Magic Gopher game!

[Polyphony]

Can anybody figure out how this works? I am very curious... it is correct every single time XD I would love to program a simple application to use the same algorithm, but I'm too dumb to figure it out lol

http://www.learnenglish.org.uk/games/magic-gopher-central.swf

[relax]

sry but it dident say right awser to me

[silenthunder]

not the right answer for me either

[Polyphony]

It guesses mine every single time except when I "try" to win... I don't understand how I'm trying to win at a game like that xD

[DangerousLlama]

Didn't work for me.

But this guy always guesses right: http://en.akinator.com/personnages/ xD

[techb]

Didn't work for me.

But this guy always guesses right: http://en.akinator.com/personnages/ xD

Took it two tries to guess mine.

[Zesh]

Bitch, got it right the first time but the second time round, I when through it quicker and it got it wrong. Maybe its got something to do with time?

[s3my0n]

x and is an integer between 1 and 9 including.
y and is an integer between 0 and 9 including.

So (10x + y) is an integer between 10 and 99 including.
This is the integer that gopher asks you to chose.

The gopher then asks you to add the two parts of the double digit number together.
This is (x+y).

Then he asks you to substract your original number from this one.
That is:
(10x + y) - (x + y) = 10x - x + y - y = 9x

So now we know that this answer will always be a multiple of 9.

Now look closely at the symbol table. Every 9th symbol is the same.
And we know that our answer will always be a multiple of 9.
So the gopher just chooses the symbol that is at 0 or 9 or 18 or 27 and etc.