Expanding Books

year of pub­li­ca­ti­onISBNauthor(s)title
2007978-0-9721764-1-5Cheryl L Kirk · Noriko SenshuMidnight Sun Sudoku
2006978-0-9721764-2-2Cheryl L. KirkBig Book of 620 Sudoku Puzzles for the Frustrated Fanatic
2007978-0-9721764-7-7Cheryl L Kirk · Noriko SenshuKiller Sudoku!
  ''978-0-9721764-9-1Kathy Sarns · Cheryl L. KirkBearly Solvable Sudokus