I remember, <CM Ilmago>, that several years ago we were in communication on this subject.
Back in the day, it used to be that a TT problem should have had only one solution move with an evaluation over +1 - each and every move of the solution. Also, when the winning move was no better than +4 or so - the second best move couldn't have been better than +0.3.
Since then - and also quite recently - I remember seeing many many many problems that don't answer up on this.
I generally comment about them - only to have the crowd answer me that I'm a bad sport, that the purpose is to find "the very best move", that it's my fault that I didn't get it (in some of these cases I did get it, of course) - etc.
The question is - what to do. Should I write to you personally every time I ran into a defective problem?
ill let you know.