WORLD JIGSAW CHAMPIONSHIPS: Some 3,500 of the best puzzlers from across the globe competed for the top prizes at the World Jigsaw Championships in Spain recently. Competitors had to complete two, new 1,000-piece puzzles in under three hours for the team competition, while competitors in the pairs final had to complete a 1,000-piece puzzle in under two hours. Kristin Thuv, 30, of Norway, took the number one individual title, taking just over 37 minutes to complete a 500-piece puzzle of tigers and