Langer's Sudoku Assistant

Invalid Sudoku!

Row 2 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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