I probably won't do an article on it, but I did have a couple-years old Shogi engine in Haskell:
Implementation: https://bitbucket.org/MichaelBurge/shogi/src/f2370832b328ae1...
Tests: https://bitbucket.org/MichaelBurge/shogi/src/f2370832b328ae1...
The code & style are pretty similar between the Haskell and the C. I found the C easier to write: The C engine was written and debugged within about 3 days, while the Haskell Shogi engine has a couple weeks of commits.