[math-fun] Magic Sudoku

Everyone here is likely familiar with the 3x3 magic square. 276 951 438 Alexandre Owen Muniz and David Eppstein managed to make a Magic Sudoku puzzle where the above nine numbers are the only givens. I present it at mathpuzzle: http://www.mathpuzzle.com/ I listed about 15 other things in my latest update as well, on diverse MathFun topics. If you haven't visited in a while, it's worth a look. Ed Pegg Jr