suirodoku

For fans of Killer Sudoku, Samurai Sudoku and other variants

suirodoku

Postby rjamil » Wed Jan 28, 2026 3:24 pm

Has anybody know about this Sudoku variant?

How to play Suirodoku, the revolutionary puzzle that combines Sudoku with colors. Master the 4th Intrication rule where each number-color combination appears only once in the entire 9x9 grid. Interactive tutorial with Rainbow and Chromatic Circle techniques.

https://suirodoku.com/

How to Play

4th Perfect Intrication: Numbers and colors must appear once per row, column, 3×3 region and each number-color combination can only appear ONCE in the entire 9x9 grid!

This mind-bending 4th Intrication changes everything!

Rainbow Technique: Pick any number and see which colors it's already paired with across the grid.

This reveals which colors are still available for that number.

Chromatic Circle Technique: Pick any color and see which numbers it's already paired with across the grid.<br>This reveals which numbers are still available for that color.

Interactive Cell Selection: Click multiple times on the same cell to cycle through different highlight modes.

Try clicking the green 4 cell below to see both Rainbow and Chromatic patterns!

You're Ready to Play! In Suirodoku, you'll create exactly 81 unique number-color pairs, with each number and each color appearing once per row, column, and 3x3 region.

Ready to challenge your mind with this revolutionary puzzle?

R. Jamil
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Re: suirodoku

Postby Hajime » Wed Jan 28, 2026 6:39 pm

Nice concept.
When entering a wrong clue: instant error reply.
When puzzle is solved: no reaction and timer keeps on counting.

On android device.
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Re: suirodoku

Postby Hajime » Wed Jan 28, 2026 9:14 pm

One hour to solve a "master", manually of course....
Image
I think it has 2 solutions...
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Re: suirodoku

Postby blue » Thu Jan 29, 2026 12:08 am

Hajime wrote:One hour to solve a "master", manually of course....

(pic)

I think it has 2 solutions...

The red square in box 6, from line of sight eliminations, must be one of r6c89.
Since there's alredy a red 4, it must r6c9 that's red.
Then since there's already a red 2, r6c9 must be 5 (and red).

That takes care of the numbers.
The missing colors were easy too ... "singles to the end".
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Re: suirodoku

Postby denis_berthier » Thu Jan 29, 2026 4:52 am

.
It's just 3D Sudoku minus a block-type constraint in the 3rd dimension (colour, if you keep number as the value dimension).
Or 3D Latin Squares plus block constraints in the row and column dimensions.

So: not really revolutionary.
.
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Re: suirodoku

Postby Hajime » Thu Jan 29, 2026 2:59 pm

Aha, I did not read the rules fully.
Of each color there a 9 cells, some visible and some not visible.
All with 1 to 9 in them and all only 1 per row,col,box
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Re: suirodoku

Postby blue » Thu Jan 29, 2026 4:10 pm

Hi Hajime,

The puzzle above, did have a unique solution, but after trying 20 or so "master level" puzzles, it looks like about half of them really do have two solutions :(

They were "too easy" too ... :(
Fun, but not much of a challenge.

I liked the user interface :!:

Cheers,
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