Place a number from 1 to 9 in each empty cell,
3x3 area bounded by bold line (nine blocks) contains all the number from 1 to 9.
The Sudoku starts with a partially filled grid and you must complete the grid
while following the rules above. If you complete the grid, you've solved the sudoku.|
Example : take a look at the grid above, and let's try to place the number 6 in the first 3x3 area,
click here to watch the animation
- the number 6 is already in the 1rst line and in the 3rd line,
- so, the number 6 is in the 2nd line
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