Fill in the grid so that every ring, spoke, 3x3 box and every colored spiral contains the digits 1 through 9. There is only one solution. You can find it by logic. The sudoku has a 120° rotational symmetry

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Fill in the grid so that every ring, spoke, 3x3 box and every colored spiral contains the digits 1 through 9. There is only one solution. You can find it by logic. The sudoku has a 120° rotational symmetry

- Pyrrhon
**Posts:**240**Joined:**26 April 2006

I have not claimed that it is a new variant. It is a special case of spider sudoku as well as a special case of sudoku x, cylindrical sudoku, disjoint groups sudoku, killer sudoku ... The spiral idea was given in the spiral sudoku thread and uses an old idea in the latin square discussion about diagonals in former centuries.

Pyrrhon

Pyrrhon

- Pyrrhon
**Posts:**240**Joined:**26 April 2006

Great puzzle Pyrrhon... This one make good use of the "spider" layout...

Ages ago somebody else posted something called the "rainbow sudoku"... I believe that's the same as "spider sudoku" so this concept has been recycled and recycled... I don't think anybody could have any patent on this...

Ages ago somebody else posted something called the "rainbow sudoku"... I believe that's the same as "spider sudoku" so this concept has been recycled and recycled... I don't think anybody could have any patent on this...

- udosuk
**Posts:**2698**Joined:**17 July 2005

Pyrrhon wrote:I have not claimed that it is a new variant. It is a special case of spider sudoku as well as a special case of sudoku x, cylindrical sudoku, disjoint groups sudoku, killer sudoku ... The spiral idea was given in the spiral sudoku thread and uses an old idea in the latin square discussion about diagonals in former centuries.

udosuk wrote:Ages ago somebody else posted something called the "rainbow sudoku"... I believe that's the same as "spider sudoku" so this concept has been recycled and recycled... I don't think anybody could have any patent on this...

Actually, what I was - quite evidently feebly - trying to say was, didn't I see something like this before? Only I used the wrong words!

Luna

- lunababy_moonchild
**Posts:**659**Joined:**23 March 2005

LOL... I finally got to try this puzzle, and I have to take back my comment that it's a great puzzle...

How about this, there are two 2s in one of the inner box, and two 3s on the blue spiral...

Or, is July 14 the Fools' Day in Germany and it's all part of a hoax?

3rd conjecture: the real challenge is to identify the false clues and make the puzzle valid... Working on that right now...

How about this, there are two 2s in one of the inner box, and two 3s on the blue spiral...

Or, is July 14 the Fools' Day in Germany and it's all part of a hoax?

3rd conjecture: the real challenge is to identify the false clues and make the puzzle valid... Working on that right now...

- udosuk
**Posts:**2698**Joined:**17 July 2005

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