p cnf 11 27

c Posicao 12
-1 -2 0
-1 -3 0
-2 -3 0
1 2 3 0

c Posicao 13
-4 -5 0
-4 -6 0
-5 -6 0
4 5 6 0

c Posicao 22
-7 -8 0
-7 -9 0
-8 -9 0
7 8 9 0

c Posicao 31
-10 -11 0
10 11 0

c Linha 1
-1 -5 0
-2 -6 0
1 2 5 6 0

c Coluna 2
-1 -7 0
-2 -8 0
-3 -9 0
1 2 3 9 8 9 0

c Diagonal 31 22 13
-10 -8 0
-10 -6 0
-11 -9 0
-7 -5 0
-8 -6 0
5 6 7 8 9 10 11 0

c Quadrado
-11 -3 0
11 3 0