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