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