Sodoku

As mentioned by Kiruba, Sodoku indeed is an interesting game. Here is how i go by solving it:
1. Take a print out of the borad (from the web)
2. choose a line or a column or a 3 by 3 grtid that has the maximum number of filled numbers.
3. Write down the numbers that can occupy each cell in the chosen line/column/grd by verifying the line rule, column rule and the grid rule.
4. If successful, you can find the correct number in each cell.
5. If not, just move on to the next line/column/grid and try ur luck there
;-)

usually, i don't like to play real tough puzzles. But this is not tough...its interesting and logically solvable.

line rule: every row must contain only one copy of the digit from 1 to 9.
column rule: every column must contain only one copy of the digit from 1 to 9.
grid rule: every grid must contain only one copy of the digit from 1 to 9.