iterate x times,
iterate result x times, call answer y,
replace x with y and repeat lines 2-4 y times
call result z
iterate lines 2-5, replacing x with z, z times
call result w
a=largest number expressible with above notation with z symbols
b=largest number expressible with a symbols
repeat finding largest expressible number b times
Oh wow! Couldn't you have started with 1 or something?
MathsIsFun: Are there rules?
eg. What size board?
I notice that the players seemed to take something from the previous play and edit it. Is that a rule?
Words seem to be allowed so why not "The number he just wrote plus 1". That would fit easily on most boards.
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei