Sudokus with an original rare shape

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

Re: Heart

Postby claudiarabia » Tue Aug 14, 2007 9:06 am

Mauricio wrote:Some kind of heart
Code: Select all
 . . . . . . . . .
 . . . 1 . 2 . . .
 . . 1 . 3 . 4 . .
 . . 4 . . . 1 . .
 . . 5 . . . 3 . .
 . 2 . 6 . 7 . 8 .
 . . . . 5 . . . .
 . 7 . . . . . 6 .
 . 8 . . . . . 2 .


Couldn't resist in solving this beautiful heart:
Code: Select all
  *-----------*
 |6..|...|2..|
 |...|1.2|6..|
 |2.1|836|4.7|
 |---+---+---|
 |..4|...|1..|
 |..5|...|3..|
 |.2.|6.7|.8.|
 |---+---+---|
 |..6|258|7..|
 |.72|...|86.|
 |.8.|76.|.2.|
 *-----------*

 
 *--------------------------------------------------------------------*
 | 6      349    78     | 459    479    459    | 2      139    1389   |
 | 349    3459   78     | 1      479    2      | 6      359    389    |
 | 2      59     1      | 8      3      6      | 4      59     7      |
 |----------------------+----------------------+----------------------|
 | 78     69     4      | 35     28     35     | 1      79     26     |
 | 78     169    5      | 49     28     149    | 3      479    26     |
 | 139    2      39     | 6      149    7      | 59     8      459    |
 |----------------------+----------------------+----------------------|
 | 1349   1349   6      | 2      5      8      | 7      1349   1349   |
 | 13459  7      2      | 349    149    1349   | 8      6      13459  |
 | 13459  8      39     | 7      6      1349   | 59     2      13459  |
 *--------------------------------------------------------------------*

From this early point I laid a forcing chain eliminating the 4 in r6c9 -> r45c8=79 -> r3c8=5 -> r2c8=3 -> r1c2=3 and r3c2=9 -> r4c2=6 -> r5c2=1 -> r7c2=4 -> r7c98 = -4 -> r89c9=4 <> r6c9=4

With finding this contradiction in column 9, the puzzle can be solved easily by singles and one pair.

Claudia
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Three Kings - a successful illusion?

Postby claudiarabia » Fri Aug 17, 2007 9:36 pm

In this puzzle I wanted to create the illusion of a threefoldness of pattern.

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

Claudia
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re: "Three Kings"

Postby Pat » Mon Aug 20, 2007 3:56 pm

claudiarabia wrote:
      Three Kings

      In this puzzle I wanted to create the illusion of a threefoldness of pattern

      [ 22 clues ]
Code: Select all
 . . . . 6 . . . .
 . 7 . . 1 . . 8 .
 . . 3 7 . . 9 . .
 . . 1 . . . 4 6 3
 9 8 . . . . 7 . .
 . . . . . . . 5 .
 . . 6 3 8 . . . .
 . 4 . 2 . 5 . . .
 . . . 9 . . . . .




yes, a nice illusion

why don't you mention that you've also posted an easier version --
claudiarabia wrote:
Code: Select all
 . . . . 6 . . . .
 . 7 . . 1 . . 8 .
 . . 3 7 . . 9 . .
 . . 1 . . . 4 6 3
 9 8 . . . . 7 . .
 . . . . . . . 5 .
 . . 6 3 7 . . . .
 . 4 . 2 . 5 . . .
 . . . 9 . . . . .


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Re: re: "Three Kings"

Postby claudiarabia » Tue Aug 21, 2007 11:23 am

Pat"][quote="claudiarabia wrote:[list][list]Three Kings

........
yes, a nice illusion

why don't you mention that you've also posted an easier version --
claudiarabia wrote:
Code: Select all
 . . . . 6 . . . .
 . 7 . . 1 . . 8 .
 . . 3 7 . . 9 . .
 . . 1 . . . 4 6 3
 9 8 . . . . 7 . .
 . . . . . . . 5 .
 . . 6 3 7 . . . .
 . 4 . 2 . 5 . . .
 . . . 9 . . . . .


End quote=Pat


Dear Pat, I didn't mention this because this is another forum an there is no obligation here to refer to other forums when something was posted there. When I make a puzzle I produce very often several levels of difficulty and then the SA-Forum gets the versions that matches in difficulty with the Sudoku-Assistenten 2.0. I don't want to post a certain puzzle in both forums. Sometimes I make here and there a reference to some mutable clues so that both forums will have the other puzzles too. In this case I didn't. Shame, shame shame! ;-) At the beginning of my postings here I received some complaints that my puzzles were to easy for the people here. That's why this forum will get mostly the more difficult puzzles and and I think it is fine like this.

And here is a more easy puzzle.
Code: Select all
. . . . 8 . . . .
. 9 . 5 . 1 . 7 .
. . 2 . . . 3 . .
. 7 . . . . . 5 .
6 . . . 4 . . . 9
. 8 . . . . . 1 .
. . 3 . . . 6 . .
. 1 . 9 . 2 . 8 .
. . . . 7 . . . .
SE 4.0 There is a mutable clue in r2c8 from 7 to 2 which gives one more triplet. But the difficulty remains

Claudia
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double diagonal symmetry

Postby claudiarabia » Thu Aug 23, 2007 5:10 pm

Code: Select all
. . 3 . . 6 . . .
. 9 . . . . 8 . .
4 . . 5 . . . 7 .
. . 6 . . 7 . . 3
. . . . 1 . . . .
5 . . 9 . . 4 . .
. 8 . . . 3 . . 6
. . 7 . . . . 9 .
. . . 4 . . 5 . .
SE 8.4

Code: Select all
. . 3 . . 6 . . .
. 9 . . . . 8 . .
4 . . 5 . . . 7 .
. . 6 . . 1 . . 3
. . . . 7 . . . .
5 . . 9 . . 2 . .
. 8 . . . 3 . . 6
. . 7 . . . . 9 .
. . . 4 . . 5 . .
Somewhat easier SE 7.3

Claudia
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very easy

Postby claudiarabia » Tue Aug 28, 2007 8:46 pm

Code: Select all
. . 9 . . . 3 . .
. 7 . 8 . 2 . 4 .
. 1 . . 5 . . 6 .
. . 3 . . . 4 . .
. . . 1 . 9 . . .
. . 2 . . . 5 . .
. 6 . . 3 . . 8 .
. 5 . 4 . 7 . 1 .
. . 1 . . . 2 . .
a not minimal cross SE 1.5

Claudia
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Re: very easy

Postby m_b_metcalf » Tue Aug 28, 2007 10:14 pm

claudiarabia wrote:
Code: Select all
. . 9 . . . 3 . .
. 7 . 8 . 2 . 4 .
. 1 . . 5 . . 6 .
. . 3 . . . 4 . .
. . . 1 . 9 . . .
. . 2 . . . 5 . .
. 6 . . 3 . . 8 .
. 5 . 4 . 7 . 1 .
. . 1 . . . 2 . .
a not minimal cross SE 1.5

Claudia

Similar, but minimal:
Code: Select all
 . . 6 . . . 3 . .
 . 7 . 8 . 6 . 5 .
 . 9 . . 5 . . 6 .
 . . 3 . . . 7 . .
 . . . 7 . 9 . . .
 . . 2 . . . 5 . .
 . 6 . . 2 . . 8 .
 . 3 . 5 . 8 . 1 .
 . . 1 . . . 2 . .

Regards,

Mike Metcalf
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Postby Eioru » Tue Sep 11, 2007 2:49 pm

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


Cancer, SE=4.4
Other constellation?
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Postby m_b_metcalf » Tue Sep 11, 2007 3:12 pm

Eioru wrote:Cancer, SE=4.4

Code: Select all
 . . . . . . . . .
 . 4 6 7 9 2 5 . .
 7 . . 8 . . . 9 .
 1 . . 4 . . . . .
 . 3 5 . . . 4 7 .
 . . . . . 8 . . 6
 . 2 . . . 7 . . 4
 . . 4 9 6 1 2 5 .
 . . . . . . . . .    SE 6.6, r4c4 redundant

Regards,

Mike Metcalf
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Postby Mauricio » Tue Sep 11, 2007 4:24 pm

Code: Select all
 . . . . . . . . .
 . 1 2 3 4 5 6 . .
 5 . . 1 . . . 7 .
 4 . . 8 . . . . .
 . 9 6 . . . 4 1 .
 . . . . . 9 . . 6
 . 5 . . . 2 . . 3
 . . 3 6 5 1 8 2 .
 . . . . . . . . .     ER 9.0,minimal
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How about this fully symmetric pattern?

Postby claudiarabia » Fri Sep 21, 2007 3:17 pm

I searched a lot of time till I finally was successful with this:
Code: Select all
. . . 9 . 2 . . .
. 7 . . . . . 8 .
. . 6 . 5 . 1 . .
1 . . . . . . . 9
. . 5 . 6 . 3 . .
4 . . . . . . . 6
. . 2 . 3 . 7 . .
. 9 . . . . . 6 .
. . . 4 . 1 . . .
SE 8.5 Minimal, untouchable

Any easier puzzle with this pattern?

Claudia
Last edited by claudiarabia on Fri Sep 21, 2007 11:34 am, edited 1 time in total.
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Re: How about this fully symmetric pattern?

Postby m_b_metcalf » Fri Sep 21, 2007 3:31 pm

claudiarabia wrote:SE 8.5

Any easier puzzle with this pattern?

Claudia


Code: Select all
 . . . 9 . 2 . . .
 . 7 . . . . . 5 .
 . . 6 . 5 . 1 . .
 1 . . . . . . . 9
 . . 5 . 6 . 3 . .
 4 . . . . . . . 8
 . . 2 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 4 . 1 . . .  SE 7.2

Code: Select all
 
 . . . 9 . 4 . . .
 . 7 . . . . . 5 .
 . . 6 . 2 . 8 . .
 2 . . . . . . . 4
 . . 3 . 6 . 2 . .
 1 . . . . . . . 5
 . . 2 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 5 . 1 . . .  SE 8.3

Code: Select all
 
 . . . 9 . 4 . . .
 . 7 . . . . . 5 .
 . . 6 . 2 . 8 . .
 2 . . . . . . . 4
 . . 3 . 7 . 2 . .
 1 . . . . . . . 5
 . . 8 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 5 . 1 . . . SE 7.3

 

For starters.

Regards,

Mike Metcalf
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Re: How about this fully symmetric pattern?

Postby m_b_metcalf » Fri Sep 21, 2007 3:48 pm

Main course:
Code: Select all
 . . . 9 . 2 . . .
 . 7 . . . . . 8 .
 . . 6 . 5 . 1 . .
 1 . . . . . . . 9
 . . 7 . 6 . 3 . .
 4 . . . . . . . 6
 . . 5 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 4 . 1 . . .  SE 2.0
Code: Select all
 . . . 9 . 2 . . .
 . 7 . . . . . 8 .
 . . 6 . 5 . 1 . .
 1 . . . . . . . 9
 . . 7 . 6 . 4 . .
 2 . . . . . . . 6
 . . 5 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 4 . 1 . . .  SE 2.6
Code: Select all
 . . . 9 . 8 . . .
 . 7 . . . . . 8 .
 . . 6 . 5 . 1 . .
 1 . . . . . . . 9
 . . 7 . 6 . 4 . .
 2 . . . . . . . 6
 . . 5 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 4 . 2 . . .  SE 3.4
Code: Select all
 . . . 9 . 8 . . .
 . 7 . . . . . 3 .
 . . 6 . 4 . 1 . .
 1 . . . . . . . 9
 . . 7 . 6 . 4 . .
 2 . . . . . . . 6
 . . 5 . 3 . 7 . .
 . 9 . . . . . 6 .
 . . . 2 . 4 . . .  SE 6.6
Code: Select all
 . . . 9 . 6 . . .
 . 7 . . . . . 3 .
 . . 6 . 4 . 8 . .
 8 . . . . . . . 9
 . . 7 . 6 . 4 . .
 2 . . . . . . . 6
 . . 5 . 3 . 7 . .
 . 9 . . . . . 2 .
 . . . 2 . 4 . . .  SE 4.5
Code: Select all
 . . . 9 . 6 . . .
 . 7 . . . . . 3 .
 . . 6 . 4 . 8 . .
 8 . . . . . . . 9
 . . 7 . 1 . 4 . .
 2 . . . . . . . 6
 . . 1 . 3 . 7 . .
 . 9 . . . . . 2 .
 . . . 2 . 4 . . .  SE 1.5
Code: Select all
 . . . 9 . 2 . . .
 . 7 . . . . . 8 .
 . . 6 . 8 . 5 . .
 1 . . . . . . . 9
 . . 8 . 6 . 3 . .
 4 . . . . . . . 2
 . . 1 . 3 . 7 . .
 . 8 . . . . . 6 .
 . . . 4 . 1 . . .  SE 7.9
Code: Select all
 . . . 9 . 2 . . .
 . 7 . . . . . 8 .
 . . 6 . 4 . 5 . .
 5 . . . . . . . 9
 . . 8 . 6 . 3 . .
 4 . . . . . . . 2
 . . 1 . 3 . 7 . .
 . 8 . . . . . 6 .
 . . . 4 . 1 . . .  SE 9.0
Code: Select all
 . . . 9 . 2 . . .
 . 7 . . . . . 8 .
 . . 6 . 4 . 5 . .
 9 . . . . . . . 2
 . . 8 . 6 . 3 . .
 4 . . . . . . . 1
 . . 3 . 5 . 7 . .
 . 2 . . . . . 6 .
 . . . 4 . 8 . . .  SE 7.6
Code: Select all
 . . . 7 . 2 . . .
 . 7 . . . . . 8 .
 . . 6 . 4 . 5 . .
 9 . . . . . . . 2
 . . 8 . 7 . 4 . .
 4 . . . . . . . 1
 . . 3 . 5 . 7 . .
 . 5 . . . . . 6 .
 . . . 1 . 9 . . .  SE 9.1

Regards,

Mike Metcalf
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Postby m_b_metcalf » Fri Sep 21, 2007 7:19 pm

The lightest three items from the dessert trolly:
Code: Select all
 . . . 9 . 2 . . .
 . 8 . . . . . 9 .
 . . 1 . 8 . 6 . .
 7 . . . . . . . 3
 . . 6 . 7 . 1 . .
 1 . . . . . . . 2
 . . 4 . 1 . 7 . .
 . 5 . . . . . 8 .
 . . . 7 . 6 . . .  SE 2.8
Code: Select all
 . . . 5 . 1 . . .
 . 9 . . . . . 7 .
 . . 7 . 6 . 2 . .
 8 . . . . . . . 3
 . . 1 . 5 . 8 . .
 9 . . . . . . . 6
 . . 6 . 2 . 5 . .
 . 8 . . . . . 3 .
 . . . 1 . 9 . . .  SE 2.5
Code: Select all
 . . . 2 . 8 . . .
 . 1 . . . . . 9 .
 . . 6 . 4 . 5 . .
 8 . . . . . . . 1
 . . 4 . 5 . 6 . .
 3 . . . . . . . 7
 . . 9 . 8 . 4 . .
 . 3 . . . . . 7 .
 . . . 4 . 6 . . .  SE 2.3
 

Bon appétit,

Mike Metcalf
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the squaration of the circle

Postby claudiarabia » Sat Sep 22, 2007 11:42 am

Hi Mike,

impressive work you did on the pattern
Code: Select all
 . . . x . x . . .
 . x . . . . . x .
 . . x . x . x . .
 x . . . . . . . x
 . . x . x . x . .
 x . . . . . . . x
 . . x . x . x . .
 . x . . . . . x .
 . . . x . x . . .
While changing the outer columns I realized that this pattern is morphologic equivalent to
Code: Select all
x . . . . . . . x
. x . . x . . x .
. . . x . x . . .
. . x . . . x . .
. x . . x . . x .
. . x . . . x . .
. . . x . x . . .
. x . . x . . x .
x . . . . . . . x

The world of fully symmetric puzzles seems to be a village instead.

Claudia
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