Albcell.1 (Paperback) (ISBN-13: 9798985784800)

Albcell is a unique two-dimensional puzzle that inclines the mind to switch back and forth between "separate realities" until the very end. This exceptional quality, which will reward your effort by fighting mental entropy, strengthening concentration, and improving multitasking skills, is what sets Albcell apart by comparison with other logic-based, combinatorial number-placement puzzles previously published.

Albcell in a nutshell: Fill the odd numbers (1,3,5,7,9) in diamond squares and even numbers (0,2,4,6,8) in circles, once for each horizontal and vertical row. Simple, isn't it?