Numbricks Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 1) - Paperback

by Dart Veider (Author), Dmytro Khomiak (Author)

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.