I am slowly getting tired of these never-ending discussions of principle on whether the asking & answering of questions on quiz problems should be taboo on both these forums or not. I suggest for the future that the setter make absolutely clear from the beginning whether he/she wishes silence (possibly until just before closing date) or not. After all, one could argue that the discussion contributes to their popularity & thus to the total sum of proceeds. So far the vast majority of answers have definitely NOT been given, only additionalclues to the most difficult(and even there without any certainty).That is the legitimate function of "Help Forums".And once again: no-one is obliged to look in at all!Any more arguments left?