Forty five of
the numbers from 1 to 81 have been placed in the 9x9 grid given below.
|
|
12
|
|
60
|
|
74
|
|
45
|
|
|
30
|
40
|
53
|
|
11
|
|
63
|
68
|
73
|
|
|
71
|
|
29
|
|
52
|
|
10
|
|
|
15
|
|
2
|
|
81
|
|
44
|
|
31
|
|
|
47
|
|
18
|
23
|
1
|
|
76
|
|
|
65
|
|
61
|
|
46
|
|
13
|
|
3
|
|
|
9
|
|
80
|
|
67
|
|
34
|
|
|
54
|
32
|
37
|
|
4
|
|
79
|
56
|
69
|
|
|
55
|
|
49
|
|
39
|
|
6
|
|
Fill in the remaining numbers in
such a way that the sum of nine numbers in every horizontal row, every vertical
column, each corner to corner diagonal and every 3x3 box is 369
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