Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 3 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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