I have to say, I have grown to dislike these 'logic puzzles'. I have read 'To mock a mockingbird', and examined several of these puzzles and non of them are act

I have to say, I have grown to dislike these 'logic puzzles'. I have read 'To mock a mockingbird', and examined several of these puzzles and non of them are actually hard (as in: challenging) once you realize: often you just need simple things: double negation and massive case exhaustion (and especially the latter here is just tedious and not interesting). Often, you just need the case exhaustion.