Weekly Extreme Killer Sudoku Competition for May 12 to May 18

Number 660, Extreme
by Crosswords Ltd. April puzzle packs Now Out!. Thanks for supporting our site.
138 people completed this puzzle correctly
1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
6
8
2
3
5
4
9
7
1
9
4
3
7
6
1
2
5
8
1
7
5
8
9
2
4
6
3
4
2
8
6
1
5
7
3
9
3
9
6
4
2
7
1
8
5
5
1
7
9
3
8
6
2
4
8
5
4
2
7
9
3
1
6
2
3
9
1
8
6
5
4
7
7
6
1
5
4
3
8
9
2

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