The calendar is printed by Calverts using green paper stock Cyclus and has been sent to more than 2,000 designers.

Alan Goschalk, Paperback general manager, said, "Our aim with this calendar was to take a different approach to the traditional corporate calendar format of dates and marketing messages.

"The end result provides an entertaining selection of puzzles, as well as showcasing the great print quality and finish that can be achieved with Cyclus, while maintaining high green credentials."

The cover of the calendar is printed on Cyclus Print 350gsm and the text on Cyclus Offset 170gsm.

The grade is produced from 100% post-consumer recycled fibre and is distributed by Paperback, Antalis, James McNaughton and Premier Beswick.