Sorry for the delay in answering,Slacker, but I have been away on a sunshine holiday- again.

I am continually surprised that people do not understand the block. I have no background in maths yet found it easy to understand.

There are 9 columns , each containing 4 numbers.Any block guarantees 3 wins in one of the 9 rows no matter the result. If three are guaranteed in a row then we have to consider ANY THREE FROM FOUR.

My GROUPS are simply the four consequent groups of 3 from 4.

These are , as anyone can see - ( 1 2 3 ) ( 1 2 4 ) ( 1 3 4 ) and 234.

Applied to roulette it would be foolish to bet the first two so we use these as indicators / triggers of what to bet on the third and fourth spin .

I suggested that if we chose to bet the 1-2-4 then until we know what the 1 and 2 are we do not know what the 3rd will be hence my 1 2 ? 4. It merely means that whatever the 3rd turns out to be determines what to bet on the 4th spin. Choosing to bet 1-2-4 means that we do not bet the 3rd of the 1 and 2 but put one point on each of the other two .No matter which one wins we put the resultant 3points on the 4th of the line beginning with the correct 1 and 2.

It is only elementary maths.Think of the results 4 football matches. Home Win -Away - Draw as the 3 in question and you might grasp the idea.

As with any new idea we need to put a little bit of thought into it . Hopefully this helps.