Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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