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