We've decided to continue MHL's mid-month sudoku series into 2021. Enjoy the new puzzle below, and look for another puzzle to be posted on the 15th of each month.
While sudoku involves numbers, it's a game not of math but of logic--similar, in that way, to chess, which has been getting a lot of press lately due to the hit TV series The Queen's Gambit. Did you know that show is based on a book? You can request a copy of the print edition, or you can borrow it with no waitlist as an e-book Hoopla (or as an e-audiobook).
You can learn a little about the history of sudoku from Encyclopaedia Brittanica here, or get an overview from a logic- and math-based perspective here (plus, it includes some solving tips near the end). Happy puzzling!