Everything about Sudoku that doesn't fit in one of the other sections
another 20 step puzzle:
Code: Select all
`...|9.7|8.1...|...|......|5.1|7.9-----------4.2|8..|6.7...|...|...3.5|..9|1.8-----------5.4|6.2|......|...|...7.8|4.3|...`
ab

Posts: 451
Joined: 06 September 2005

a brand-new 1-stepper with 40 clues,
somme symmetry, but not symmetrically minimal.

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

It should contain lots of minimal n-steppers like these :

14-stepper : 6,6,4,4,3,1,1,3,3,4,9,7,4,2
24 clues - minimal
Code: Select all
` . 2 6 | . 8 7 | 4 . . . 7 . | . . . | 8 9 . 5 8 . | . . . | . . .-------+-------+------- . 3 . | . . 6 | . . 1 4 . . | . . . | . . . 2 . . | 4 . 5 | . 3 .-------+-------+------- . . . | 6 . . | . . . 9 . . | . . . | . 8 . . . . | . 2 . | 5 . 3`

15-stepper : 7,3,2,2,1,3,5,4,5,9,2,3,4,4,1
26 clues - symmetrically minimal
Code: Select all
` . 2 6 | . 8 . | 4 . . . 7 . | . . . | . 9 . . . . | . 4 1 | . . .-------+-------+------- . 3 . | 7 . . | . . 1 4 . 1 | . . . | 7 . 9 2 . . | . . 5 | . 3 .-------+-------+------- . . . | 6 5 . | . . . . 5 . | . . . | . 8 . . . 8 | . 2 . | 5 7 .`

JPF
JPF
2017 Supporter

Posts: 3754
Joined: 06 December 2005
Location: Paris, France

Tons of puzzles generated...

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

Ruud.
Ruud

Posts: 664
Joined: 28 October 2005

Ruud wrote:Tons of puzzles generated...

Ruud.

Most of us mere mortals would be happy to find anything approaching a 26 stepper. I've not found anything better than 20 steps.
ab

Posts: 451
Joined: 06 September 2005

ab

Posts: 451
Joined: 06 September 2005

Here is a fully symmetric 22-stepper:
Code: Select all
` . . . | 9 . 6 | . . . . . 1 | . 3 . | 6 . . . 4 . | . 1 . | . 8 .-------+-------+------  4 . . | . . . | . . 2 . 7 6 | . . . | 9 5 .  5 . . | . . . | . . 8 -------+-------+------  . 5 . | . 7 . | . 4 .  . . 3 | . 9 . | 1 . .  . . . | 3 . 8 | . . .`
Ocean

Posts: 442
Joined: 29 August 2005

### Inferior puzzles

I would like to have a collection of very easy puzzles.

It seems that there is lack of interest, or the rules may be too restrictive.

Can we lower the requirements perhaps?
fermat

Posts: 105
Joined: 29 March 2006

ab wrote:Ruud also posted a whopping 293 contenders.

Stuff like this. I want that, the 293 contenders.
Where are they posted?
fermat

Posts: 105
Joined: 29 March 2006

fermat wrote:
ab wrote:Ruud also posted a whopping 293 contenders.

Stuff like this. I want that, the 293 contenders.
Where are they posted?

You can find Ruud's collection on page 3 in this thread. (But they are not necessarily 'easy').
.
fermat wrote:I would like to have a collection of very easy puzzles.

For the 'very easy' ones: These are about the easiest you can get:
Code: Select all
`## - Ten one-steppers:#076205340209407608510603029652000137000000000387000964160304092703908406098102570096108240802706103130204065265000489000000000978000316720405038601903704054807920081502670607309805520607043278000316000000000413000957150406038806701504094805260017209350908501204620803091192000875000000000546000913250407036704306509061902480092107350805309602160502097928000134000000000634000785780203046306708901059406870390215064204603805060704090936000578800000001152000436080902050405107609710568043052804960108509704490601035731000258000000000546000193820107049904203607073408510083705920506901803790803056218000749000000000475000361950604038607102405024309610001867500087201940650409087943000721200000005875000364730506018068103270004798600018409370205306108740801095482000936000000000356000781120705069807902503039108420## - 30 two-steppers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even three-steppers:# 970000063100070008000205000005802600020000010006903400000109000500040009860000041060103050340080092000000000100602003070000040900305008000000000580020037030406010 860000025200010008000708000003070800050603040007050600000905000100030009520000086 002000500000261000407000906020705010080000050090104080905000708000937000006000200 000629000072000180050000060900102004100000008700804005080000030037000290000531000 020000060350010047000906000005309800080000070001502400000107000970040085060000090 008040300000905000605000701020103060900000007050207040309000104000802000006010800##`
Ocean

Posts: 442
Joined: 29 August 2005

Thanks Ocean!
fermat

Posts: 105
Joined: 29 March 2006

a 22 stepper
Code: Select all
` . . . | . . . | . . 7   . 1 8 | 5 9 . | . . .   . 2 . | . 3 . | 9 5 .  -------+-------+------  . . 5 | 4 . . | . . .   3 . . | . 7 . | . . 4   . . . | . . 3 | 1 . .  -------+-------+------  . 6 7 | . 4 . | . 9 .   . . . | . 8 1 | 2 6 .   5 . . | . . . | . . .  `

tarek

tarek

Posts: 2647
Joined: 05 January 2006

if minimality is not an issue...

this 43-cell 1 stepper
Code: Select all
` 5 7 . | . . 8 | . 9 .   4 . 8 | 9 6 1 | 5 7 .   6 3 9 | 4 . . | . . .  -------+-------+------  . 6 5 | 3 2 . | 8 . .   1 . . | . 5 . | . . 4   . . 7 | . 8 9 | 3 6 .  -------+-------+------  . . . | . . 3 | 2 4 8   . 9 2 | 8 4 7 | 6 . 1   . 5 . | 6 . . | . 3 9 `
contains this 35-cell 2 stepper
Code: Select all
` 5 7 . | . . . | . 9 .   4 . 8 | 9 6 1 | . . .   6 3 9 | 4 . . | . . .  -------+-------+------  . . 5 | 3 2 . | 8 . .   1 . . | . 5 . | . . 4   . . 7 | . 8 9 | 3 . .  -------+-------+------  . . . | . . 3 | 2 4 8   . . . | 8 4 7 | 6 . 1   . 5 . | . . . | . 3 9  `
and this 29-cell 3 stepper
Code: Select all
` . 7 . | . . . | . 9 .   4 . 8 | 9 6 1 | . . .   6 2 . | . . . | . . .  -------+-------+------  . . 5 | 3 2 . | 8 . .   1 . . | . 5 . | . . 4   . . 7 | . 8 9 | 3 . .  -------+-------+------  . . . | . . . | . 4 8   . . . | 8 4 7 | 6 . 1   . 5 . | . . . | . 3 .  `

tarek

tarek

Posts: 2647
Joined: 05 January 2006

I found a 21 step puzzle:
Code: Select all
`...|...|1.....|..7|9..75.|.86|...-----------.34|...|.....6|...|7.....|...|86.-----------...|24.|.53..1|5..|.....2|...|...`
ab

Posts: 451
Joined: 06 September 2005

Some 22 steppers :

25 clues ; symmetrically minimal
Code: Select all
` . . 2 | . . . | . . 7 6 . 4 | . . . | . 1 . . 3 . | . . 6 | 5 4 .-------+-------+------- . . . | 8 . . | . . . 8 . 1 | . 2 . | 9 . 4 . . . | . . 9 | . . .-------+-------+------- . 2 8 | 5 . . | . 3 . . 6 . | . . . | 7 . 9 5 . . | . . . | 2 . .`

28 clues ; symmetrically minimal
Code: Select all
` . 5 . | 9 3 . | . . 6 . 8 9 | . . 2 | . 7 . 4 . . | . 8 7 | . . .-------+-------+------- . . . | . . . | . . 5 . . 4 | 2 . 9 | 1 . . 1 . . | . . . | . . .-------+-------+------- . . . | 1 2 . | . . 4 . 1 . | 4 . . | 6 5 . 8 . . | . 9 5 | . 2 .`

JPF
JPF
2017 Supporter

Posts: 3754
Joined: 06 December 2005
Location: Paris, France

to bridge the gap between high and low steppers

(and if symmetry is not an issue...)

this 1 stepper, 40 clues with some symmetry (previously posted)
Code: Select all
` 3 2 6 | . 8 7 | 4 . . . 7 . | . . . | 8 9 2 5 8 . | . 4 1 | . . .-------+-------+------- . 3 . | 7 . 6 | . . 1 4 . 1 | . . . | 7 . 9 2 . . | 4 . 5 | . 3 .-------+-------+------- . . . | 6 5 . | . 2 4 9 5 2 | . . . | . 8 . . . 8 | 1 2 . | 5 7 3`

contains :

this 21 stepper, 22 clues, minimal.
Code: Select all
` 3 . 6 | . . 7 | . . . . 7 . | . . . | 8 . . . 8 . | . 4 . | . . .-------+-------+------- . . . | 7 . 6 | . . 1 4 . 1 | . . . | . . 9 2 . . | . . 5 | . 3 .-------+-------+------- . . . | 6 . . | . . 4 9 . 2 | . . . | . 8 . . . . | . . . | 5 . .`

and some minimal 20 steppers.
Here is one, 23 clues :
Code: Select all
` 3 . . | . 8 . | . . . . 7 . | . . . | . 9 2 5 8 . | . 4 1 | . . .-------+-------+------- . 3 . | . . . | . . 1 4 . . | . . . | 7 . . . . . | 4 . . | . 3 .-------+-------+------- . . . | 6 5 . | . . . 9 . 2 | . . . | . 8 . . . . | 1 2 . | 5 . .`

JPF
JPF
2017 Supporter

Posts: 3754
Joined: 06 December 2005
Location: Paris, France

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