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Many people have a magazine, a crossword puzzle, a newspaper, or a book on hand to fill idle time. I, however, prefer to tease my mind with a book of Sudoku puzzles (pronounced sue‐dah‐coup), trying to figure out what number goes where while resisting the temptation to peek in the back at the answer to make sure I am on the right track. For those of you who are unaware of what Sudoku is, it is a highly popular number game whose notoriety may even surpass the crossword or word search puzzles. It can be found in popular newspapers such as USA Today, the New York Times, and the LA Times. Even the Lincoln Journal Star and the University of Nebraska’s Daily Nebraskan make a daily puzzle available to their readers.