Counting, Symmetries and Equivalence Classes of Sudoku Grids — mentioned by gilleain

Tue, 15 Sep 2026 12:13:50 GMT

There is a way of understanding all this through group theory. eg: https://arxiv.org/html/2607.20669 'Counting, Symmetries and Equivalence Classes of Sudoku Grids' where an 'equivalence class' is a set of structures (such as filled Sudoku grids) that are all equivalent under some relation.

Paper and discussion history. A mention is not an endorsement.

Counting, Symmetries and Equivalence Classes of Sudoku Grids · HackerPapers discussions

Counting, Symmetries and Equivalence Classes of Sudoku Grids — mentioned by gilleain