The En Prison Rule

by on October 11, 2012

You won’t see this everywhere, but if you do come across a casino or even just a table playing the En Prison rule you’re in luck.    It actually works in favor of the player and greatly increases the chances of winning particularly if you tend to place a lot of outside bets.  There are quite a few of these rules, and in the best casinos you’ll find most of them.  However it’s becoming increasingly hard to locate casinos that allow En prison and associated rules like Le Partage.  It’s actually very similar to the Surrender rule which you’ll also find explained on this site.

En Prison Rule

It’s pretty straight forward,  if you make an even money bet such as odd/even or black/red and the ball lands on the zero then you don’t automatically lose your stake.  In this situation the stake is considered ‘En Prison‘ and locked until the next spin of the wheel.

So your stake must remain on the table in the same place, and if it wins on the next spin it is returned to you (but without winnings).   If your bet loses then you lose your stake as normal.  Another zero means that the stake remains on the table and stays there until a non-zero comes up.

So when your stake is En prison (it stays in the same place) and the rule is as follows

  • If your bet wins you get your stake back without winnings.
  • If your bet loses then you lose the stake
  • If another zero is spun the stake stays in position.

It doesn’t sound that great but in fact it does significantly alter the odds you are playing against.  It alters the house edge in a European Casino from 2.7% advantage to a rather low 1.35% although this is obviously only for those outside bets affected by the rule.   These extra rules are especially helpful in certain roulette systems, for example the En Prison Rule makes the martingale system a little more viable (although house limits will still make it unplayable in  most instances).   You can find details on this site and there’s also a le partage pdf available from the rules section of this site.

If you play in the US it’s even more difficult to find these special rules like enprison which offer advantages to the player.  You very rarely find them in online casinos such as these. Unfortunately casino’s in the US have become much more commercial and are gradually reducing the odds of players winning.  Already an American roulette wheel significantly increases the house edge by adding an extra zero to the wheel.  Removing advantageous rules like En Prison and Le Partage is merely the next step.



Leave a Comment

Previous post:

Next post: