Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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