Yes, you read the title correctly. I am addicted to the number puzzle Sudoku. Let me say right away that I am not a serious addict. I’ve never downloaded a game, and I have never bought a Sudoku book. However, when I find a New York Post in the garbage, I turn immediately to the index, rush to the right page, and spend the next 20 minutes on a “Very Easy” square. (In case you didn’t know, the Post uses this explicit ranking system.) Then I work for a half hour on the “Difficult” square, and after finding the Six Obvious Numbers, give up in mild humiliation. For Details