I believe we've come to the point where 25-50% of the questions posted are posted by new users and almost always do not follow the rules (duplicate, no winning condition). Whenever you look at the questions page it's filled with closed questions.
Should we add more explicit warnings / notifications to new users that notify them of the rules?
To me it's clear that currently there is not enough information notifying them of the fact that we have these rules before they post. This is not a recurring problem - it nearly always happens once and not again.