Weekly Extreme Killer Sudoku Competition for Dec 2 to Dec 8

Number 637, Extreme
by Crosswords Ltd. September puzzle packs Now Out!. Thanks for supporting our site.
147 people completed this puzzle correctly

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

You have selected colour for printing.
You may have to go into internet options and tick the box to allow print backgrounds to allow printing in colour