Download or read book Before Sudoku written by Seymour S. Block and published by Oxford University Press, USA. This book was released on 2009 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fans of sudoku may not know that the game is a recent offshoot of the venerable Magic Square, which dates back more than 4,000 years to ancient China. This book provides a delightful account of the mind-boggling variety possible with magical squares.