Albcell.d is the ultimate puzzle book in art form. Thanks to its superb visual effect, every page of the journey tells a new story and each arithmetic challenge induces a state of suspension and wonder! Moreover, the difficulty of these seventy-two numbered artworks encompasses all levels, and as always, there is only one unique solution per puzzle. Albcell.d Opus 1 Series is composed by 24 books. The present work is number eleven.