Overall, this Sudoku book The Everything Giant Sudoku Book: Over 300 Puzzles with Instructions for Solving (Everything: Sports and Hobbies) is a bit of “a dollar short and a day late”. A year ago, it might have warranted a 4 Star, but barely. To give it credit, it does show that the Sudoku puzzle was not invented by the Japanese but by Howard Garnes, a retired architect and introduced at an American Puzzle convention in 1974 and later in Dell’s Mental Puzzles and Word Games as “Number Place” in 1979. It was taken to Japan in 1980, became popular and brought back by Wayne Gould. The book comes up short in solving methods and hints; which are very minimal. The puzzle size is good at about 4 X 4 inches. The paper quality is good the cover is soft with a glued binding. There are 3 levels of difficulty in the 300 puzzles. The price would have been fair a year ago but in comparison to the many other Sudoku books available, it is now too pricey. A brief look around will result in finding many books at greatly reduced prices. The old laws of Supply and Demand are flexing their muscles. You can purchase this book at Amazon.