Acknowledged authors
Shortz,
Will
wrote Will Shortz Presents Snow Day Sudoku: 200 Challenging Puzzles
comprising 320 pages back in 2016.
Textbook and eTextbook are published under ISBN 1250106338 and 9781250106339.
Since then Will Shortz Presents Snow Day Sudoku: 200 Challenging Puzzles textbook
was available to sell back to BooksRun online for the top buyback price
of $ 2.74 or rent at the marketplace.