Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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