The New Sudoku Players' Forum

[Hajime]

This can be explained by the fact that JigsawExplainer uses the original SE solving techinques, and Hajime's SiSeSuSo.exe has implemented other solving techniques.

But independent of solving methods there is only 1 solution for a good puzzle

[urhegyi]

This can be explained by the fact that JigsawExplainer uses the original SE solving techinques, and Hajime's SiSeSuSo.exe has implemented other solving techniques.

But independent of solving methods there is only 1 solution for a good puzzle

I posted my 5 solutions; It took a while to be complete and check them all. But I think they are correct.

[Hajime]

In total 5 solutions

Look like a bug at my side.
I will look into this, but after the weekend...

[1to9only]

14-clues, Medium:

Code: Select all

..1..4.........7.8...5....3........7.....9.2.3.........4..7......5.......8....... ED=3.6/1.2/1.2
.......7.......3......5..6.........5.6.8.....3........9....8...4.3.........6..4.. ED=3.4/1.5/1.5


This is the last twodoku I post, as I go work on making the tools I developed more generic, for other solution grids, jigsaws, overlaps...

[urhegyi]

I finished a first prototype of a generator/solver for overlapping jigsaw sudokus this night. This is the hardest example it can generate at this moment. Can you rate this please and check it?

grid1:

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......56....194..7.8...1.............5..6..9..3.....186...................1.5.... 111112222113122244333155224633555554633355444667777744668777999668788999688888999

grid2:

Code: Select all

....1...........64.......2......2...9........3...7..4....4..6.9.7.............18. 999888886999887866999777866447777766444553336455555336422551333442221311222211111

[1to9only]

I finished a first prototype of a generator/solver for overlapping jigsaw sudokus this night. This is the hardest example it can generate at this moment. Can you rate this please and check it?

Code: Select all

......56....194..7.8...1.............5..6..9..3.....186...................1.5.... ED=2.9/1.2/1.2
....1...........64.......2......2...9........3...7..4....4..6.9.7.............18. ED=2.8/1.2/1.2


Nice going! In general, you'll have to generate a number of these, rate/review them (e.g. techniques needed, solving path, ...) to pick out an interesting one for publishing! I have added 'Options' to rotate jigsaw left/right by 90 degrees, and I'll try to get the twodoku rating stuff into another pre-release sometime next week.

I've also generated a number of grid 1 and grid 2 solutions, from which I pick 2 to generate a twodoku. Samples are below (note: I'm using another set of solutions!). If you randomly pick a grid 1 and a grid 2 - you'll need to renumber grid 1 block 9 or grid 2 block 1 to match before using ...

ATTACHMENTS
twodoku.grid1.solutions.zip (39,679 bytes)
twodoku.grid2.solutions.zip (39,663 bytes)

[urhegyi]

A symmetrical example with two completely empty blocks!
grid1:

2empty-01.png (21.62 KiB) Viewed 632 times

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.4.2.35.1.......5.98...12..8.6....34..7....9.2........6........5.4.........95.... 111112222113122244333155224633555554633355444667777744668777999668788999688888999


grid2:

2empty-02.png (21.12 KiB) Viewed 632 times

Code: Select all

....16.........7.4........7........3.6....5..39....2.5..84...19.7.......4.27.9.8. 999888886999887866999777866447777766444553336455555336422551333442221311222211111


[urhegyi]

Any ideas how to generate a colored picture of the whole twodoku, eventually with updated pencilmarks in the overlapping area in HTML?

[1to9only]

Any ideas how to generate a colored picture of the whole twodoku, eventually with updated pencilmarks in the overlapping area in HTML?

Quck answer: I dont know.
But if you want to know how I would go about doing this:
I'll take a look at https://www.sudokuwiki.org/jigsaw.htm - it displays one jigsaw only,
but you can 'borrow' html elements from the web page to make up your twodoku.

[urhegyi]

This is from a modified template in word:

Code: Select all

+-------------------+---------------+
| .   4   .   2   . | 3   5   .   1 |
|       +---+   +---+       +-------+
| .   . | . | . | .   .   . | 5   . |
+-------+   |   +-------+   +---+   |
| 9   8   . | . | .   1 | 2   . | . |
+---+       +---+       +-------+   |
| 8 | .   6 | .   .   .   .   3 | 4 |
|   |       +---+       +-------+   |
| . | .   7   . | .   . | .   9   . |
|   +---+-------+-------+---+       |
| 2   . | .   .   .   .   . | .   . |
|       +---+           +---+-------+-------------------+---+
| 6   . | . | .   .   . | .   .   . | .   1   6   .   . | . |
|       |   |   +-------+           |       +---+   +---+   |
| 5   . | 4 | . | .   . | .   .   . | .   . | . | 7 | .   4 |
|   +---+   +---+       |           +-------+   |   |       |
| . | .   .   9   5   . | .   .   . | .   .   . | . | .   7 |
+---+-------------------+-------+---+           +---+       |
                        | .   . | .   .   .   .   . | .   3 |
                        |       +---+-------+-------+---+   |
                        | .   6   . | .   . | .   5   . | . |
                        |   +-------+       +---+       |   |
                        | 3 | 9   .   .   .   . | 2   . | 5 |
                        |   +-------+       +---+       +---+
                        | . | .   8 | 4   . | . | .   1   9 |
                        |   +---+   +-------+   |   +-------+
                        | .   7 | .   .   . | . | . | .   . |
                        +-------+       +---+   +---+       |
                        | 4   .   2   7 | .   9   .   8   . |
                        +---------------+-------------------+


[urhegyi]

The same converted to JPG

[1to9only]

Another Quick&Easy solution would be to use the smaller jigsaw images (without or with the correct pencilmarks).
I've used this method to put up 2 jigsaws side-by-side in previous posts.

'Variation', and uncheck 'Bigger Cells', and restart Explainer to save the two jigsaw images.
Use Paint, or something else to superimpose one image over the other.
The cell size (smaller pic) is 45 pixels, the single jigsaw image is 409x409, so the twodoku canvas required is 679x679.
Place grid 1 first, then grid 2 - the fiddly bits is to correctly line up the ovelapped region.

[Hajime]

Any ideas how to generate a colored picture of the whole twodoku, eventually with updated pencilmarks in the overlapping area in HTML?

Use SiSeSuSo.exe to show any overlapping Gattai, also jigsaw pieces in any color you want. With candidates below each cell or in telephone style in HTML. See https://sites.google.com/site/sisesuso/sisesuso_exe for download a zip. For generating.... wait until mid next week. Have to find a bug first
A TwoDoku is a Sensei-1 Gattai.

[urhegyi]

I thought is wasn't possible to generate hard examples with the original grids. The hard work seems to yield their fruits: finally I found this!
I'm very curious to the hardness rating of the total twodoku. I know the first grid is valid and solvable with a rating 4.2!
grid1:

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......5...6.1.....9...41.7...........57...3.2........8.98...............4...5.... 111112222113122244333155224633555554633355444667777744668777999668788999688888999

grid2:

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..............37................2...9........3...71...............9.4...4.2....86 999888886999887866999777866447777766444553336455555336422551333442221311222211111

[urhegyi]

Because the first grid is solvable on it's own, it can be combined with every other second grid from the same solution set with an unique solution!
grid1:

Code: Select all

......5...6.1.....9...41.7...........57...3.2........8.98...............4...5.... 111112222113122244333155224633555554633355444667777744668777999668788999688888999

grid2:

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.....6..8......7.........2...7.......64.2....3........................5......9..6 999888886999887866999777866447777766444553336455555336422551333442221311222211111