Daily Sudoku Competition for Dec 14

Number 4540, Tough - SOLUTION
328 people took an average of 20 minutes to correctly complete this puzzle

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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
2 7 1 9 8 5 6 3 4
5 6 9 4 2 3 8 1 7
3 4 8 6 7 1 2 9 5
7 5 2 8 1 9 4 6 3
8 1 6 5 3 4 9 7 2
4 9 3 2 6 7 5 8 1
6 2 7 1 5 8 3 4 9
9 3 5 7 4 6 1 2 8
1 8 4 3 9 2 7 5 6