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 8x8 no-op with negative numbers 
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Posted on: Sun Apr 26, 2015 12:20 pm




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Post 8x8 no-op with negative numbers
Accidentally [scared] created this one:

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Posted on: Sun Apr 26, 2015 6:56 pm




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Post Re: 8x8 no-op with negative numbers
-4 to 4, I presume?


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Posted on: Sun Apr 26, 2015 7:46 pm




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Post Re: 8x8 no-op with negative numbers
pharosian wrote:
-4 to 4, I presume?

-4 to 4, now let me think... [glare]


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Posted on: Wed Apr 29, 2015 3:26 am




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Post Re: 8x8 no-op with negative numbers
I sense sarcasm there. [razz]

But really, now that I think a bit more on it, a -4 to 4 puzzle would by 9x9, so what IS the range for this one? Or is figuring that out part of the puzzle?


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Posted on: Wed Apr 29, 2015 8:43 am




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Post Re: 8x8 no-op with negative numbers
pharosian wrote:
But really, now that I think a bit more on it, a -4 to 4 puzzle would by 9x9, so what IS the range for this one? Or is figuring that out part of the puzzle?

I'm actually not 100% sure you can figure out the range from the puzzle,
but my guess is it should be possible.

Edit: looking at the puzzle, it's quite easy, there's a "-9" and a given "4".

The 4 tells you the smallest possible negative number is -3, etc.


Last edited by pnm on Wed Apr 29, 2015 8:46 am, edited 1 time in total.



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Posted on: Wed Apr 29, 2015 11:48 am




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Post Re: 8x8 no-op with negative numbers
I found a solution. Not sure if it is the only one.


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Posted on: Wed Apr 29, 2015 7:22 pm




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Post Re: 8x8 no-op with negative numbers
Still not sure about the range of numbers used........is it obvious.........like -3 to +4?


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Posted on: Thu Apr 30, 2015 10:43 am




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Post Re: 8x8 no-op with negative numbers
Yes, Beaker, that is the range I found too.


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Posted on: Thu Apr 30, 2015 11:35 pm




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Post Re: 8x8 no-op with negative numbers
nicow wrote:
Yes, Beaker, that is the range I found too.


The solution I found is unique with respect to numbers I have considered but not unique with respect to operators, as usual in no-ops, in fact the cage "0" c1-c2-d1 admits up to 3 different operators (+, x, :). However I did not try "many" different sets of numbers, continuous of course, since I believe that actually the software is not able to generate puzzles with skipped numbers :-).


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Posted on: Fri May 01, 2015 8:43 am




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Post Re: 8x8 no-op with negative numbers
clm wrote:
However I did not try "many" different sets of numbers, continuous of course, since I believe that actually the software is not able to generate puzzles with skipped numbers :-).

That is correct.

It is the next step for the software, puzzle with arbitrary sets of numbers [scared]


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