Woody, I found that people use different methods to get their stacks.
If you read the begining message, you saw that I had two different methods and ask which one was correct. I received several replys and all had a different method. I can explain the two I started with and maybe the other members who posted their method will explain how they came up with their stack.
1. start with the number that fell in your state today.
let say it's 123. 2. make the tic tac toe marks on paper.
3. Start at the 3 and count up 1. 3+1=4 place the 4 in the box next to the 3 from the left side add one to 4 and put in the next box continue until you get to the 1 skip the one and continue your count up by 1. OK this one I call the plus + because I added one.
4. Next do the same with your 123 but this time minus 1 for the 3 and continue until you get to the 1 skip over the one and continue your count.
This one I call minus - .
emilyg's stacks her numbers a different way. She places the number that fell that day in a straight line and have several ways of getting the other numbers.
I hope this helps,