What the heck is ‘sudoku’?

My youngest child just started 7th grade, and her math teacher sometimes assigns a puzzle called sudoku for homework. The first time she asked me to help her with one of these assignments, I thought it was a variation on magic squares. But after looking at the rules for completing a sudoku, I realized that it’s completely different. A sudoku is a pure logic puzzle, whereas a magic square is an arithmetic puzzle. The fact that most sudoku (e.g. in newspapers) use digits 1-9 is merely convenience. Some sudoku puzzles use letters, while others use geometric and/or colored symbols. I found a pretty nice sudoku application on the web, if you want to give it a try.

I’m very interested in the information theory and coding aspects of these puzzles. It strikes me as being somewhat like compressing a file. (Actually, I guess it would be “decompressing”.)

WebSuDoku.com logo

About Jim Vanderveen

I'm a bit of a Renaissance man, with far too many hobbies for my free time! But more important than any hobby is my family. My proudest accomplishment has been raising some great kids! And somehow convincing my wife to put up with me since 1988. ;)
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One Response to What the heck is ‘sudoku’?

  1. mp3-players says:

    Hi, people! I have some interesting facts for you 🙂 Anyone know that sudoku was created by an architect? The modern Sudoku was designed anonymously by Howard Garns, a 74-year-old retired architect and freelance puzzle constructor, and first published in 1979. One more: I heard that my favorite game – the popular puzzle game of Sudoku is brought to the next generation of consoles. Go! Suduko 2 has evolved from the original game to provide a variety of new features and game modes. 🙂

    Thanks, Kevin

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