Reddit reviews Will Shortz Presents Ferocious Sudoku

OK, so I have a friend in jail serving a lot more time and the rules are probably even stricter (separate receipt needs to be sent in a different shipment or else even new books from Amazon will be destroyed).

Anyways, he says that prison libraries skew towards religious books, former crappy bestsellers (dime-a-dozen bestsellers, the crappy sort of chicklit, etc), and classics. Books that deviate from that are better.

Some general rules: books that cost less are better (at a certain point, you can receive 3x $10 books or 1x $30 book), 3-books-in-1 are better (you can have x many objects).

Books that have gone over well:

• Mistborn trilogy by Brandon Sanderson (fantasy)
  
• The Best Science and Nature Writing anthology, any year (non-fiction)
  
• A Game of Thrones (fantasy)
  
• and various Sudoku books (puzzle)
  
  Mass appeal/tradeability is a big thing: Harry Potter, His Dark Materials, and Percy Jackson are popular.
  
  Books with lots of nature photography are also big.

Clarence has many prophets. Read, go forth, and Sudoke.