Slideshow: Puzzled Brits Clamor for Su Doku

A logic game produced by a retired judge turns into a national obsession in the United Kingdom -- and the latest battlefront in the newspaper circulation wars. By Monique Cuvelier.
Image may contain Text Number Symbol and Word
Minesweepermated with a crossword, producing the digits one through nine as offspring.

See related story: Puzzled Brits Clamor for Su Doku

Image may contain Text Number and Symbol
The goal is to fill every grid, column and row with numbers one through nine, without repeating numbers.