su·​do·​ku | \ sü-ˈdō-kü How to pronounce sudoku (audio) \

Definition of sudoku

: a puzzle in which missing numbers are to be filled into a 9 by 9 grid of squares which are subdivided into 3 by 3 boxes so that every row, every column, and every box contains the numbers 1 through 9

Examples of sudoku in a Sentence

Recent Examples on the Web

Related question: Is sudoku easier or harder with tools instead of numbers? Click the image to enlarge. Popular Mechanics Editors, Popular Mechanics, "Tool Sudoku Puzzle Answer," 28 Mar. 2019 Choose from dozens of puzzles and games, including crossword puzzles, sudoku and more. Milwaukee Journal Sentinel, "Puzzles and Games," 15 May 2018 Manager Joe Girardi said that Bird could still get something out of this camp, even if the most challenging exercise is a sudoku puzzle. Billy Witz, New York Times, "For a Yankees Prospect, Training Camp Involves Part Healing, Part Hope," 26 Feb. 2016 When retested after the prizes were frozen, Varshavsky — who in 2006 had also come under suspicion of cheating at a chess championship — could not solve a sudoku. Mike Selinker, WIRED, "Decoder Ring: Not Your Typical Scrabble Champ," 5 Nov. 2010

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sudoku.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of sudoku

2000, in the meaning defined above

History and Etymology for sudoku

Japanese sūdoku, short for sūji wa dokushin ni kagiru "the numerals must remain single" (i.e., the digits can occur only once)

Keep scrolling for more

Learn More about sudoku

Statistics for sudoku

Last Updated

2 Apr 2019

Look-up Popularity

Time Traveler for sudoku

The first known use of sudoku was in 2000

See more words from the same year

Comments on sudoku

What made you want to look up sudoku? Please tell us where you read or heard it (including the quote, if possible).


a secret plot to overthrow a government

Get Word of the Day daily email!

Test Your Vocabulary

April 2019 Words of the Day Quiz

  • a bird amidst buds
  • Which is a synonym of propitious?
True or False

Test your knowledge - and maybe learn something along the way.


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!