200 Strong Calcudoku and 200 Jigsaw Sudoku. Hard and very hard levels.: 9x9 Calcudoku complicated version professional - veteran levels + 9x9 Jigsaw ... and Jigsaw Even - Odd classic sudoku): Holmes, Basford: 9781792645389: Amazon.com: Books
Large adult puzzles. Big Hitori and Kakuro sudoku. Medium levels.: Sudoku for home and tourism. (Sudoku and large size puzzles): Holmes, Basford: 9781080781188: Amazon.com: Books
Killer sudoku puzzles and Sukrokuro. All levels.: Easy, medium, hard, extreme levels. (Killer sudoku and his friends): Holmes, Basford: 9781079537079: Amazon.com: Books
Sudoku: Its Power Unleashed: Klein, David: 9781974213177: Amazon.com: Books
Very large font. Big Kakuro and Killer Sudoku easy levels.: Book for adults and children. (Sudoku and large size puzzles): Holmes, Basford: 9781078172707: Amazon.com: Books
Sudoku rund - Circle Sudoku (German Edition): Rest, Lea: 9783940531490: Amazon.com: Books