Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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