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