Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 9 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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