Daily Killer Sudoku for Jul 30

Number 858, Tough

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1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
20
 
16
 
27
 
18
 
 
 
 
 
 
 
 
 
12
6
15
 
 
4
 
13
16
 
 
21
 
 
 
16
 
 
9
 
9
 
 
19
 
 
19
 
 
15
 
17
 
 
11
 
 
 
8
9
 
 
6
 
19
 
 
 
 
20
19
 
25
 
16