How do you play sadoku?

Question

I've got it on my mobile phone and there are no instructions

Answer 1

Okay this might sound confusing... there are the different boxes and the will be some numbers placed in the boxes already and it will have dark lines like in this picture..http://www.inertiasoftware.com/images/sa... then you want to number [in each box] 1-9 without repeats. Then when you look in columns and rows there souldnt be more than one of the same number. Its easy at first but then it gets real hard. I will edit if you need more help or dont get what I said.

Answer 2

The object of the game is to fill it in with the numbers 1-9 in each row, column and square.