Hard Sudoku XV Puzzle Book for Adults: 250 Hard Sudoku For Advanced Players (Paperback) (ISBN-13: 9798696871851)

250 excellent puzzle 9x9 at the level of Hard.For Advanced Players.All riddles have only 1 solution.The font size is correct, you will not have to strain your eyes when solving puzzles.2 puzzles per page. Sudoku XV is based on the original Sudoku grid, with the same rules and numbers-1 to 9.If the border between neighboring cells is marked with the Roman numeral X, the sum of the values in these two cells is 10, if the Roman numeral V - the sum is 5. If the border between two cells is not marked, the sum of the values in these cells cannot be 5 or 10.

Author: Alena Gurin
ISBN-10: 8696871855
ISBN-13: 9798696871851
Publisher: Independently Published
Language: English
Published: 10/12/2020
Pages: 152
Format: Paperback
Weight: 0.47lbs
Size: 9.00h x 6.00w x 0.33d