Wow you are a workhorse!!! Thanks a lot for this. As a beginner, I don't trust myself to know the right answer, so maybe I'll figure out a way to make some kind of 'flipbook' in which you click on the screen and get the right answer.... :)

Best,
Eric
 

The 303 tricky tactics was the first tactics book I've read cover to cover. I did three circles with it too, before I go bored with it.