More puzzles for you. Here's a story from NPR's program Day to Day about the Japanese number game Sudoku, which is sort of like a magic square (magic squares play a critical role in the Steve Martin novel, The Pleasure of My Company; a highly recommended read). Here is the article by commentator Seth Stevenson
I've never played Sudoku before, but it's challenging to type the word. I may give it a try, you know how I am about numbers. If you don't see posts from me for a few days, you'll know why.