Sudoku Collection: 200 Very Hard Sudoku X Puzzles 9x9

By Alena Gurin

The books contains 250 puzzles 9x9 at the level of Very Hard.2 puzzles per page.All riddles have only 1 solution.The font size is correct, you will not have to strain your eyes when solving puzzles.High quality paper and print (all puzzles read well, easy to write with pen and pencil without worry of bleed-through). Perfect for Advanced players.Sudoku X is based on the original Sudoku grid, with the same rules and numbers-1 to 9(no number may appear twice in any row or column and rectangles of 3x3).Sudoku X (Diagonal Sudoku) puzzles add another twist to your favorite game: both diagonals must contain all digits from 1 to 9 precisely once.

• Format: Paperback
• Language: English
• ISBN: 1686315228
• ISBN13: 9781686315220
• Release Date: August 2019
• Publisher: Independently Published
• Length: 122 Pages
• Weight: 0.38 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"