Sudokus with an original rare shape

Everything about Sudoku that doesn't fit in one of the other sections

Re: GA05 : Open Hat and Head

Postby JPF » Thu Oct 26, 2006 4:36 pm

gurth wrote:GA05 : Open Hat and Head

Code: Select all
  . . 8 6 . . . 2 .
  . 1 . . 9 . 4 . .
  5 . . . . 7 . . .
  6 . . . . 3 . . .
  . 4 . . . . . . .
  . . 2 5 . . 9 1 .
  . 6 . . . 8 . . 3
  7 . . . . 9 . . 6
  . . . . . . 2 4 .      (SE 8.3)(Pearl 7.4)
Open hat as promised. Note the head will just fit nicely into the hat.

Hi gurth,
nice puzzle, but i wonder how the head can get into the hat !
I think that you need to open it a bit more:)

Here's a new version of my gravel-puzzle.
That's not a pearl, and SE = 7,3 only

Code: Select all
 . . 8 3 . . . 2 .
 . 1 . . 8 . 4 . .
 5 . . . . 7 . . .
 9 . . . . . . . .
 . 4 . . . . . . .
 . . 2 . . . 8 1 .
 . 9 . . . 5 . . 3
 7 . . . . 9 . . 6
 . . . . . . 2 8 .


What about this sombrero ? size = 8,3...
Code: Select all
 . . 7 8 . . . 3 .
 . 2 . . 3 . 6 . .
 9 . . . . 4 . . .
 8 . . . 5 . . . .
 . 1 . 7 . . . . .
 . . 2 . . . 7 5 .
 . 6 . . . 2 . . 8
 2 . . . . 3 . . 6
 . . . . . . 9 4 .

JPF
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Postby JPF » Thu Oct 26, 2006 9:15 pm

For the shape only :

Code: Select all
 . . . 8 3 2 7 . .
 . . 3 6 . . . . .
 . 9 4 7 . . . . .
 2 7 1 9 4 . . . .
 9 . . 2 7 . . . .
 5 . . . . 8 . . .
 3 . . . . . 2 . .
 . . . . . . . 4 .
 . . . . . . . . 1

JPF
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Postby wapati » Fri Oct 27, 2006 1:22 am

JPF wrote:For the shape only :

Cool shape, treble hook, anchor, yep, cool pattern!

JPF
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Anchor woman

Postby claudiarabia » Fri Oct 27, 2006 12:48 pm

[quote="JPF"]For the shape only :

Code: Select all
. . . . 3 2 7 . .
. 5 . 6 . . . 1 .
. . 4 7 . . . . 8
. 2 7 9 4 . . . .
9 . . 2 1 . . . .
3 . . . . 8 . . .
2 . . . . . 3 . .
. 6 . . . . . 4 .
. . 8 . . . . . 1

Really a nice shape. I boosted it to SE 8.3 and there is an WXYZ-Wing inside.

Code: Select all
. . . . 3 2 6 . .
. 9 . 6 . . . 5 .
. . 4 7 . . . . 3
. 1 2 . 4 . . . .
6 . . 9 5 . . . .
9 . . . . 8 . . .
7 . . . . . 2 . .
. 3 . . . . . 4 .
. . 5 . . . . . 1

This one is SE 7.2 and has a bug type 1 and more interesting techniques.

Enjoy

Claudia
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Re: Anchor woman

Postby JPF » Fri Oct 27, 2006 7:15 pm

wapati & claudiarabia wrote:Cool shape, treble hook, anchor, yep, cool pattern!
Really a nice shape.
Thanks.
Encore:) ?

claudia wrote:
Code: Select all
. . . . 3 2 7 . .
. 5 . 6 . . . 1 .
. . 4 7 . . . . 8
. 2 7 9 4 . . . .
9 . . 2 1 . . . .
3 . . . . 8 . . .
2 . . . . . 3 . .
. 6 . . . . . 4 .
. . 8 . . . . . 1

Really a nice shape. I boosted it to SE 8.3 and there is an WXYZ-Wing inside.

Not exactly the same shape but,
your's is :
a nice anchor.
a real puzzle.

Minimal, 24 clues.
7 mutable cells : (E1=5;F1=1|5;D4=3;A5=8;A7=5;H8=2|9;C9=9)
and 7,2 ≤ ER ≤ 8,5.
With C9=9 you can upgrade the ER to 8,5.


claudia wrote:

Code: Select all
. . . . 3 2 6 . .
. 9 . 6 . . . 5 .
. . 4 7 . . . . 3
. 1 2 . 4 . . . .
6 . . 9 5 . . . .
9 . . . . 8 . . .
7 . . . . . 2 . .
. 3 . . . . . 4 .
. . 5 . . . . . 1

This one is SE 7.2 and has a bug type 1 and more interesting techniques.

This one has 2 mutable cells (G1=8;I9=9).
With G1=8 => ER goes up to 7,3.
But is the mutant puzzle more interesting to solve ?

JPF
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Hats etc

Postby gurth » Sat Oct 28, 2006 7:08 am

re: Hats etc

JPF, reviewing our haberdashery, on 5 Oct you showed open hats with head furthest away, and also not so far away.

On its journey into the hat, the head still has another 3 stages to go, or the hat could help by descending a step.

Your hats are improving in SE quality. Interesting that your latest closed sombrero, with 2 more clues, is tougher than the open one.

You are right: I shouldn't have called my GA05 OH (open-hat) but rather HO (half-open). For my OH see GA25Emerald on my thread Gurth's Puzzles.

Your % puzzle is exquisite. You should give it a name I think. Your Anchor is also exquisite.
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GA27Emerald

Postby gurth » Sat Oct 28, 2006 7:12 am

GA27Emerald

Code: Select all
  . . . 1 . . . . 9
  . . 2 . 6 . . . .
  . 3 . . . 7 . . .
  4 . . 9 . . 1 . .
  5 . . . . . 6 . .
  8 . . 7 . . 4 . .
  . 1 . . . 8 . . .
  . . 4 . 7 . . . .
  . . . 4 . . . . 7   


Claudia, I don't know whether you permit such things in your thread.
It's not a sudoku, since I redefined Emeralds as sudoku variants: i.e. sudokus with symmetrical solutions. That is a subset of sudokus.

But I offer it for its shape.

As an Emerald, it is really too easy, but might serve for Emerald beginners.
gurth
 
Posts: 358
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Location: Cape Town, South Africa

Re: GA27Emerald

Postby claudiarabia » Sat Oct 28, 2006 9:47 am

gurth wrote:GA27Emerald

Code: Select all
  . . . 1 . . . . 9
  . . 2 . 6 . . . .
  . 3 . . . 7 . . .
  4 . . 9 . . 1 . .
  5 . . . . . 6 . .
  8 . . 7 . . 4 . .
  . 1 . . . 8 . . .
  . . 4 . 7 . . . .
  . . . 4 . . . . 7   


Claudia, I don't know whether you permit such things in your thread.
It's not a sudoku, since I redefined Emeralds as sudoku variants: i.e. sudokus with symmetrical solutions. That is a subset of sudokus.

But I offer it for its shape.

As an Emerald, it is really too easy, but might serve for Emerald beginners.


Hi Gurth,

I'm not an admin so it is not on me to remove this from my thread. I would be happy if you would make a valid sudoku out of it. I know that you have this precious-stone-sudoku-philosophy. You in South Africa seem to have a very special relation to precious stones.

It would be great if you would make a special precious-stone-thread, where you can explain this philosophy in a concise form. Even I would understand it then. It is something very special and currently your precious stones are quite scattered through the forum. As far as I have seen in your thread there are only emeralds, but I have seen, you have pearls and sapphires too. Collecting them, the gurth-thread would get a more distinguished character then and won't be based upon a name only.

It will become the Fort Knox of www.sudoku.com. Maybe Mr. Juillerat will make a Sudoku-Explainer for Emeralds and the others then.

With best wishes

Claudia
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Re: GA27Emerald

Postby JPF » Sat Oct 28, 2006 11:25 am

claudiarabia wrote:GA27Emerald

Hi Gurth,

I would be happy if you would make a valid sudoku out of it.


Here's a real Octopus (8 is missing)
Code: Select all
 . . . 1 . . . . 6
 . . 2 . 3 . . . .
 . 4 . . . 5 . . .
 6 . . 7 . . 1 . .
 1 . . . . . 2 . .
 7 . . 2 . . 3 . .
 . 6 . . . 2 . . .
 . . 3 . 4 . . . .
 . . . 9 . . . . 4

18 low-stepper : no need to keep it in Fort Knox and to ask N. Juillerat for a special rating:)

JPF
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Re: GA27Emerald

Postby ronk » Sat Oct 28, 2006 11:57 am

gurth wrote:I don't know whether you permit such things in your thread.
It's not a sudoku, since I redefined Emeralds as sudoku variants: i.e. sudokus with symmetrical solutions. That is a subset of sudokus.

gurth, I really like your Emerald variant, so please don't take this wrong.

A single Emerald thread on this General/puzzle forum would have (arguably) been OK, but now you've begun to scatter them about. Therefore, I think it's time to move this variant to the Sudoku Variants forum.

See you there.:)
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Re: GA27Emerald

Postby claudiarabia » Sat Oct 28, 2006 12:51 pm

gurth wrote:GA27Emerald
But I offer it for its shape.


Hi Gurth,
Code: Select all
. . . 1 . . . 7 .
. . 2 . 3 . . . 6
. 8 . . . 5 . . .
3 . . 2 . . 6 . .
5 . 9 . . . 4 . 3
1 . . 8 . . 9 . .
. 4 . . . 6 . . .
. . 7 . 9 . . . 1
. . . 5 . . . 6 .


... and with Gurth's numbers exc. r5c7
Code: Select all
. . . 1 . . . . 9
. . 2 . 6 . . 5 .
. 3 . . . 7 . . 6
4 . . 9 . . 1 . .
5 . . . 2 . . . .
8 . . 7 . . 4 . .
. 1 . . . 8 . . 2
. . 4 . 7 . . 6 .
. . . 4 . . . . 7


Is this according to the Gurth-shape-spirit?
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Posts: 288
Joined: 14 May 2006

Postby JPF » Sun Oct 29, 2006 12:41 am

claudiarabia wrote:Let me make a humble contribution to the theme "non-minimal full-symmetry with special regard of the Arabian-Star-pattern" ;-) SE-rating 2.0
Code: Select all
 *-----------------*
 |9 . . . . . . . 3|
 |. . . . 6 . . . .|
 |. . 2 7 . 5 4 . .|
 |. . 7 . . . 1 . .|
 |. 9 . . 2 . . 8 .|
 |. . 5 . . . 6 . .|
 |. . 6 4 . 7 5 . .|
 |. . . . 8 . . . .|
 |3 . . . . . . . 2|
 *-----------------*

Claudia

Here's a minimal and ER = 7,1 :

Code: Select all
 3 . . . . . . . 7
 . . . . 9 . . . .
 . . 1 4 . 7 2 . .
 . . 7 . . . 5 . .
 . 4 . . 8 . . 9 .
 . . 2 . . . 6 . .
 . . 4 2 . 6 3 . .
 . . . . 3 . . . .
 1 . . . . . . . 5


JPF
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full-symmetric Arabian Star

Postby claudiarabia » Sun Oct 29, 2006 11:52 am

JPF wrote:Here's a minimal and ER = 7,1 :

Code: Select all
 3 . . . . . . . 7
 . . . . 9 . . . .
 . . 1 4 . 7 2 . .
 . . 7 . . . 5 . .
 . 4 . . 8 . . 9 .
 . . 2 . . . 6 . .
 . . 4 2 . 6 3 . .
 . . . . 3 . . . .
 1 . . . . . . . 5

JPF


Wonderful!

And you kept the Jelly too!

I was also working on a puzzle with no clue in r5c5 but until now I got only one with 6 solutions. But where you make 6 solutions you can also delete them, I'm sure. Or are there shapes where you are always left with 2 or say until 8 solutions?

Claudia
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Re: full-symmetric Arabian Star

Postby JPF » Mon Oct 30, 2006 12:02 am

claudiarabia wrote:I was also working on a puzzle with no clue in r5c5 but until now I got only one with 6 solutions.

Here’s a puzzle from ab with no clue in r5c5 very easy to solve (ER = 2,6)
Code: Select all
 9 . . . . . . . 5
 . . . . 3 . . . .
 . . 1 7 . 2 3 . .
 . . 3 . . . 2 . .
 . 6 . . . . . 9 .
 . . 4 . . . 7 . .
 . . 7 8 . 4 1 . .
 . . . . 5 . . . .
 2 . . . . . . . 3

claudiarabia wrote:But where you make 6 solutions you can also delete them, I'm sure.

If you remove r5c5 from my puzzle, you will get a puzzle with 393 solutions.
many clues will have to be changed until getting a new valid puzzle.

claudiarabia wrote:Or are there shapes where you are always left with 2 or say until 8 solutions?

Of course, there are shapes without any valid puzzles.
For example : 2 empty rows in a band, 2 empty columns in a stack, 5 empty boxes, patterns with less than 17 clues (conjecture), etc...

JPF
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Re: GA27Emerald

Postby wapati » Mon Oct 30, 2006 3:07 am

ronk wrote:
gurth wrote:I don't know whether you permit such things in your thread.
It's not a sudoku, since I redefined Emeralds as sudoku variants: i.e. sudokus with symmetrical solutions. That is a subset of sudokus.

gurth, I really like your Emerald variant, so please don't take this wrong.

A single Emerald thread on this General/puzzle forum would have (arguably) been OK, but now you've begun to scatter them about. Therefore, I think it's time to move this variant to the Sudoku Variants forum.

See you there.:)


Ronk, you are a busybody who should mind his own business.

If you are a moderator, learn moderation. You stiffle the air we speak.

My opinion, respects to Claudia, whose thread this is.
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