and to answer your question above: I would never, not in a million years, buy a tactics book that gives me the solution immediately.
Do you prefer 2 diagrams, the way New in Chess are doing it, for example in their WC tactics collection, Kasparov, Polgar, etc., or leaving blank spaces between diagram and solution?
'Tactics Time' seems to be just like me, solution immediately following diagram, how do they sell so much then?
Here my first best-selling book, of which I still have not sold a single copy.
very sad to hear...
Time for you to buy one.