Some people consider Sudoku Samurai puzzles too big; some other people prefer even bigger Sudoku variant puzzles.
TOP CHOICE in SUDOKU BOOKS
81 Harakiri Sudoku Puzzles - each with 8 Sudoku grids
GIFT IDEA - This is a great gift for anyone who enjoys solving puzzles - including YOU!
If you belong to the second category, this book is for you! It's full of overlapping 8-grid Sudoku puzzles (Gattai-8)...