You can be sitting in the train working on a puzzle but it can take you far away from the everyday. Before you know it you're at your stop or about to pass it. It's not like you were even in the train. It's something different, something removed from the ordinary." --Maki Kaji, <I>Japanese Times</i><P>The Nation's No. 1 Newspaper offers puzzlesmiths the ultimate cranium compendium boasting five challenging mind teasers.<P>USA TODAY is America's most recognized newspaper reaching more than 5 million people each day. Now, USA TODAY has collected five popular game formats into one book, including: Logic Puzzles, Crossword, Killer Sudoku, and Hitori.<P>Complete with 400 puzzles (that's twice the size of comparable game books), USA TODAY Jumbo Puzzle Book includes an introductory chapter that offers solution tips as well as a concluding chapter that reveals all the answers.<P>Pen and pencil puzzles are big business. According to a national poll by the American Society on Aging, 84 percent of people report that they spend time daily in activities that are good for brain health.