Challenge #200: Sudoku Solver

[Strohy]

Beginner and Intermediate solutions attached. Will have a look at advanced next but it looks really tough!

Spoiler

[T_Willins]

And that makes 200!  Beginner, Intermediate, and Advanced solutions.  I think I channeled @patrick_digan on this one.  Could have made the standard macro iterative to reduce number of tools, but runs fast and works as is.  I still prefer the "brain and pencil" method, but nice to be able to create a workflow of how my brain solves Sudoku puzzles.  

Spoiler

Iterative MacroStd MacroWorkflow

[LifebloomX]

Spoiler

Beginner and Intermediate done. I'll post the solutions for advanced when I have more time later.

[terry10]

I had fun solving the intermediate. I did have to talk myself into using strings instead of math! I will attempt the advanced later for practice writing iterative macros. - terry10

Spoiler

Spoiler

[ponraj]

Here is solution for intermediate leave. 

Spoiler

[nivi_s]

Solved Beginner level!

Spoiler

[CCarroll-]

Here's my attempt at Beginner and Intermediate

Spoiler

  

[grossal]

Beginner wasn't really a challenge and intermediate/advanced are basically the same when you try a general approach.

I solved it with a iterative macro and the approach to check rows/columns/tiles. No Python, No R involved. 

[pasccout]

Here is my beginner solution... will need to work on more of it to get to intermediate and advances

[RWvanLeeuwen]

I stuck with the Beginner solution which I solved by using the RegEx tool twice (attached workflow)

Spoiler

If I wished to completely solve the Sudoku, I would study the solution created by my colleague Fred Koenders. He described it in a blog some time ago (link in Dutch: https://infotopics.nl/blog/2018/07/20/sudoku-solver-met-alteryx/)

Best,

Roland

Infotopics - Benelux partner of the year

Empowering business through analytics. See, Understand, Act!