K&G Sudoku (UIQ) 1.0

K&G Sudoku (UIQ) is simple to play. The board is divided into 9x9 cells. The cells are grouped into nine 3x3 boxes. Some cells are prefilled with numbers. Your aim is to fill all empty cells so that each row, column and each 3x3 box contain all numbers 1-9. No numbers 1-9 should repeat within a row, column or any 3x3 box