Since the emergence of the internet it is almost impossible to create a quiz which is difficult.
The link below takes you to a horse racing quiz which is challenging and, for most rounds of the quiz, the internet is of very little help. http://www.greyhoundderby.com/Quiz%2010.html
Furthermore, the site owner is donating a complete set of his recently published ‘Racecourses Here Today and Gone Tomorrow’ in 4 volumes.
No worries. I have a Mac tough got PP on it. When I tried to open it, a warning came up that the file was trying access some directory or other. Then it froze