What's it all about?
The goal of Sudoku is to fill all the blank squares in the grid with the correct numbers. In Sudoku Quest, this is done by placing the mouse over a blank square, left-clicking and pressing a number
key 1-9.
How do you know which numbers to place in the empty squares? that's the fun part! Using logic and deduction, you can always work out which numbers go in which squares.
To know better,just copy this link
http://www.su-doku.net/howtoplay.php