Sudoku is a 9 by 9 box. it is divided into 9 groups of 3x3 boxes. you want to fill in numbers 1-9 and they can only repeat once in each column, row, and 3x3 box. (sorry if thats cofusing)

Yeah, loud music bothers me too. i keep my radio down low.

At first w/ sudoku, it would take a few days to complete one puzzle bc of concentration. now, i can pretty much finish one in a day.