The New Sudoku Players' Forum

[JPF]

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

[JPF]

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

[wapati]

For the shape only :

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

JPF

[claudiarabia]

[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

[JPF]

Cool shape, treble hook, anchor, yep, cool pattern!
Really a nice shape.

Thanks.
Encore ?

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.

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

[gurth]

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.

[gurth]

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.

[claudiarabia]

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

[JPF]

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

[ronk]

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.

[claudiarabia]

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?

[JPF]

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

[claudiarabia]

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

[JPF]

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


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.

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

[wapati]

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.