The Sudoku solver visualization in Elm is done!
https://tarokuriyama.com/projects/sudoku.php
Writing Elm feels similar to writing Haskell, with a bit of syntax that's more like F# (e.g. the pipeline operators <| and |>). Between the familiar format of Learn You and Elm and the examples in Beginning Elm, it's relatively easy to pick up given a bit of functional programming background.
All of the code for the solver and visualization is on GitHub.