>>>>>>Iif( Mod(NUMBER_TO_REACH,1000) = 0, 1, Mod(Mod(NUMBER_TO_REACH, 1000 ),11 ) )
>>>>>
>>>>>I'm not sure, need to think. For 100, it's 1, for 200 it's 2, for 300 it's 3, etc.
>>>>
>>>>I think at after 1000 it starts all over again back at 1 again.
>>>
>>>Right, but we assumed, that number should be round, e.g. 100, 200, 300. What if it's any integer number greater than 10?
>>
>>Actually, I modified the formula to look like.
>>Iif( Mod(NUMBER_TO_REACH,1000) = 0, Mod( NUMBER_TO_REACH, MAX_CHOICE + 1 ), Mod(Mod(NUMBER_TO_REACH, 1000 ),MAX_CHOICE + 1 ) )
>>
>>It turns out that if you get back 0, the first person loses. And that's the case if Mod( NUMBER_TO_REACH, MAX_CHOICE + 1 ) = 0.
>>
>>So If
>>NUMBER_TO_REACH = 20
>>MAX_CHOICE = 9
>>
>>Player 1 will lose.
>
>Player 1 says 9 and win. In this game player one will always win as long as number is greate than 11.
In this example the MAX_CHOICE is the highest number the player can choose so 9 instead of 11 is the max.

1 says 9
2 says 10

Now whatever player 1 says
2 says 20 and wins.

1 says 19
2 says 20 and wins.