Contact Blackjack Variants

The address is [email protected]. There is no form and no account to create. Write from any email address and in plain words, and you will hear back by email.

The site is about the rules of blackjack games and what those rules do to the odds. Questions on that subject are welcome, whether you have found a mistake, read a rule differently, or want to know why a figure on one page differs from a figure on another. Two pages can show different house edges for the same game because they assume different rules, and an email is a good way to find out which rule set a number belongs to.

If a rule, a payout or a house edge looks wrong, tell us which page it is on and what you expected to see. A link to the page, or its title, is enough to find it. If you have a source for the rule, such as the rules of play published by a regulator or the rule card from a casino, name it or attach it. We check each report against the source documents listed on the sources page.

When a report turns out to be right, the page is corrected. The figure or the wording changes, and where the change affects a calculation, every page that uses that calculation changes with it, because the numbers on the site come from one set of rules and one calculation. The methodology page explains how the figures are worked out, so you can see which assumption a number rests on before you write.

Sometimes a report shows that two documents disagree. One regulator may let the dealer hit soft 17 while another has the dealer stand. In that case the page names both versions and says which one the figure uses, rather than picking one quietly.

The play-money tables run in your browser. If a table does not load, deals cards that break the rules shown on the felt, or settles a hand in a way that does not match the page, please tell us what happened. It helps to include:

• the page and the game you were playing
• the cards you and the dealer held, and the action you took
• your browser and device, for example a phone or a laptop

A screenshot is welcome but not needed. The chips at the tables are play money, so no balance can be lost or recovered, but a table that settles a hand wrongly is a mistake we want to fix.

Regulators revise their rules of play, and casinos change the games they deal. If you know of a newer version of a document we cite, or of a regulator text for a game that the site currently describes from a casino-published sheet, send us the link. Each source on the sources page shows the date we read it, which makes it easy to see whether a newer version exists.

If your question is about your own gambling, or about someone close to you, the responsible play page lists free, confidential helplines for six countries. They can help far more than we can. Complaints about a casino, an account or a payout go to the casino first and then to the regulator that licenses it. The regulator's own website explains how to raise a complaint.