If I did have to find a way with the combo you show, I'd have to reduce each number to it's sum. Example, the first number you show is 13. 1+3=4 (sum)
So the combo above in your quote, ( 13-15-22-28-34-31) would read as follows: 4-6-4-1-7-4.
Now, the next step is to do this with every draw. Write the new conversion numbers underneath the oldest like so, below, (I'll make up numbers to save time)
4-6-4-1-7-4
5-6-3-2-9-1
Keep doing this with at least 14 days of coversion data. Look for patterns. Done. lol
But remember, when you pick one sum as a prediction, that sum has hundreds of thousands of combos associated with it.
For example, the sum 4 can equate to many one and two digit numbers. 0+4=4, 1+3=4, 2+2=4. So we have possible candidates, 04-13-22. That was just for the first number 13. lol You have to do this for the rest.
But really, if you reduce numbers to their sums, may as well study the p-3/p4 games first. Just a thought.
Good luck in your ventures. I love lottery system breaker idea people. lol. Sorry, the beer and weed is good...ha !