Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

1
9
6
3
1  2  3
4  5  6
7  8  9
2
8
4
5
8
4
1  2  3
4  5  6
7  8  9
7
6
9
3
1
1  2   
       
       
5
2
3
4
1
8
6
9
7
9
3
1
5
6
1
2
7
8
5
7
8
2
1
3
4
9
6
2
       
4     6
       
       
4     6
       
7
8
9
3
5
1
       
4     6
       
1
3
       
4     6
       
5
4
7
2
9
9
5
5
1
3
7
6
8
4
8
7
       
4     6
       
9
       
4     6
       
2
1
3
5

 

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