Can I suggest that a category in this Forum be set up for those of us that may wish to post up a solution for confirmation that it is indeed a solution to a puzzle from the book, without spoiling the specific puzzle for others. ie the solution is not displayed but the confirmation or otherwise is given to eg. Puzzle #15. , in yes/no form.
Hope this make sense.
I have completed puzzles and on occasion had doubts that my solution is true and valid. eg #15