A
4
8
7
1
B
1
3
4
6
8
9
C
6
0
5
3
9
8
D
9
3
5
6
8
1
7
0
E
4
7
1
9
5
F
7
6
9
1
5
3
4
G
1
8
9
2
0
4
5
6
3
H
3
8
0
7
1
6
I
3
7
6
0
8
1
5
J
8
2
4
5
9
0
7
A
B
C
D
E
F
G
H
I
J
Click on a white box to add a number.
You can only change the numbers you place on the board
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