I want to call the variant a lot of people now know as “Sandwich” by what it used to be called, including in past posts on this very blog. This is a puzzle I’d worked on a while back, for a speedsetting contest that I was too late to submit to.
In other news, the WPF Sudoku Grand Prix final results are here – https://gp.worldpuzzle.org/content/wpf-gp-sudoku-results-2021
There could be a minor change or two since the round 8 results are still “preliminary” but I’m confident that my final placement won’t change. So I’m 6th! Considering I started the year targeting a top 10 finish, I’m pretty happy with this. I had a really strong finish in the last 2 rounds.
What else.. oh ya, I just wanted to note that this is the vague schedule I’ll be going for (every alternate day). I’ll branch out on topics as I go I think.
Insert a digit from 1 to 9 into each cell so that no digit repeats in any row, column, or bold region.
Additionally, the number in a circle is the sum of the digits which are covered by its arrow. Digits may repeat along arrows.
Also, the clues outside the grid are the sum of the numbers that are between the digits 1 and 9 in that row or column.
Penpa link to solve: https://git.io/JBj0a (You can tab with surface and Sudoku, the answer check is just for correct digits)