Weekly Extreme Sudoku Competition for Sep 11 to Sep 17
Number 521, Extreme
by Crosswords Ltd.
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259 people completed this puzzle correctly
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
G
H
J
4
7
6
1
5
3
2
8
9
8
2
5
4
9
7
1
3
6
3
9
1
2
6
8
7
4
5
9
8
3
6
1
5
4
7
2
5
1
4
7
3
2
9
6
8
2
6
7
9
8
4
5
1
3
6
4
2
8
7
9
3
5
1
1
3
9
5
4
6
8
2
7
7
5
8
3
2
1
6
9
4