## layered sudoku

Advanced methods and approaches for solving Sudoku puzzles

### layered sudoku

I am looking for a way to place 2 Sudoku puzzles on top of each other and never duplicating numbers. how might I figure this out?

Posts: 1
Joined: 14 August 2017

### Re: layered sudoku

Well one obvious way is to take the first puzzle and create the second puzzle by applying any isomorphism on the digits of the first puzzle, such that no digit is transformed into itself. eg

1 2 3 4 5 6 7 8 9 could be replaced by
9 1 2 3 4 5 6 7 8

Is this what you are looking for ? Leren

<edit>

I just thought of another way of achieving what I think you want. Instead of a number morph you can swap the rows and columns around.

For example, In the top tier of boxes you can rearrange Rows 1, 2 & 3 in the order 2 1 3, 2 3 1 or 3 1 2. Do a similar thing for Rows 4-6 and 6-9 and you're golden.

You can also do a similar thing with the columns and a similar thing with the tiers and stacks of boxes.

Leren
Leren

Posts: 3315
Joined: 03 June 2012

### Re: layered sudoku

Here is a SudoKai file that I believe does what you desire.
Attachments
Sudoku_Layers.zip
SudoKai

Posts: 30
Joined: 07 June 2014
Location: South-Africa

### Re: layered sudoku

mgladu wrote:I am looking for a way to place 2 Sudoku puzzles on top of each other and never duplicating numbers. how might I figure this out?

What do you mean with "never duplicating numbers" ? In the columns ??

@SudoKai: Can't read your file in linux, can you post it in another format ?
eleven

Posts: 1873
Joined: 10 February 2008

### Re: layered sudoku

eleven wrote:Can't read your file in linux, can you post it in another format ?

Maybe one day I will release a Linux distribution, but for now SudoKai v4.x is only available for the Windows operating system. http://www.sudokai.com
SudoKai

Posts: 30
Joined: 07 June 2014
Location: South-Africa