Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 7 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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