Simple, easy Sudoku puzzles.
On the trail of a simple Sudoku puzzle maker.

I want simple Sudoku puzzles, the maker can be complex.
Nerd-sniped by binary in Prolog.
Most of successor
Spelling out successor.
Tarau Numbers.
More cosmetic blanks.
Spaces after commas.
Renaming for clarity.
Bits of cleanup and declarative-ity.
Some *_itc/n relations to form an API of sorts.
Declarative id...
More declarative...
Towards declarative ...