Loading...
EasyMediumHardExpertMaster - Options
- Cells: {$ $parent.$ctrl.blankCells $}{$ 'Mistakes' | translate $}: {$ $parent.$ctrl.mistakes $}{$ 'Time' | translate $}:
Sudoku online, free
Metainformation
Created by
Daniel Brooks,
Ethan Cross
Reviewed by
Yuki Matsumoto,
Ryan Phillips
Last updated 09/30/2025
References
- Bellos, Alex. 2021. “Maki Kaji Obituary.” The Guardian (London), August 20, 2021.
- Boyer, Christian. 2006. “Supplément de l'article ‘Les ancêtres français du sudoku.’” Pour la Science (in French), May: 1–6.
- Boyer, Christian. 2007. “Sudoku’s French Ancestors.” Personal webpage (archived).
- Conceptis, Puzzles. 2013. Amazing Sudoku Variants. Puzzlewright.
- Eisenhauer, William. 2010. Sudoku-zilla. CreateSpace.
- Gotō, Yoshibumi. 2021. “Remembering Kaji Maki, the ‘Father of Sudoku’.” Nippon.com, December 14, 2021.
- Grossman, Lev. 2013. “The Answer Men.” Time (New York), March 11, 2013.
- Hayes, Brian. 2006. “Unwed Numbers.” American Scientist 94 (1): 12–15.
- Lewis, R. 2015. A Guide to Graph Colouring: Algorithms and Applications. Springer.
- Malvern, Jack. 2006. “Les Fiendish French Beat Us to Su Doku.” The Times (London), June 3, 2006.
- Pegg, Ed Jr. 2005. “Sudoku Variations.” MathGames, MAA Online, September 6, 2005.
- Payn, Ian. 2004. “Deep in Thought.” The Times (London), November 13, 2004.
- Rayner, Jay. 2005. “We Can Work It Out. Or Maybe We Can’t...” The Observer (London), December 11, 2005.
- Schaschek, Sarah. 2006. “Sudoku Champ’s Surprise Victory.” The Prague Post, March 22, 2006.
- Smith, David. 2005. “So You Thought Sudoku Came from the Land of the Rising Sun...” The Observer (London), May 15, 2005.
- Snyder, Thomas, and Wei-Hwa Huang. 2009. Mutant Sudoku. Puzzlewright Press.
- “The Rise and Rise of Sudoku.” 2006. The Independent (London), April 10, 2006.
- “Correction Attached to ‘Inside Japan’s Puzzle Palace.’” 2007. The New York Times, March 21, 2007.
- “G2, Home of the Discerning Sudoku Addict.” 2005. The Guardian (London), May 13, 2005.