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Old 10-16-2006, 05:39 AM   #1
Alexander Turcic
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Get a quick Sudoku fix on the iRex iLiad

In a world that has gone sudokuing mad, it doesn't come as a surprise that puzzle enthusiasts turn latest gadgets into platforms for ancient games. Thanks to MobileReader yokos who created 666 Sudoku puzzles of three different difficulties for the iRex iLiad. So, dear iLiad fans, it's time to sharpen your pencils... uhm, styluses!

How to play: Fill in the grid so that every row, every column and every 3x3 box contains the digits 1-9. There's no maths involved. You solve the puzzle with reasoning and logic.
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Old 10-16-2006, 05:43 AM   #2
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Quote:
Originally Posted by Alexander Turcic
There's no maths involved. You solve the puzzle with reasoning and logic.
Which actually is all math
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Old 10-16-2006, 05:46 AM   #3
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One implies the other - but it's not necessarily the way around.
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Old 10-16-2006, 05:53 AM   #4
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Easy explanation: It's not math in non-academic understanding because you are not calculating to solve it.

Last edited by yokos; 10-16-2006 at 05:57 AM.
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Old 10-16-2006, 06:08 AM   #5
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It may be simple maths, but unless you're entering random numbers you'll still be doing some adding up, which still counts
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Old 10-16-2006, 06:38 AM   #6
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Darn, i didnt want to cause so much confusion.

Just a little explanation. reasoning and logic are the basic principles of math. Calculation, is only a logic "framework", so you are basically using math every day

and drrow, what do you mean? math => reason and logic but but not necessarily reason => logic => math ?? that might be true with alot of people.
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Old 10-16-2006, 06:50 AM   #7
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How about this?... No advanced math needed, just simple arithmetic with integers. ;-)
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Old 10-16-2006, 07:06 AM   #8
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I'm not totally certain, but I'm wondering if a similar program exists for generating chess problems as does for the Sudoku puzzles?
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Old 10-16-2006, 07:36 AM   #9
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Quote:
Originally Posted by Bob Russell
How about this?... No advanced math needed, just simple arithmetic with integers. ;-)
On the contrary, it is advanced math what is implied in this kind of highly symmetric objects. Kind of Rubick's cube being about group theory. But you do not need to use it to understand the examples.
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Old 10-16-2006, 07:52 AM   #10
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The origins of Sudoku lie with the mathematician Euler who devised something nasty called Latin Squares.

http://mathworld.wolfram.com/LatinSquare.html
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Old 10-16-2006, 08:05 AM   #11
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Quote:
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I'm not totally certain, but I'm wondering if a similar program exists for generating chess problems as does for the Sudoku puzzles?
hehe, ok, now we are getting into it
Actually, those two games can not be compared.

Usually sudoku games are created to have only one possible solution. You could design them to be more difficult with several solutions. But that would make it hard for the user, because he would come to a point in the game, where he has to "guess" a number for a field. I have yet to come across one of those. Until now i could solve every sudoku by just following plain logic without ever having more than one solution or even come across a dividing path while solving of which one would prove not solveable.

It is for that an "easy" problem and can easily be solved by a computer in milliseconds.

chess on the other hand is a multiplayer game, which offers a totally different level of difficulty. You simply can not calculate all possible moves and choose the best one there is in a reasonalbel amount of time. Thats why computers still loose against human beeings.
There is a whole reasearch field about game theory and multiplayer game theory.

Getting into that, that is high level logic, reasoning and calculation
Math at its best.
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Old 10-16-2006, 08:43 AM   #12
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It's either advanced or simple math depending on what strategy you approach the problem with, either way there is still maths involved
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Old 10-16-2006, 08:55 AM   #13
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Quote:
Originally Posted by pdam
It's either advanced or simple math depending on what strategy you approach the problem with, either way there is still maths involved
I'd be interested to hear more about the math-way of solving Sudoku puzzles. Until now, my way was more less counting and trial & error.
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Old 10-16-2006, 09:18 AM   #14
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Oh, I see, Soduku doesn't even involve adding. I didn't realize that. I see why Alex said "no math!"

But if you do want some math, it's apparently all about combinatorics and permutation group theory. Here's one place to start learning about Soduku math... http://en.wikipedia.org/wiki/Mathematics_of_Sudoku

And this is a cute article: The mathematics of Sudoku, a puzzle that boasts "No math required!".
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Old 10-16-2006, 09:20 AM   #15
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Quote:
Originally Posted by doctorow
I'd be interested to hear more about the math-way of solving Sudoku puzzles. Until now, my way was more less counting and trial & error.
Well, you asked for it...
http://en.wikipedia.org/wiki/Mathematics_of_Sudoku
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