not possible to have that many solutions teejee and still fit the title concentric and be a uniform pattern. You will need to show me the 18432 solutions,
According to me and to many people, the rules of hanjie don't include the respect of the title... Because the interpretation of any title depends on so many criterias that it can't be a guide to a logical solving. By example, not the 18432 solutions I found are concentric but many of them can be considered as concentric : they've got a center and are quite symetrical around this center...
So the only way to respect the rules of hanjie is to make a grid that have only one solution...
So the only way to respect the rules of hanjie is to make a grid that have only one solution...