I must say I was very disappointed that afternoon. I didn’t like the performance of the bands, for one. And I hated being together with such a retarded audience! People there were merely a bunch of "coOl" school kids and university freaks, all in black t-shirts either labeled with deep nonsense statements, or had artworks of famous metal bands that those freaks probably know nothing about.

Many times during the concert did a number of idiots do some insane acts like taking off shirts, creating mosh pits and even jumping off the crowds! It was funny to see them exercise their stupidity this way :)

Clearly those people had nothing to do with music, but were rather “3aysheen il dor”, as one of my friends better described it, giving metal music this insane figure.

Apparently, you are required to think of a sequence of pouring operations, after which the containers will become filled as required.

The guy said that some people, given a deal of time, did solve it so it shouldn’t be much of a problem for me. As he was explaining the puzzle, I was wondering whether it would take anybody more than few seconds before he/she can figure an answer, but it seems this wasn’t quite the case.

I hurried to attend my circuits’ lecture, which has already started by then, took a seat and immediately started working on the puzzle. To my surprise, I spent about fifteen minutes thinking and couldn’t get an answer. I was starting to question the validity of the containers' sizes when suddenly a cool fact came to my attention …

The build of this puzzle can be exploited to get the answer!

During those 15 minutes I was fooling myself for thinking! At no point I really had to “think” about the next step of solution. Try it yourself, the first step is pretty clear: pour water from the biggest container into one of the others. At every subsequent step you find yourself ahead a number of choices, all of which, except for the correct one, are pointless, and do nothing but probably take you few steps back. You don’t need to think because the right step is always so obvious; the other “choices” never make sense, and are only there to mislead you.