GMPuzzles - 2021/08/26 - Consecutive Pairs Sudoku by Grant Fikes

This Sudoku grid is completely symmetric with even the digits rotating to be the same after a 180 degree flip. In this video, Thomas talks through the logical path to the solution.

[philbeaudoin]

First time I do one of these. I did not think of “a pair of consecutive digits means one has to be even” so it took me a while to fill in that 6!

I love discovering these new “theorems” reminds me of the days when I was studying maths. Thanks for the excellent puzzles.

[toddbiesel]

Obviously, not all dots are shown, but it's possible that all pairs of symmetrically opposite dots are shown.