tarek wrote:
Well, if you consider that x-subsets (hidden or naked) are easier than (x+n)-subsets then your naked quint will be equivalent to a hidden double.
Seeing that the Naked Quintuplet has a complementary Hidden Pair {48}, was left as an exercise to the reader. Looking at the image I posted, the Hidden Pair actually jumps out grabs you.
Personally I find it much easier finding Naked Subsets, even large ones, than Hidden Subsets. And since every Hidden Subset must have one ore more complementary Naked Subset(s) .....
tarek wrote:
The red herring is a hidden triple in g1 which is not needed
Ooops, had forgotten what the English idiom "Red Herring" means and momentarily thought that it was a "new" Sudoku term that I did not know.
In addition to the red herring Hidden Triplet, there are also 1 Naked Triplet and 2 Naked Quads red herrings.
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