keenquizzer,
1.
If you happen to know that the poster is asking quiz questions and the setter has asked people not seek help. The standard protocol is to post something (in block capitals) along the lines of.......
you cheating bastard, you know you shouldn't be asking,the setter has explicitly said,etc,etc........... then repeat the message in ever more personal terms until the offending poster dies of shame, or other posters are afraid to give any more answers.
2. You consider the closing date for the quiz sufficiently far in the future that the poster shouldn't be asking,at least not yet. Again,thankfully,there is an established protocol. Post something along the lines of............
For god's sake there's still two years til this quiz closes,why ask yet. (again block capitals cn be used). Follow this up by accusing the poster of being too sodding idle to make an effort themselves, too stupid or being a money grabbing bastard.
Again you should get the satisfaction of seeing the thread grind to an embarrassing halt.
Good luck on your mission.