This website will never take off unless these problems are fixed. Lukyon-kun is killing their own website with these fundamnetal problems. No website is worth having to solve a riddle every time you want to post.
And the banning makes no sense. If someone can't answer, then just don't let them answer, why ban them? 

Also, the problems are pretty bad. It consists questions involving graph theory, current electricity, etc., which many deserving people may not know about. The questions ought to be basic general high school level math questions. Combinatorics, theory of equations, univariate calculus, geometry, number theory, etc. AOPS, and third world entrance exams like ISI, CMI, are good source. I could supply some questions if Lukyon-kun desires.

Please Lukyon-kun, fix this.