[sobre o puzzle numérico que o Público disponibiliza na última página] My Days Are Numbered - I'm addicted to a Japanese logic puzzle. You will be, too. [...]
There's an ongoing sudoku war in Great Britain right now, with several newspapers competing to be the hot sudoku spot. Sudoku books are flying off the shelves. And it's all about to hit these shores. The New York Post has started printing sudokus. According to the Economist, the New York Times is pondering a sudoku offering. Right next to the Sunday crossword, no less. It's a sudoku epidemic!
Sudoku is not new. This sort of puzzle has been around forever, all over the world. (The really nice thing about number puzzles is that they work in any language.) Sudoku is often called "Number Place" in the United States, and it's popped up in puzzle magazines here for years. So, why is it suddenly so popular?