Hello,

I have forgotten the english word that describes the following type of progression/system:

We bet mentally on both EC (Black and Red) with a specific progession(martingale for example).
The actual bet that we put on the table is the result of subtracting one bet from the other.
For example, if according to our two progressions we should bet 2 units on red and 3 units on black, our actual bet is 1 unit on black.

There are various such systems. I have forgotten what they are called. What word should I use to describe such a system?
"(Supplementary? Complimentary? Contrary? Cumulative?) betting"?
I know there is a specific word for it. I have read it many times but I have forgotten it.
Do you know how we call such a system in english?

Thanks for your help.

Are you referring to "Differential Betting"?

Nick

Yep!
Nick you're the man!
Thanks