“The difficulty of a jigsaw puzzle, and the time it will take to assemble it, is directly proportional to the number of pieces,” says Alvarez-Ossorio. Beyond the number of pieces, there are ...

This Costco jigsaw puzzle contains 60,000 pieces broken up into 60 sections of 1,000 pieces each that all connect to create one giant puzzle. When finished, the What a Wonderful World puzzle ...