# Sudoku Theory

From Sudoku Theory

This page is a hub for theory *about* Sudoku - properties of puzzles or solutions, enumeration of grids, etc. - rather than theory for solving Sudoku (see Solving Techniques for that), though there is of course some overlap.

## Topics

- Essentially Different Puzzles, Symmetry Groups, Canonicalization
- Number of Solutions
- Minimal Constructions (see also Snipes; not to be confused with Minimal Puzzle)
- Fractional Dimension
- SET Equivalence Theory