The New Sudoku Players' Forum

[Hajime]

This Sumo has 5 olympic rings (A), 3 medals (X) on 3 podia (W).
A=Asterisk, X=Sudoku-X, W=Windoku
2 Bands in the middle contain 7 consecutive empty boxes.
The center boxes of the 3x3 grids form the 14th clueless grid.
This 14th grid is a clover (A+W), light yellow in the picture.
The only technique required to solve this is: box to columns/rows/diagonals/... vv.
Picture:

https://www.dropbox.com/s/ztapth1882itsl6/OlympicSumo.PNG
Open the image link in a new tab in your browser.
It will not show up here. I don't know why...

In digits:

Hidden Text: Show

300002700090400050000300900069000000000000007200000000705000000030000000000030000
000000000001000400050000080500000003000000000038000290000000000000070000000000000
003800006080006020002001000000000610600000000000000004000000103000000040000010000
000090000000000000000302000800904007059701830000803000000000000000000000000000000
000050000000000000000804000200105007081709250000603000000000000000000000000000000
000400000007005000060009000000000000000000050000000000030001000002003000000200000
000000000000000000000000000090000070000000000800000005000000000000000000000000000
000008000000100800000200030000000000090000000000000000000700010000400600000005000
000000000000000000000000000000204000028903140600805003000408000000000000000050000
000000000000000000000000000000104000019203580600509004000405000000000000000030000
000040000090000000706000000900000000000000009024000000000900600030600090600003500
000000000000060000000000000038000260000000000600000007080000020009000600000000000
000050000000000040000000301000000007900000000000000430003006000080009020001200008

Enjoy, with pencil and paper of course , not with a blender

[enxio27]

Ooooh, fun!

[creint]

Solved within 4 seconds.
Looks like the board in the picture was made in excel.
Can your solver solve them too?

[enxio27]

Solved within 4 seconds.

I'm not sure what your point is in posting this. Are you simply using it to test your solver?

[SudoKai]

Since the 14'th Sudoku board contains additional constraints, I think it would be best to include an image of this clueless Sudoku board. Additionally, keeping track of things will also be a bit easier for the player.

sumo_clueless.png (146.29 KiB) Viewed 1490 times

[Hajime]

@SudoKai: thank you. This looks better indeed.
@enxio27: you are pretty enthusiastic, could you finish it?
@creint: 4 seconds is really impressive, but 4 seconds of fun is very short
I needed 2 seconds for the "olympic" idea, 2 weeks of preparation en 40 minutes to create it.
So I am busy with an "irregular ? clueless", solvable by people, but not likely by blenders/solvers....

[enxio27]

@enxio27: you are pretty enthusiastic, could you finish it?

I'm almost finished with the first pass through the grids. (I print them out on paper, one grid per sheet.) I don't get a lot of sudoku time each day, but I've been making good progress. Very enjoyable so far. Your Olympic theme is very clever!

[enxio27]

I just finished this puzzle, and enjoyed it very much. Difficulty level was just about right for my tastes for a puzzle of this complexity. It took me longer (more passes through the grids) than I expected, especially after completing Grid 14 (the clueless grid) on the first pass. That and the Windoku grids (11-13) were the quickest to complete; the plain grids (4, 5, 9, 10) took the longest.

[Hajime]

I just finished this puzzle, and enjoyed it very much.

Great, that is why I am posting these puzzels.

[enxio27]

What are all the variants and grid configurations your generator can make?

[Hajime]

What are all the variants and grid configurations your generator can make?

All variants are possible, but grids are always 9x9 and can be scattered per box or even per cell.
The Generator can make all kids of symmetry. And need the Solver to check if the variant is solvable.
The Solver has still limited methods:
- box--> row/column/box/diagonal etc elimination (also pointing pairs etc) and vv
- discover naked pairs/triple/quads, and after elimination a hidden set will be naked.
- x-wing,swordfish,jellyfish but these are rare.
This summer plan to add more methods: Chains and XY(Z) wings
No jigsaw/killer/calcudoku or Greater-than/Less-than are foreseen.

Do you have a nice variant in mind? I am interested.

[enxio27]

The Generator can make all kids of symmetry.

I do prefer puzzles with symmetry, if for no other reason than aesthetics.

The Solver has still limited methods:
- box--> row/column/box/diagonal etc elimination (also pointing pairs etc) and vv
- discover naked pairs/triple/quads, and after elimination a hidden set will be naked.
- x-wing,swordfish,jellyfish but these are rare.

This is perfect for me.

No jigsaw/killer/calcudoku or Greater-than/Less-than are foreseen.

Darn! I do like jigsaw and the occasional Greater-than/Less-than.

Do you have a nice variant in mind? I am interested.

Here are some of my favorites. I especially like gattai that incorporate two or three different variants in different grids, such as you did with this Olympic Sumo.

Asterisk
Center Dot
Clover
Consecutive/Non-consecutive
Diagonal
Disjoint Groups
Even-Odd
Girandola
Greater-than/Less-than
Windoku
Jigsaw
Clueless Special
Clueless Explosion

The gattai patterns that I don't see very often:

Ninja (9-grid, diamond configuration, 1-2-3-2-1)
Taiken (21-grid, circle configuration, 2-3-4-3-4-3-2)

[1to9only]

I think that Hajime's generator and my gattai-maker are very similar, it's just that at present the outputs are different! I believe H can make all the gattais I've been putting out, just as I can modify my solver/gattai-maker to handle the irregular ? and the olympic sumo (now that I have constraints working!). Each variation requires code changes (and testing!!), and I've ended with lots of programs that each do slightly different things - I'll merge them all into a single program, but this might be easier said than done - to handle the many combinations of gattais and constraints.

[enxio27]

I think that Hajime's generator and my gattai-maker are very similar, it's just that at present the outputs are different!

And I am the happy beneficiary of them all.

I believe H can make all the gattais I've been putting out, just as I can modify my solver/gattai-maker to handle the irregular ? and the olympic sumo (now that I have constraints working!). Each variation requires code changes (and testing!!), and I've ended with lots of programs that each do slightly different things - I'll merge them all into a single program, but this might be easier said than done - to handle the many combinations of gattais and constraints.

I wish I knew how to do all that!

[Hajime]

The generator needs the topleft position of each grid. No code to change. @enxio27: you provide an empty arrangement of overlapping grids and I will make the puzzle. OK? Please limit yourself to X,A,W, centre dot and clueless (regular scattered cell or boxes) grids.