Weekly Extreme Killer Sudoku Competition for Dec 23 to Dec 29

Number 640, Extreme
by Crosswords Ltd. March puzzle packs Now Out!. Thanks for supporting our site.
152 people completed this puzzle correctly

1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
3
8
4
2
7
1
5
6
9
7
2
9
4
5
6
1
3
8
5
1
6
8
3
9
2
4
7
1
4
2
5
8
7
6
9
3
6
7
5
9
1
3
8
2
4
8
9
3
6
4
2
7
5
1
2
3
8
1
9
5
4
7
6
9
6
1
7
2
4
3
8
5
4
5
7
3
6
8
9
1
2

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