Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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