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Jim Henderson wrote:
> On Fri, 23 Jan 2009 15:11:33 +0000, Invisible wrote:
>
>> Sudoku. Nobody knows exactly how to pronounce it,
>
> The Japanese do. "Soo Dough Koo" is the way I have heard it pronounced.
> Spoken fairly quickly.
>
> Jim
soo dough koo, or sud oh koo I've heard both.
--
~Mike
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Jim Henderson <nos### [at] nospamcom> wrote:
> The Japanese do. "Soo Dough Koo" is the way I have heard it pronounced.
> Spoken fairly quickly.
No offence, but using English as a guide for pronounciation is a joke. ;)
--
- Warp
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Warp wrote:
> If trial-and-error was acceptable in a sudoku, then you could just as
> well give an empty sudoku grid for someone to solve.
I saw a solver someone had written using backtracking in Python (IIRC). It
solved the empty sudoku problem in under a second. :-)
(Obviously, it wasn't a unique solution.)
> The principle in sudoku puzzles is that they can be solved without having
> to guess anything. The chain of required deductions may go very deep in
> the hardest sudokus, but it's always possible to solve it without having
> to guess.
I think you might need some backtracking in the hardest of problems.
--
Darren New, San Diego CA, USA (PST)
"Ouch ouch ouch!"
"What's wrong? Noodles too hot?"
"No, I have Chopstick Tunnel Syndrome."
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Darren New <dne### [at] sanrrcom> wrote:
> > The principle in sudoku puzzles is that they can be solved without having
> > to guess anything. The chain of required deductions may go very deep in
> > the hardest sudokus, but it's always possible to solve it without having
> > to guess.
> I think you might need some backtracking in the hardest of problems.
Thinking about it, in fact I think the only requirement for a sudoku
puzzle to be rational is that it must have only one possible solution.
As far as I understand, all sudoku puzzles are like that.
The difficulty of the puzzle is determined by how deep your deductions
must be if you want to solve it with certainty (ie. without trial and error).
--
- Warp
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Warp wrote:
>
> No offence, but using English as a guide for pronounciation is a joke. ;)
>
It works for those who speak English. I realize the whole world does not
speak English, but from English speaker to English Speaker it works.
I don't want to get into the IPA debate again, though. I can't
understand IPA. I've read the Wikipedia entry on it, and I still can't
understand it. It's completely non-intuitive to me.
--
~Mike
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Warp wrote:
> Thinking about it, in fact I think the only requirement for a sudoku
> puzzle to be rational is that it must have only one possible solution.
> As far as I understand, all sudoku puzzles are like that.
I think that while it may be a rule that's the case, it isn't the case that
such is mathematically guaranteed. In other words, I expect that it's not
hard to make a sudoku puzzle with multiple solutions, but people don't make
them like that because that takes the fun out of it?
--
Darren New, San Diego CA, USA (PST)
"Ouch ouch ouch!"
"What's wrong? Noodles too hot?"
"No, I have Chopstick Tunnel Syndrome."
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On Fri, 23 Jan 2009 11:50:41 -0800, Darren New wrote:
> Warp wrote:
>> Thinking about it, in fact I think the only requirement for a sudoku
>> puzzle to be rational is that it must have only one possible solution.
>> As far as I understand, all sudoku puzzles are like that.
>
> I think that while it may be a rule that's the case, it isn't the case
> that such is mathematically guaranteed. In other words, I expect that
> it's not hard to make a sudoku puzzle with multiple solutions, but
> people don't make them like that because that takes the fun out of it?
I've done several where there were clearly multiple solutions -
particularly at easier degrees of difficulty.
Jim
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On Fri, 23 Jan 2009 12:56:55 -0600, Mike Raiford wrote:
> Jim Henderson wrote:
>> On Fri, 23 Jan 2009 15:11:33 +0000, Invisible wrote:
>>
>>> Sudoku. Nobody knows exactly how to pronounce it,
>>
>> The Japanese do. "Soo Dough Koo" is the way I have heard it
>> pronounced. Spoken fairly quickly.
>>
>> Jim
>
> soo dough koo, or sud oh koo I've heard both.
I've heard the second, but the first is more in line with Japanese
pronunciation standards - and the word does come from Japanese.
Jim
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On Fri, 23 Jan 2009 14:28:43 -0500, Warp wrote:
> Jim Henderson <nos### [at] nospamcom> wrote:
>> The Japanese do. "Soo Dough Koo" is the way I have heard it
>> pronounced. Spoken fairly quickly.
>
> No offence, but using English as a guide for pronounciation is a joke.
> ;)
No offense taken, but now you get to show us a pronunciation guide. ;-)
Jim
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Jim Henderson <nos### [at] nospamcom> wrote:
> I've done several where there were clearly multiple solutions -
> particularly at easier degrees of difficulty.
Did you actually try to solve it in different ways?
--
- Warp
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