THE RULES of Sudoku are simple:
Rule 1.
Each line must contain the numbers 1 to 9.
Rule 2.
No number can be repeated in the same line or column
Rule 3. No number can be repeated in the same
3x3 box.
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Examples:
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Rule 1:
Each line must contain the numbers 1 to 9
|
|
1 |
2 |
3 |
10 |
12 |
3 |
4 |
8 |
7 |
|
2 |
7 |
4 |
6 |
9 |
0 |
8 |
5 |
3 |
This is wrong,
because the numbers
10, 12 and 0 are used.
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|
1 |
3 |
6 |
5 |
4 |
3 |
9 |
8 |
7 |
|
2 |
7 |
4 |
6 |
9 |
7 |
1 |
5 |
3 |
This is correct. |
Rule 2: No number can be repeated in the same line or column
|
|
1 |
2 |
3 |
5 |
5 |
3 |
4 |
8 |
7 |
|
7 |
6 |
4 |
1 |
9 |
3 |
2 |
5 |
4 |
This is wrong,
because the numbers 5
appear in the same row and number 3
appears twice in the same column.
|
|
1 |
2 |
3 |
5 |
5 |
3 |
4 |
8 |
7 |
|
7 |
6 |
4 |
1 |
9 |
3 |
2 |
5 |
4 |
This is correct. |
Rule 3: No number can be repeated in the same 3x3 box.
|
|
This is wrong,
because the number 2
appears twice times in the same 3x3 box.
|
This is correct. |
NOTE:
In Super Sudoku 3x4 grids, numbers
should be in the range 1-12
In Baby Sudoku 2x3 grids, numbers should be in the range 1-6
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