International Puzzle Day is celebrated on January 29. Although there are contending opinions as to who established the first Puzzle Day and when, it was most likely created in 1995 by game companies in the United States. The first jigsaw puzzle was created around 1760, when John Spilsbury, a British engraver and mapmaker, mounted a map on a sheet of wood and then sawed around each individual country. Spilsbury used the product to aid in teaching geography. By the early 20th century, magazines and newspapers found that they could increase their daily subscriptions by publishing puzzle contests. The world’s first crossword was published on December 21, 1913 in the New York World’s Sunday newspaper. The puzzle was created by journalist Arthur Wayne. Puzzles may also include letters, numbers, shapes, and riddles.