30
17 18 25 30 22 21 27 29 20 16 19 23 28 24 26 
30 21 20 29 18 24 17 26 23 25 22 28 19 27 16 
18 21 20 22 16 30 23 17 26 24 25 29 28 27 19 
18 20 29 25 24 17 27 16 23 26 22 28 21 30 19 
29 22 23 19 24 28 27 30 18 20 25 16 21 17 26 
21 24 18 20 25 17 26 27 19 22 30 28 29 16 23 
23 24 17 20 22 29 25 19 28 18 16 30 21 27 26 
25 23 21 17 20 19 18 30 24 22 26 28 29 16 27 
29 26 18 24 22 30 28 25 17 27 16 20 19 21 23 
20 19 21 28 25 18 30 27 24 22 16 29 17 26 23 
18 21 28 22 26 30 17 27 23 25 19 16 29 20 24 
27 26 29 21 22 23 17 30 25 18 28 24 16 19 20 
16 25 28 30 24 27 19 26 21 23 20 22 18 29 17 
26 22 18 27 19 25 16 23 29 28 17 30 20 24 21 
23 19 17 24 25 27 26 28 16 30 20 29 18 22 21 
9 13 12 6 7 5 14 1 8 15 10 4 3 11 2 
3 5 4 15 1 8 10 12 14 6 11 13 2 9 7 
1 11 8 7 15 4 5 6 14 12 3 13 9 2 10 
10 7 4 2 1 8 15 6 12 13 11 3 9 14 5 
6 11 4 5 14 13 3 9 10 15 7 1 2 12 8 
2 5 10 13 11 12 14 4 6 7 8 3 15 1 9 
13 10 15 11 8 4 1 14 2 9 5 12 3 6 7 
12 5 4 13 8 15 1 10 11 6 7 9 14 2 3 
7 14 1 2 15 9 11 6 12 4 13 5 10 3 8 
15 9 10 5 13 11 1 4 6 2 14 12 8 7 3 
13 1 4 9 3 12 10 6 14 7 15 11 8 5 2 
3 7 15 1 14 2 10 5 13 11 6 8 12 4 9 
11 2 12 9 7 4 5 10 15 8 13 3 1 14 6 
4 11 15 6 1 12 8 13 10 3 7 2 5 9 14 
1 11 15 5 13 3 8 4 7 2 9 12 6 10 14 
forbidden 1 18
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