difficult problem

„It is only after downright stress that we really can enjoy peace and quiet.“
You want to face up to a difficult problem? You must really be very bored! Surely you know cares from hearsay only. Until you have solved this problem, "diversion" is guaranteed!

I did not want it otherwise and herewith, I order difficult problems.


» Are your friends badly in need of problems?




Have you no zest for life any more and are looking for a challenge?

nearly unsolvable problem