Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 3 is invalid. The bottom left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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