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