Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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