Here's a puzzle that I have spent several years researching ... the Shakespeare authorship question. Many people see this as a non-issue, but I can assure you that there are several detailed arguments that have been missed by academics showing that Mr Shakspere of Stratford could not have written The Tempest, The Comedy of Errors, and Love's Labour's Lost. For me, a more probable author is the Renaissance philosopher and Lord Chancellor, Sir Francis Bacon (1561-1626), who to Ben Jonson was "by his work , one of the greatest men ... that had been in many ages".
If you'd like to check the arguments for yourself you can download a complementary copy here:
I write mathematics, logic, and lateral thinking puzzles for The Daily Telegraph (UK). My books include Brain Busters (Dover: 2003) and Challenging Logic Puzzles - Mensa (Sterling: 2003). I have also acted as consultant for BBC TV Mindgames. There are several projects I am working on: a new puzzle book is being prepared, I am organising an exhibition of my visual lateral puzzles in London, and the Shakespeare authorship problem http://barryispuzzled.com/shakpuzz.pdf for free e-book. For puzzle solutions email firstname.lastname@example.org