I worked on serach3x3.py today. I got action done. It now fills in a sector within
one second. This could be faster but for now its fast enough to move on. I also
clarified the search3x3 function so that there is some commented out code that
we need to work on for this to work. Also, isFilled and isEqual were made so
that they take advantage of the square function. isEqual is no loger be needed
but I kept it just in case.