. We compute the rule as worth 0.160% at both.

5-card Charlie 1.54% to you 6-card Charlie 0.153% 7-card Charlie 0.011%
Each extra card required cuts the value by roughly a factor of ten.

Why five-card Charlies barely exist

Because 1.54% is more than three times the house edge of the game. A table offering a genuine five-card Charlie with otherwise normal rules would be giving money away.

Where you do meet one, look for what pays for it — usually a 6:5 payout, restricted doubling, or a variant rule such as the dealer pushing on 22. Add up the whole table rather than the headline rule.

Where Charlies actually appear

Six-card Charlies are the common live-dealer version — Evolution's Infinite Blackjack has one — and at 0.153% the operator can afford it comfortably.

Seven-card Charlies appear in some variants as a nominal bonus. At 0.011% it is worth about a fiftieth of the soft-17 rule — a marketing line rather than a rule.

How it changes your play

A Charlie makes long hands valuable, so with four cards and a low total you hit hands you would normally stand on — a four-card 15 against a weak dealer becomes a hit, because one more card either wins outright or busts you.

The effect is confined to hands with three or more cards, so the chart you already know is right for the first decision. Only the follow-ups change.

Keep reading

Infinite Blackjackwhich has a six-card Charlie Every rule, pricedin context The rulesthe standard game

By Martin Kosek · every number on this site is computed by us, not copied.

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