20
17 13 20 18 12 16 15 11 19 14 
13 12 18 16 17 15 20 11 14 19 
16 11 19 12 17 20 18 15 13 14 
12 16 14 15 11 20 13 18 17 19 
18 20 17 16 14 11 15 12 13 19 
12 14 15 17 13 19 11 16 20 18 
11 16 14 20 12 19 17 18 13 15 
14 11 15 16 13 17 12 20 18 19 
17 18 14 11 12 20 19 15 13 16 
19 13 17 15 16 18 11 12 20 14 
1 6 9 2 5 4 3 8 7 10 
2 4 5 9 10 8 6 3 7 1 
9 3 4 7 5 10 6 2 8 1 
10 8 7 1 6 4 3 5 9 2 
2 1 7 8 10 4 6 9 3 5 
10 6 2 5 7 4 1 3 9 8 
10 5 9 1 3 4 8 2 7 6 
10 6 1 2 4 9 7 3 8 5 
2 5 10 1 7 9 3 8 6 4 
1 4 9 3 10 5 6 7 2 8 
forbidden 1 11
forbidden 1 13
forbidden 1 14
forbidden 1 16
forbidden 1 17
forbidden 1 18
forbidden 1 20
forbidden 2 16
forbidden 2 20
forbidden 3 11
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forbidden 3 16
forbidden 3 17
forbidden 4 13
forbidden 4 16
forbidden 4 18
forbidden 4 20
forbidden 5 11
forbidden 5 12
forbidden 5 13
forbidden 5 15
forbidden 5 16
forbidden 5 17
forbidden 5 18
forbidden 5 19
forbidden 6 11
forbidden 6 14
forbidden 6 17
forbidden 7 11
forbidden 7 15
forbidden 7 18
forbidden 7 19
forbidden 7 20
forbidden 8 11
forbidden 8 17
forbidden 8 18
forbidden 8 19
forbidden 8 20
forbidden 9 15
forbidden 9 17
forbidden 9 20
forbidden 10 11
forbidden 10 14
forbidden 10 15
forbidden 10 19