Great. You just need to solve a series of riddles we've prepared for you...
To participate in our game you will need a smartphone with Internet access and GPS, information-finding skills, some knowledge of Cracow and quite a lot of shrewdness.
Are you ready?
Solve our riddles and type your answers in the web address using the following template: www.zustdoust.com/en/youranswershere
Don't use diacritics or spaces.
You think you can do it? Let's find out.
What's in the picture?