Hi Terminator, glad you like the progression. It's actually a sort of "universal" progression in that it can be used for other bets, not just 2-1. According to Holloway in his book, "Full Time Gambler", there are two ways to use it:

1. The "rise and fall" way. This is as I described it earlier, but you can also use it with odds other than 2-1. After a win you move back as many places as the odds to 1. e.g. if using it with a double street (5-1), after a win you would move back 5 steps. When you get back to step one you will be in profit.

2. The "no retreat" way. In this case you continue to move up the progression until you have a new high (regardless of whether the prior result was a win or loss), then reset to one.

I didn't post the full progression, which is actually this:

1,1,1,1,1,2,2,2,2,3,3,3,4,4,5,5,6,7,8,9,10,11,12,14,16,18,20,22,25,28,30,32,35,40,45,50,55,60,70,80,90,100,110,120,135,150

It's based on a fixed percentage scale, so successive steps are generated by multiplying the current value by a fixed % and then rounding (the above uses about 10%). So you could generate your own progressions using different percentages. e.g. if using 20% you proceed like this:

1. 1

next step is 1.2 x 1 = 1.2 (1, rounded)

2. 1

next step is 1.2 x 1.2 = 1.44 (1, rounded)

3. 1

next step is 1.2 x 1.44 = 1.728 (2, rounded)

4. 2

next step is 1.2 x 1.728 = 2.074 (2, rounded)

5. 2

and so on. Get the idea?