On Oct 7, 7:26 am, help bot wrote:

Generally, they like to show the ones which have been
"cooked", meaning that somebody demonstrated that it
was flawed in some way. Why the obsession with
"cooks" is beyond me, for much of the analysis in CL,
for instance, can easily be "cooked".


That is because a chess problem should be exact : there should be one
key, unless more than one is intended and the analysis should be
flawless. A mate in six should not be a mate in five or seven. Duals,
such as multiple ending mates, tend to be intolerable. And that is one
of the points of a chess problem: it isn't a vague "and wins" but a
sure win or a mate or stalemate in x moves.