Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Go back and make a different choice.

 

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

 

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