calcudoku.puzzlebaron.comCalcudoku Puzzles by Puzzle Baron

Not a member? Register now for free! Play F.A.Q. High Scores Register Online Forum Games More Puzzles Welcome to Calcudoku! Welcome to Puzzle Baron's Calcudokus! Whether you know them as Calcudoku, Mathdoku or KenKen TM , we've got thousands and thousands of unique puzzles here for you to solve. You can play for fun, or register a free account and compete against other players for the Calcudoku Hall of Fame ! How to Play Calcudoku is just like Sudoku - you must enter numbers into a grid in such a way so that no number is repeated in any row or column. But Calcudoku puzzles have an added mathematical component! Each grid is split up into smaller sections of 2 or more squares, and each of those sections has an arithmetic equation attached to it (either addition, subtraction, multiplication or division). You must complete the grid so that the numbers is each section equal the mathematical formula assigned to it. If you're new to Calcudoku puzzles, start off on an easy 4x4 puzzle and work your way up to the larger/harder ones. The same types of solving methods used in regular Sudoku puzzles will come in handy with these as well. Good luck! Start a New Puzzle » Why Register a Free Account? You'll never have to register an account to play on this site, but there are several reasons you may want to play as a registered user: IT'S FREE! :-) Monthly Competitions - registered players are automatically entered into our monthly scoring competitions, and are eligible for our Hall of Fame listings. Record solve times are also kept exclusively for registered members. Resume Puzzles - save your progress on any puzzle and return to finish it later anytime within 24 hours. Premium Upgrades - registered users are eligible for premium upgrades which remove all advertising from the site and result in a noticeably larger playing area on the puzzle solving page. If any or all of the above features sound good to you, click on the button below to register for a free account: Register for Free » Competition Timer Forum Records News New buttons on Calcudoku interface Posted by: Calvin October 3, 2019, 5:56 pm New buttons on Calcudoku interface Posted by: Calvin October 3, 2019, 10:37 am New design Posted by: admin March 3, 2019, 11:11 am New design Posted by: Harlequin March 3, 2019, 3:22 am Glitch Posted by: admin February 23, 2019, 3:49 pm Glitch Posted by: mpuzzler314 February 23, 2019, 3:37 pm Mikske set a new record of 74 seconds on puzzle #6089 January 25, 2020, 7:00 am angelwhite set a new record of 21 seconds on puzzle #24996 January 25, 2020, 6:57 am angelwhite set a new record of 20 seconds on puzzle #25098 January 25, 2020, 6:53 am Crapula set a new record of 35 seconds on puzzle #21568 January 25, 2020, 6:52 am Crapula set a new record of 22 seconds on puzzle #21037 January 25, 2020, 6:51 am Mikske set a new record of 110 seconds on puzzle #6497 January 25, 2020, 6:48 am New Book: Kids Picture Puzzles Now available on Amazon and major book stores!... February 13, 2019 -- New Site: Puzzle Baron Games Word games, solitaire, mahjongg, sudoku and more!... March 22, 2018 -- Puzzle Barons Big Book of Puzz Our newest book is now available for purchase!... April 22, 2017 -- Site Launch: Jigsaw Puzzles Our newest site - solve jigsaw puzzles online!... July 2, 2013 -- New Printable Numbergrids New Numbergrid puzzles now published daily.... June 17, 2013 -- December's Winners left Highest Score angelwhite 379304 pts. Highest Score Mounrou 366521 pts. Highest Score jnmakowiec 313685 pts. right About Puzzle Baron The Puzzle Baron family of web sites has served millions and millions of puzzle enthusiasts since its inception in 2006. From jigsaw puzzles to acrostics , logic puzzles to drop quotes , patchwords to wordtwist and even sudoku and crossword puzzles , we run the gamut in word puzzles , printable puzzles and logic games. Quick Links Solve a Puzzle High Scores Who's Online Forum Puzzle Baron Books Choose an Avatar More Puzzles More Games Privacy Policy Competitions December 2019 November 2019 October 2019 September 2019 August 2019 July 2019 June 2019 May 2019 Questions or Comments? Name: Email: What is the 4th letter in button ?...