Steve,

I think this would solution would work
For this puzzle
NUMBER_TO_REACH = 100
MAX_CHOICE = 10

Iif( Mod(NUMBER_TO_REACH,1000) = 0, 1, Mod(Mod(NUMBER_TO_REACH, 1000 ),MAX_CHOICE + 1 ) )

>Nadya,
>
>Whoever says 89 will win. So I extend that logic to say that whoever says 12 will win. I want to say 12, 23, 35...78, 89, then 100.
>
>So, if I go first, I say 1, and I will win every time. :)
>
>>
>>No, it's just a simple game. If you have somebody near you, you can play. Two players say aloud numbers, I just gave a sample of the two players and possible numbers. Each number should be greater than the previous (from 1 to 10). E.g. I can say 5, and you can say 15 (or 6,7,8, etc). The first player, who says 100 (but you can play for 200 or any number, you define), will win.
>>
>>My question is: who will win, if there is a strategy in this game, and what should be this strategy?