This word is hard to pronounce, but probably not as hard as the puzzle is to complete. Ever since these number games made their way across the world from Japan a few years ago, and became a regular feature in newspapers, we've all found out how good or bad we are at basic math and realized how much we rely on calculators on a daily basis. If there's one thing we know for sure, it's that these will keep you busy enough on any long-haul flight.
Because the word is of Japanese origin, the pronunciation isn't obvious. You look at the way it's spelled and you want to say "Suh-doe-coo", but you're not quite right. "Suh-dock-oo" isn't right either, even though you've probably heard that one before as well. "Soo-doe-coo" is the way to say it, nice and smooth.