A few days ago, Rurality posted a blog about Su Doku, a puzzle-logic game that is published in the [London] Times. For those like me, who do not relate well to crossword puzzles but wish to keep your brains sharp, here's the drill.
To help describe the drill, I have borrowed their easy-rated May 16 puzzle. If they throw a hairy conniption over this, I will take it down. But I though that I needed an example to best explain the game.
You begin with a 9x9 grid with some of the squares pre-filled with digits 1 through 9. The object of the game is to have each row, each column, and each little square contain each digit exactly once. Below, I have finished the first row, column, and square with red digits, so you can see how it works.
The Times publishes an easy puzzle each Monday, and they become more progressively difficult until they publish their fiendish version on Friday. I don't plan to get too caught up in this phenomenon and could probably never hope to conquer the fiendish version, but the easy version is, in fact, fairly easy but exercises my deteriorating mind nonetheless.