You will know you are right by checking the answer with all the conditions. This test was given by the German Institute of Logical Thinking in Berlin, 1981. Here is the puzzle and we hope you like it. There are five houses. Each house has its own unique color.
All house owners are of different nationalities.
They all have different pets. They all drink different drinks. They all smoke different cigarettes. The English man lives in the Red House. The Swede has a Dog.