Remember that game? I'm working on a System that uses that strategy. I divide up the 120 6-way numbers and the 100 doubles(90). Started by cutting them in half and then into quarters etc. Sometimes it really works well when your stuck.
There are 55 numbers in each quarter. a 12345 b 67890
c. 12345 d 67890
If you see hits for several days like: a3. b4. a1. a4. b7. b7. a2 . then you know a hit is close for either c or d bottom half .
It works best when you see several days together and all the hits are in all but one of the quarters. aabc abbc ccba aac then that d quarter starts to look real good as the next place to ponder. I put a dot next to the numbers as they hit. Kinda rare to get a number with 2 dots next to it for several months at the first of each year. Really starts to cut down the numbers in each area. After awhile you do have to worry about come-back numbers. More on the 6-ways than the doubles, ofcourse.
Can anyone think of some other ways to cut these up?