Valentine 7.2

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Valentine 7.2

Postby denis_berthier » Sun Feb 14, 2021 8:45 am

.
Did anyone already try to generate puzzles with this 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 . . .
  . . . . X . . . .


It seems to be relatively difficult (compared to other patterns) to find hard ones.

Here is a non-minimal one, with SER 7.2.

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

.82...49.9..8.3..76...1...37.......48.......9.1.....2...9...5.....6.7.......4.... #   408 FNBTY C22.m/S2.v
22 givens, SER 7.2


[Edit]: Mike checked it is indeed minimal.
Last edited by denis_berthier on Sun Feb 14, 2021 2:53 pm, edited 1 time in total.
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Re: Valentine 7.2

Postby JPF » Sun Feb 14, 2021 9:38 am

denis_berthier wrote:.
Did anyone already try to generate puzzles with this 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 . . .
  . . . . X . . . .
http://forum.enjoysudoku.com/sudokus-with-an-original-rare-shape-t4147-135.html#p34491
http://forum.enjoysudoku.com/sudokus-with-an-original-rare-shape-t4147-525.html#p45410
http://forum.enjoysudoku.com/for-the-ladies-t5902.html#p52719
http://forum.enjoysudoku.com/hearts-for-gentlemen-only-t5255.html#p41050
http://forum.enjoysudoku.com/sudoku-with-a-heart-t1754.html

JPF
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Re: Valentine 7.2

Postby m_b_metcalf » Sun Feb 14, 2021 9:57 am

denis_berthier wrote:It seems to be relatively difficult (compared to other patterns) to find hard ones.

Here is a non-minimal one, with SER 7.2.

You're right, but here's a minimal one. also 7.2:
Code: Select all
 . 1 2 . . . 3 4 .
 4 . . 1 . 5 . . 6
 7 . . . 8 . . . 5
 6 . . . . . . . 3
 1 . . . . . . . 4
 . 8 . . . . . 2 .
 . . 4 . . . 9 . .
 . . . 7 . 6 . . .
 . . . . 3 . . . .

Also, I've posted a Hearts Samurai in the Variants Forum.

Mike

[Edit: I find that your posted puzzle is, in fact, minimal.]
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Re: Valentine 7.2

Postby JPF » Sun Feb 14, 2021 12:13 pm

Code: Select all
 . 1 2 | . . . | 3 4 .
 5 . . | 3 . 6 | . . 7
 4 . . | . 1 . | . . 5
-------+-------+-------
 2 . . | . . . | . . 4
 1 . . | . . . | . . 8
 . 5 . | . . . | . 9 .
-------+-------+-------
 . . 6 | . . . | 2 . .
 . . . | 9 . 7 | . . .
 . . . | . 8 . | . . .    ED=8.8/1.2/1.2

JPF
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Re: Valentine 7.2

Postby denis_berthier » Sun Feb 14, 2021 2:47 pm

Hi jpf, Mike,
thanks for the references.

m_b_metcalf wrote:here's a minimal one. also 7.2:
Code: Select all
 . 1 2 . . . 3 4 .
 4 . . 1 . 5 . . 6
 7 . . . 8 . . . 5
 6 . . . . . . . 3
 1 . . . . . . . 4
 . 8 . . . . . 2 .
 . . 4 . . . 9 . .
 . . . 7 . 6 . . .
 . . . . 3 . . . .


Unless I made some error in the permutations, it seems your puzzle can be obtained from mine by applying the following circular permutations on digits:
Code: Select all
(1 8) (2) (6 7) (3 5 9 4)
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Re: Valentine 7.2

Postby denis_berthier » Sun Feb 14, 2021 2:53 pm

JPF wrote:
Code: Select all
 . 1 2 | . . . | 3 4 .
 5 . . | 3 . 6 | . . 7
 4 . . | . 1 . | . . 5
-------+-------+-------
 2 . . | . . . | . . 4
 1 . . | . . . | . . 8
 . 5 . | . . . | . 9 .
-------+-------+-------
 . . 6 | . . . | 2 . .
 . . . | 9 . 7 | . . .
 . . . | . 8 . | . . .    ED=8.8/1.2/1.2

JPF


That's a much harder one, solvable in W6:
Hidden Text: Show
***********************************************************************************************
*** SudoRules 20.1.s based on CSP-Rules 2.1.s, config = W+SFin
*** Using CLIPS 6.32-r779
*** Download from: https://github.com/denis-berthier/CSP-Rules-V2.1
***********************************************************************************************
6 singles
201 candidates, 1185 csp-links and 1185 links. Density = 5.9%
whip[1]: c8n7{r9 .} ==> r9c7 ≠ 7
whip[1]: c8n5{r9 .} ==> r9c7 ≠ 5, r8c7 ≠ 5
whip[1]: r2n9{c3 .} ==> r3c3 ≠ 9, r1c1 ≠ 9, r3c2 ≠ 9
whip[1]: c1n9{r9 .} ==> r7c2 ≠ 9, r9c2 ≠ 9, r9c3 ≠ 9
whip[1]: r2n8{c3 .} ==> r3c3 ≠ 8, r1c1 ≠ 8, r3c2 ≠ 8
whip[1]: r1n8{c6 .} ==> r3c4 ≠ 8, r3c6 ≠ 8
whip[1]: b6n6{r6c7 .} ==> r9c7 ≠ 6, r3c7 ≠ 6, r8c7 ≠ 6
Entering_relation_bivalue_with_<Fact-13376>
Entering_level_S2_with_<Fact-13489>
hidden-pairs-in-a-column: c3{n1 n5}{r8 r9} ==> r9c3 ≠ 7, r9c3 ≠ 4, r9c3 ≠ 3, r8c3 ≠ 8, r8c3 ≠ 4, r8c3 ≠ 3
biv-chain[3]: r1c1{n7 n6} - r1c9{n6 n9} - r7n9{c9 c1} ==> r7c1 ≠ 7
z-chain[3]: r7n7{c2 c8} - r7n8{c8 c1} - r8c1{n8 .} ==> r7c2 ≠ 3
biv-chain[4]: r8c1{n3 n8} - c7n8{r8 r3} - b3n9{r3c7 r1c9} - r7n9{c9 c1} ==> r7c1 ≠ 3
z-chain[4]: c2n2{r8 r9} - c2n4{r9 r7} - r7n7{c2 c8} - r7n8{c8 .} ==> r8c2 ≠ 8
biv-chain[5]: r3c8{n6 n8} - c7n8{r3 r8} - r8n4{c7 c2} - r8n2{c2 c5} - b8n6{r8c5 r9c4} ==> r9c8 ≠ 6
biv-chain[4]: r9n6{c4 c9} - r1c9{n6 n9} - r3n9{c7 c6} - b2n2{r3c6 r3c4} ==> r9c4 ≠ 2
z-chain[5]: r7n7{c2 c8} - r7n8{c8 c1} - c1n9{r7 r9} - r9c7{n9 n4} - r8n4{c7 .} ==> r7c2 ≠ 4
whip[1]: r7n4{c6 .} ==> r9c4 ≠ 4, r9c6 ≠ 4
hidden-pairs-in-a-block: b7{n2 n4}{r8c2 r9c2} ==> r9c2 ≠ 7, r9c2 ≠ 3, r8c2 ≠ 3
whip[1]: b7n3{r9c1 .} ==> r6c1 ≠ 3
biv-chain[4]: r3c6{n2 n9} - c7n9{r3 r9} - r9n4{c7 c2} - r9n2{c2 c6} ==> r5c6 ≠ 2
z-chain-rc[6]: r1c9{n9 n6} - r1c1{n6 n7} - r9c1{n7 n3} - r8c1{n3 n8} - r8c7{n8 n4} - r9c7{n4 .} ==> r9c9 ≠ 9
z-chain[4]: r9n2{c6 c2} - r9n4{c2 c7} - b9n9{r9c7 r7c9} - r7n3{c9 .} ==> r9c6 ≠ 3
z-chain[4]: r9n2{c6 c2} - r9n4{c2 c7} - b9n9{r9c7 r7c9} - r7n1{c9 .} ==> r9c6 ≠ 1
z-chain[5]: r6n1{c6 c4} - r6n4{c4 c3} - r6n3{c3 c5} - c6n3{r4 r7} - c6n1{r7 .} ==> r6c6 ≠ 8
z-chain[5]: r6c7{n6 n7} - r6c1{n7 n8} - r8c1{n8 n3} - r9n3{c1 c9} - r9n6{c9 .} ==> r6c4 ≠ 6
t-whip[5]: r9n6{c4 c9} - r9n3{c9 c1} - r8c1{n3 n8} - r8c8{n8 n5} - c3n5{r8 .} ==> r9c4 ≠ 5
t-whip[5]: c6n4{r6 r7} - c6n1{r7 r6} - c6n3{r6 r4} - b4n3{r4c2 r6c3} - r6n4{c3 .} ==> r5c4 ≠ 4
t-whip[5]: c6n3{r6 r7} - c6n1{r7 r6} - c6n4{r6 r5} - c3n4{r5 r6} - r6n3{c3 .} ==> r4c5 ≠ 3
whip[5]: c6n1{r7 r6} - c6n4{r6 r5} - c3n4{r5 r6} - r6n3{c3 c5} - r7c5{n3 .} ==> r7c6 ≠ 5
z-chain[6]: c4n4{r6 r7} - c4n1{r7 r9} - r9n6{c4 c9} - r9n3{c9 c1} - c1n7{r9 r1} - c5n7{r1 .} ==> r6c4 ≠ 7
t-whip[6]: r3n9{c6 c7} - r1c9{n9 n6} - r3n6{c8 c2} - r1c1{n6 n7} - b7n7{r9c1 r7c2} - r5c2{n7 .} ==> r5c6 ≠ 9
z-chain[5]: r5n9{c3 c5} - r5n2{c5 c4} - r3c4{n2 n7} - r3c3{n7 n3} - c2n3{r3 .} ==> r4c2 ≠ 9
t-whip[6]: r8c1{n8 n3} - r9n3{c1 c9} - r9n6{c9 c4} - r9n1{c4 c3} - r8n1{c3 c9} - r8n6{c9 .} ==> r8c8 ≠ 8
biv-chain[3]: r3n6{c2 c8} - c8n8{r3 r7} - r7n7{c8 c2} ==> r3c2 ≠ 7
biv-chain[3]: b1n7{r3c3 r1c1} - c1n6{r1 r6} - r6c7{n6 n7} ==> r6c3 ≠ 7
biv-chain[4]: r1c1{n7 n6} - b3n6{r1c9 r3c8} - r8c8{n6 n5} - r9c8{n5 n7} ==> r9c1 ≠ 7
hidden-single-in-a-block ==> r7c2 = 7
hidden-single-in-a-block ==> r9c8 = 7
whip[1]: b7n8{r8c1 .} ==> r6c1 ≠ 8
naked-pairs-in-a-row: r6{c1 c7}{n6 n7} ==> r6c5 ≠ 7, r6c5 ≠ 6
stte
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Re: Valentine 7.2

Postby m_b_metcalf » Sun Feb 14, 2021 4:10 pm

denis_berthier wrote:Unless I made some error in the permutations, it seems your puzzle can be obtained from mine by applying the following circular permutations on digits:
Code: Select all
(1 8) (2) (6 7) (3 5 9 4)

Yes. But, as you claimed yours was non-minimal (which it isn't) and mine was minimal, I assumed they had to be different.

Mike
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Re: Valentine 7.2

Postby denis_berthier » Sun Feb 14, 2021 4:27 pm

m_b_metcalf wrote:
denis_berthier wrote:Unless I made some error in the permutations, it seems your puzzle can be obtained from mine by applying the following circular permutations on digits:
Code: Select all
(1 8) (2) (6 7) (3 5 9 4)

Yes. But, as you claimed yours was non-minimal (which it isn't) and mine was minimal, I assumed they had to be different.

My correct claim should have been that it was generated without the requirement of being minimal. It happened to be minimal by chance.
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Re: Valentine 7.2

Postby JPF » Mon Feb 15, 2021 9:54 am

For your files or for next year, here is Valentine 9.0:
Code: Select all
.12...34.5..3.1..67...4...82.......43.......7.8.....6...9...1.....5.6.......8....  ED=9.0/1.2/1.2

JPF
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Re: Valentine 7.2

Postby denis_berthier » Mon Feb 15, 2021 11:45 am

JPF wrote:For your files or for next year, here is Valentine 9.0:
Code: Select all
.12...34.5..3.1..67...4...82.......43.......7.8.....6...9...1.....5.6.......8....  ED=9.0/1.2/1.2

JPF

Thanks

Solvable in W8.
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Re: Valentine 7.2

Postby rjamil » Fri Feb 19, 2021 6:00 pm

Hi all,

Not sure about importance but sharing herewith consceptis puzzles' MultiSudoku offers weekly bonus on happy Valentine's day.

R. Jamil
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Re: Valentine 7.2

Postby denis_berthier » Fri Feb 19, 2021 7:22 pm

rjamil wrote:Hi all,
Not sure about importance but sharing herewith consceptis puzzles' MultiSudoku offers weekly bonus on happy Valentine's day.
R. Jamil

Hi rjamil,
I tried
- the first 4: solvable by singles
- the last two (#7, #8): solvable by naked / hidden pairs.
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Re: Valentine 7.2

Postby rjamil » Sat Feb 20, 2021 11:46 am

denis_berthier wrote:Hi rjamil,
I tried
- the first 4: solvable by singles
- the last two (#7, #8): solvable by naked / hidden pairs.

Hi denis_berthier,

My intention was none other than just to answer your OP question:
denis_berthier wrote:Did anyone already try to generate puzzles with this pattern?


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Re: Valentine 7.2

Postby denis_berthier » Sat Feb 20, 2021 12:44 pm

rjamil wrote:
denis_berthier wrote:Hi rjamil,
I tried
- the first 4: solvable by singles
- the last two (#7, #8): solvable by naked / hidden pairs.

Hi denis_berthier,
My intention was none other than just to answer your OP question:
denis_berthier wrote:Did anyone already try to generate puzzles with this pattern?

R. Jamil

Yes, thanks.
But don't you think it's also interesting to know the level of their puzzles?
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