This page contains commented links to Sudoku related websites. I hope you’ll enjoy exploring these links !
History of Sudoku
On magic squares, translation of an article by Euler
https://sudokujapan.com (in japanese): I discovered this webiste when searching for information on the history of Sudoku.
Sudoku – an alternative history, a lecture by Peter J. Cameron, 2007. A very interesting lecture, in which I discovered the magic square in Albrecht Dürer’s engraving called Melencolia (dated 1514) and the German statistician W. U. Behrens.
This lecture references the following article: Sudoku, Gerechte Designs, Resolutions, Affine Space, Spreads, Reguli, and Hamming Codes, by R. A. Bailey, Peter J. Cameron, and Robert Connelly (2018)
Mathematical aspects
Difficulty Rating of Sudoku Puzzles: An Overview and Evaluation, by Radek Pelanek, 2014
There is no 16-Clue Sudoku: Solving the Sudoku Minimum Number of Clues Problem, by Gary Mc Guire et al., 2012