Weekly Extreme Killer Sudoku Competition for May 21 to May 27

Number 557, Extreme
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Future Puzzle - will be submitted on the relevant day

1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
7
 
12
14
 
20
 
19
 
8
16
 
5
 
 
 
 
18
 
 
9
 
31
6
28
 
 
20
 
 
 
 
 
 
 
 
 
28
 
 
 
 
 
 
16
21
 
 
17
 
13
 
 
 
 
 
 
 
 
 
 
8
13
 
17
15
 
11
 
9
 
 
 
 
 
 
11
 
 
13