Sudoku Big Book Numbricks - 500 Hard Puzzles 9x9 (Volume 11)

Numbricks is a type of logic puzzle.
It is played on a rectangular grid of squares.
Some of the cells have numbers in them.
The object is to fill in the missing numbers, in sequential order, going horizontally and vertically only.
Diagonal paths are not allowed. Numbricks puzzles are similar to Hidato. The most important difference that it is only possible to move 1 node left, right, up, or down. The puzzle books series contain:
- 500 Hard Puzzles
- Handy 6 x 9 inch Book Layout
- 6 Puzzles per Page
- Ideal for Experts The book is for those who like logic and math problems. Decide, developing and improving.