I really enjoy tsumego. It's very gratifying to find the solution. Sometimes they are simples moves with just a move or two. Sometimes it is really difficult to find the move, or when you think that you've found it you're mistaken. And when you find the right sequence you're happy, working hard and seeing the answer as a white flash into your eyes.
It's very amazing the way our mind works. We can't control it, and without really reasoning anything it shows the right way to work out the problem. Go is amazing :).
Black to move and kill.
