Math of Sudoku: Sources

Sudoku Conquest — “A brief history of Sudoku.”

https://www.sudokuconquest.com/blog/a-brief-history-of-sudoku

Conceptis Puzzles — “Sudoku techniques.”

https://www.conceptispuzzles.com/index.aspx?uri=puzzle%2Fsudoku%2Ftechniques

Weisstein, Eric W. — “Latin Square.” MathWorld — A Wolfram Resource.

https://mathworld.wolfram.com/LatinSquare.html

Dukes, P. J. & Nimegeers, K. I. — Centre-Mersenne (2024).

https://alco.centre-mersenne.org/item/10.5802/alco.3.pdf

Pierce, R. — “Combinations and permutations.” Math is Fun.

https://www.mathsisfun.com/combinatorics/combinations-permutations.html

Encyclopaedia Britannica — “Combinatorics: counting, probability, & algorithms.”

https://www.britannica.com/science/combinatorics

Puzzle Genius — “Sudoku From Scratch: Part One.”

https://puzzlegenius.org/sudoku-from-scratch-part-one/

Bailey, R. A. & Cameron, P. J. — QMUL preprint on Sudoku/design theory.

https://webspace.maths.qmul.ac.uk/l.h.soicher/designtheory.org/library/preprints/sudoku.pdf