I just posted the first puzzle of the new year. It’s a “Happy 2020” Sudoku with just a few small twists like repeated characters, size based clues, and a distinction between letters and numbers. Specifically arrows point from numbers to lower numbers, and letters to letters appearing earlier in the alphabet. There are no arrows between repeated characters or between characters of different types (numbers and letters.)
The picture here shows a sample cage designed to hint at the rules, but the full puzzle with instructions, solution, PDF and PNG versions, and more information can be found here at Quadrata: https://quadratablog.blogspot.com/2020/ ... udoku.html
Happy 2020 everyone!