Interested in a puzzle book of classic form? Try Daedalian Depths by Rami Hansenne. A tribute and homage to Christopher Manson's archetypical, unsolvable Maze. But this one is solvable!
(I will avoid puzzle spoilers in this post, but I will repeat some information that the book explains directly in the prologue. I am also going to talk about the puzzle design in very general terms.)