Yeah I use tactics like these as a 'primer' before getting into competition.  Get's the creative juices flowing without straining the brain.  My theme for the first three (I can't tell you before hand!) was how knights and queens can work together in many interesting ways.  I'll probably post a few tomorrow as well (maybe just in 1 blog though!)

Not to hard I got it in less than a minute but it did teach me a new of thinkiing : look at how you threaten mate