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