Initialization will set each queen to point to a neighbor, and set column value. C++ version is shown:
main() {
Queen * lastQueen = 0;
for (int i = 1; i <= 8; i++)
lastQueen = new Queen(i, lastQueen);
if (lastQueen->first())
lastQueen->print();
}
Queen::Queen (int col, Queen * ngh)
{
column = col;
neighbor = ngh;
row = 1;
}