Mathdoku (Same as KENKEN) is an instruction-free Puzzle for training the brain.As in Sudoku, the goal of each puzzle is to fill a grid with digits –– 1 throu...A simple KenKen puzzle, with answers filled in as large numbers. KenKen and KenDoku are trademarked names for a style of arithmetic and logic puzzle invented in 2004 by Japanese math teacher Tetsuya Miyamoto, [1] who intended the puzzles to be an instruction-free method of training the brain. [2] The name derives from the Japanese …Mathdoku grids are a motivating context for learners to develop fluency with number bonds, factors and multiples, as well as providing an opportunity for learners to reason mathematically. Having experience of creating chains of reasoning provides an excellent basis on which to create proofs. Possible approachInstantly play your favourite free online games including card games, puzzles, brain games & dozens of others, brought to you by Daily Mail KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! We recommend that you install the F-Droid client and use that. Download F-Droid. Version 1.96.2 (281) suggested Added on Jun 19, 2013. This version requires Android 1.6 or newer. It is built and signed by F-Droid, and guaranteed to correspond to this source tarball . Permissions.This Mathdoku belongs to a set, which also contains 3 by 3, 4 by 4 and 6 by 6 grid sizes. If you are considering sending us solutions, we are particularly interested to hear about any elegant strategies you used when you were stuck, and you think are worth sharing. The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in Japan. MathDoku games go by a number of names including KenKen™, KenDoKu™, kenduko, cancan, square wisdom, minuplu, calcudoku, and/or latincalc. I've noticed this is mathdoku puzzles. Did you find this helpful? Yes. No. PuzzleMadness. November 20, 2023. Hi, we've fixed this problem in Mathdoku puzzles in version 38/1.38 - I think we noticed it at the same time. If you spot any more problems, please let us know either in a review or contact us directly.WELCOME TO MATHDOKU. At MathDoku you can play this highly addicting logic and math puzzle game. It is available in both online and printable formats for free. Are you up for the challenge?. The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in … MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! MathDoku. By: HHC Publications, United States. Summary. MathDoku. 100 page 7x10.5 inches quarterly magazine containing 150 SingleOp, DualOp and QuadOp CalcuDoku puzzles in very easy to hard difficulty levels. About. Media: Magazine; Released: July 2009; Frequency: 4 per year;NRICH - explore the home of rich mathematics The Rules of MathDoku are the same as KenKen puzzles: 1. Digits may appear only once in each row and column. Similar to Sudoku, digits may only appear once in each row and column. In the 4 by 4 puzzle, these are the digits 1 to 4, in the 6 by 6 MathDoku the digits 1 to 6 and in the 9 by 9 the digits up to 9. 2. Among free sudoku games online there are number puzzles which provide additional challenge. This brain-teaser combines rules of the classic sudoku game and Math puzzles. Not only you have to fill in the grid with numbers unique in their row and line, but also meet the condition of each segment separated by thick borders.How to Play MathDoku. All the same rules as standard sudoku apply, but segments are now unique to each puzzle instead of always being nonets. This spin on the game tests your arithmetic skills by adding target numbers with operators …A simple KenKen puzzle, with answers filled in as large numbers. KenKen and KenDoku are trademarked names for a style of arithmetic and logic puzzle invented in 2004 by Japanese math teacher Tetsuya Miyamoto, [1] who intended the puzzles to be an instruction-free method of training the brain. [2] The name derives from the Japanese …Mathdoku is a free puzzle game available on Android developed by Verschueren Geert. The game is categorized under Puzzle games and is a perfect combination of math and puzzles. The objective of the game is to solve math-based puzzles while keeping certain rules in mind. The math for each group should be correct, a value …KenKen Mathdoku Challenge - Play Free. KenKen, also known as Mathdoku or Calcudoku, is a math logic puzzle similar to Sudoku. This game is part of the free online brain games collection. To begin, click the Small, Medium, or Large button under the picture of the game. This opens the game in a pop-up window.MathDoku is a math puzzle similar to Sudoku. Your goal is to correctly fill the entire square field with numbers. Fields come in varying sizes: from 3×3 to 9×9. To fill a cell, select it …Slots: Hollywood Dreams. Atari & Retro, Arcade. Snake. MEMBERS ONLY. Space Adventure Pinball. Space Adventure Pinball. MEMBERS ONLY. On this page is a listing of all the online games and puzzles available for you to …Play the best free games on MSN Games: Solitaire, word games, puzzle, trivia, arcade, poker, casino, and more!MathDoku players also enjoy: See More Games. See All. Mahjongg Solitaire. Arkadium's Bubble Shooter. Mahjongg Candy. Block Champ. MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard!The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells.Dec 18, 2022 · Mathdoku is an arithmetic puzzle that combines elements of sudoku and math. How to play Mathdoku on Windows? Instruction on how to play Mathdoku on Windows 10 Windows 11 PC & Laptop. In this post, I am going to show you how to install Mathdoku on Windows PC by using Android App Player such as BlueStacks, LDPlayer, Nox, KOPlayer, .... Before you start, you will need to download the APK/XAPK installer …Play free online puzzles from Daily Mail, including sudoku, crossword, and more. Challenge your brain and have fun.For Mathdoku puzzles, you can choose which way round the numbers go. So, in the bottom left we have the clues '3 -' and '3 ÷', it doesn't matter which way round the two numbers go in the cells. (It does of course matter for the general 'Sudoku' rule that each row/column must contain each number once and only once). This is another ...Calcudoku, a popular Sudoku variant, was originally invented in 2004 by Japanese math teacher Tetsuya Miyamoto. You can play Calcudoku by Razzle Puzzles on your phone and tablet. Enjoy Calcudoku online or in offline mode! For support please contact us at [email protected] or visit RazzlePuzzles.com. The Art Of Chess: Meet Chess Master And Painter Maria Yugina. Mick. Tal vs. Akopian (Barcelona, 1992) GM. PSvidler. Chess Today. Play chess online for free on Chess.com with over 150 million members from around the world. Have fun playing with friends or challenging the computer! When you start this Mathdoku app, The Back-Key of your Samsung phone becomes inoperative.. (when you turn Mathdoku off, the back-key works again). you need the back-key in order to make calculations, like finding the factors of a large number..The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells.MathDoku players also enjoy: See More Games. See All. Mahjongg Solitaire. Arkadium's Bubble Shooter. Mahjongg Candy. Block Champ. MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! The Rules of MathDoku are the same as KenKen puzzles: 1. Digits may appear only once in each row and column. Similar to Sudoku, digits may only appear once in each row and column. In the 4 by 4 puzzle, these are the digits 1 to 4, in the 6 by 6 MathDoku the digits 1 to 6 and in the 9 by 9 the digits up to 9. 2. MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard!Newdoku is also referred to Kendoku，Kenken，Newdoku，Calcudoku，and Mathdoku. Newdoku is the most popular calculation game after the success of Sudoku. It is a … The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in Japan. MathDoku games go by a number of names including KenKen™, KenDoKu™, kenduko, cancan, square wisdom, minuplu, calcudoku, and/or latincalc. MathDoku players also enjoy: See More Games. See All. Pyramid Solitaire. Block Champ. Addiction Solitaire. Daily Word Search. MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard!MATHDOKU is a puzzle game similar to Sudoku, but with a bit altered rules. Your goals is to fill the grid with numbers, with each number only being used once per row and column. Groups of cells are outlined as segments, and numbers in the cells within a segment must coordinate with the number and operator.Mathdoku is a fun and educational math puzzle game that you will find hard to stop playing. The object of the game is to fill in all the blank grid with digits. However, each row and each column can only have one of each digit AND the numbers must match with the total and the equation for its block. See below for more detailed instructions and ...This Mathdoku belongs to a set, which also contains 3 by 3, 4 by 4 and 5 by 5 grid sizes. If you are considering sending us solutions, we are particularly interested to hear about any elegant strategies you used when you were stuck, and you think are worth sharing.About this game. Mathdoku (known as KenKen, Calcudoku) is an arithmetic puzzle that combines elements of sudoku and math. The rules of Mathdoku are …The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells.Mathdoku (also called KenKen® and Calcudoku) is a math and logic puzzle similar to Sudoku. In Simple MathDoku, in addition to being able to note candidates for each cell, you can also note combinations of candidates for each cage. By using the cage note feature, you can solve high difficulty level puzzles more easily. Mathdoku (also called ...This is how I worked out this 3x3 mathdoku: Firstly, I filled in the numbers that are already given to me, 1 and 2. Since they are in the same column, I can deduce that the bottom left corner box would be 3. Now that I know that is 3, I have to minus 1, which is 2.MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard!I've noticed this is mathdoku puzzles. Did you find this helpful? Yes. No. PuzzleMadness. November 20, 2023. Hi, we've fixed this problem in Mathdoku puzzles in version 38/1.38 - I think we noticed it at the same time. If you spot any more problems, please let us know either in a review or contact us directly.This Mathdoku belongs to a set, which also contains 3 by 3, 4 by 4 and 6 by 6 grid sizes. If you are considering sending us solutions, we are particularly interested to hear about any elegant strategies you used when you were stuck, and you think are worth sharing. How to Play MathDoku. All the same rules as standard sudoku apply, but segments are now unique to each puzzle instead of always being nonets. This spin on the game tests your arithmetic skills by adding target numbers with operators in the top left corner of each segment. Instantly play your favourite free online games including card games, puzzles, brain games & dozens of others, brought to you by Daily Mail MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! Play MathDoku online from USA TODAY. MathDoku is a fun and engaging online game. Play it and other games online at games.usatoday.com. The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells. The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in Japan. MathDoku games go by a number of names including KenKen™, KenDoKu™, kenduko, cancan, square wisdom, minuplu, calcudoku, and/or latincalc. How to play. This is an example of a completed Killer Sudoku puzzle. The grid is split up in to cages; each cage contains 2 or more cells, and has a total in the top-left corner. The cells in each cage must add up to the given total. As an example, the cage in the top-left of this puzzle contains three cells, and they must add up to 17.Need a brain challenge? MathDoku adds an extra layer of math to the classic puzzle format. Can you solve this game and get to the AARP Leaderboard? Track your best and average solve times over history with our stats tracker. Calcudoku, a popular Sudoku variant, was originally invented in 2004 by Japanese math teacher Tetsuya Miyamoto. You can play Calcudoku by Razzle Puzzles on your phone and tablet. Enjoy Calcudoku online or in offline mode! The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells. MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! Play MathDoku online from USA TODAY. MathDoku is a fun and engaging online game. Play it and other games online at games.usatoday.com. Cross math game online. Our cross math puzzles for kids are a type of educational activity that combines the principles of traditional crossword puzzles with mathematical concepts. Instead of using words, these crossword maths puzzles use mathematical equations, operations, and numerical answers to fill in the grid. MATHDOKU is a puzzle game similar to Sudoku, but with a bit altered rules. Your goals is to fill the grid with numbers, with each number only being used once per row and column. Groups of cells are outlined as segments, and numbers in the cells within a segment must coordinate with the number and operator.MathDoku is a great printable puzzle that combines arithmetic and math skills with logic reasoning. The rules are the same as those of the famous KenKen en KenDoku puzzles. Click here to go to our printable Mathdoku download page.9 by 9 MathDoku Puzzles. Fill in the numbers 1 to 9 in such that each number appears only once in each row and colum. The grid is divided in so called cages with operators and target numbers. The numbers in each cages must produce the target number by using the operator of that cage. 2÷. MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! MathDoku is a free online math puzzle game, much like Sudoku, but is more of a challenge to complete. See if you can conquer it today at Dictionary.com! Every Killer Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required. Killer Sudoku puzzles on puzzlemix appear at a wide range of sizes and difficulties. Usually they are 6x6, 8x8 or 9x9. In each respective case you must place 1-6, 1-8 or 1-9 ...Play MathDoku, a variation of Sudoku with math symbols, or try other classic and new games like solitaire, mahjong, and crossword. No download or registration required, just … The Art Of Chess: Meet Chess Master And Painter Maria Yugina. Mick. Tal vs. Akopian (Barcelona, 1992) GM. PSvidler. Chess Today. Play chess online for free on Chess.com with over 150 million members from around the world. Have fun playing with friends or challenging the computer! Among free sudoku games online there are number puzzles which provide additional challenge. This brain-teaser combines rules of the classic sudoku game and Math puzzles. Not only you have to fill in the grid with numbers unique in their row and line, but also meet the condition of each segment separated by thick borders. MathDoku, or KenKen, math puzzles for kids are great to develop math skills and math teachers gladly incorporate them in the math lessons. It takes both logic and arithmetic skills to solve them. The Rules of MathDoku are the same as KenKen puzzles: 1. Digits may appear only once in each row and columnSzkoła Podstawowa Eureka im. Hypatii z Aleksandrii — ćwiczenia z myśleniaLink do strony Mathdoku @NRICH: https://nrich.maths.org/2795Mathdoku. Age 7 to 11. Challenge Level. Problem. Getting Started. Student Solutions. Teachers' Resources. Are there any 'cages' which are single cells? The labels for these squares simply tell you the number inside the square, so that can be a good starting point.Calcudoku, a popular Sudoku variant, was originally invented in 2004 by Japanese math teacher Tetsuya Miyamoto. You can play Calcudoku by Razzle Puzzles on your phone and tablet. Enjoy Calcudoku online or in offline mode! For support please contact us at [email protected] or visit RazzlePuzzles.com.Free Calcudoku Puzzles. Here are hundreds of free Calcudoku puzzles suitable for printing. Inkies have the same rules as the famous puzzles created by Tetsuya Miyamoto. They are various called KenKen®, Calcudoku, Mathdoku, and Web Kendoku. Each Inky puzzle has only one unique solution.MathDoku Overview. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! Play MathDoku online from USA TODAY. MathDoku is a fun and engaging online game. Play it and other games online at games.usatoday.com.Mathdoku Editor Demonstration. Age 7 to 16. Mathematical Sudokus are a variation of the well-known Sudokus. For an introduction on how to create your own Mathdokus, take a look at Liz and Charlie using the Mathdoku Editor in the video below.MathDoku, or KenKen, math puzzles for kids are great to develop math skills and math teachers gladly incorporate them in the math lessons. It takes both logic and arithmetic skills to solve them. The Rules of MathDoku are the same as KenKen puzzles: 1. Digits may appear only once in each row and columnMathdoku (also called KenKen® and Calcudoku) is a math and logic puzzle similar to Sudoku. In Simple MathDoku, in addition to being able to note candidates for each cell, you can also note combinations of candidates for each cage. By using the cage note feature, you can solve high difficulty level puzzles more easily. Mathdoku (also called ...The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells.Newdoku is also referred to Kendoku，Kenken，Newdoku，Calcudoku，and Mathdoku. Newdoku is the most popular calculation game after the success of Sudoku. It is a …The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells. The Rules of MathDoku are the same as KenKen puzzles: 1. Digits may appear only once in each row and column. Similar to Sudoku, digits may only appear once in each row and column. In the 4 by 4 puzzle, these are the digits 1 to 4, in the 6 by 6 MathDoku the digits 1 to 6 and in the 9 by 9 the digits up to 9. 2. MathDoku. Es una variante de Sudoku al que se le añaden las operaciones básicas matemáticas (suma, resta, multiplicación y división). No se puede repetir ningún número en la misma fila y columna, y los segmentos marcados con trazos más gruesos han de estar ocupados por números que formen la cifra exacta mediante la operación indicada.For Mathdoku puzzles, you can choose which way round the numbers go. So, in the bottom left we have the clues '3 -' and '3 ÷', it doesn't matter which way round the two numbers go in the cells. (It does of course matter for the general 'Sudoku' rule that each row/column must contain each number once and only once). This is another ...See full list on mathdoku.com The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in Japan. MathDoku games go by a number of names including KenKen™, KenDoKu™, kenduko, cancan, square wisdom, minuplu, calcudoku, and/or latincalc. MathDoku. MathDoku is a game that will challenge and entertain even the most experienced math fanatics! With its simple but complex rules, MathDoku is a great way to sharpen up your math skills while enjoying yourself. It's an easy to learn, yet difficult to master game that requires strategy and mental gymnastics. Members Only. Don't worry though, we've provided a calculator that you can use as much as you like without any penalty to your score. About MathDoku. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! Top Categories.
For Mathdoku puzzles, you can choose which way round the numbers go. So, in the bottom left we have the clues '3 -' and '3 ÷', it doesn't matter which way round the two numbers go in the cells. (It does of course matter for the general 'Sudoku' rule that each row/column must contain each number once and only once). This is another .... Wordarchive
This is how I worked out this 3x3 mathdoku: Firstly, I filled in the numbers that are already given to me, 1 and 2. Since they are in the same column, I can deduce that the bottom left corner box would be 3. Now that I know that is 3, I have to minus 1, which is 2.Introducing Mathematical Sudokus. We are introducing a variation of the well-known Sudoku, by including mathematical constraints which challenge students to apply their knowledge of the four operations. For each grid size, there are four different puzzles, at each of three levels of difficulty, so plenty for your students to get stuck into! To ...The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells.Screenshots of Killer Sudoku. The king of sudokus, perfect for brain training! Killer Sudoku (aka Sumdoku / Mathdoku) is a Sudoku variant where cells are grouped into cages and the sums of the values in each cage are given. Once you know Killer, you will never go back to …Among free sudoku games online there are number puzzles which provide additional challenge. This brain-teaser combines rules of the classic sudoku game and Math puzzles. Not only you have to fill in the grid with numbers unique in their row and line, but also meet the condition of each segment separated by thick borders.A collection of videos used on the nrich.maths.org websiteMATHDOKU is a puzzle game similar to Sudoku, but with a bit altered rules. Your goals is to fill the grid with numbers, with each number only being used once per row and column. Groups of cells are outlined as segments, and numbers in the cells within a segment must coordinate with the number and operator.WELCOME TO MATHDOKU. At MathDoku you can play this highly addicting logic and math puzzle game. It is available in both online and printable formats for free. Are you up for the challenge?. The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in …Choose from over 150,000 puzzles. Sudoku, Nonograms, Hashi, Network, Nurikabe, Minesweeper and more!The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells.Every Killer Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required. Killer Sudoku puzzles on puzzlemix appear at a wide range of sizes and difficulties. Usually they are 6x6, 8x8 or 9x9. In each respective case you must place 1-6, 1-8 or 1-9 ...MathDoku. Es una variante de Sudoku al que se le añaden las operaciones básicas matemáticas (suma, resta, multiplicación y división). No se puede repetir ningún número en la misma fila y columna, y los segmentos marcados con trazos más gruesos han de estar ocupados por números que formen la cifra exacta mediante la operación indicada.A simple KenKen puzzle, with answers filled in as large numbers. KenKen and KenDoku are trademarked names for a style of arithmetic and logic puzzle invented in 2004 by Japanese math teacher Tetsuya Miyamoto, [1] who intended the puzzles to be an instruction-free method of training the brain. [2] The name derives from the Japanese …MathDoku is licensed under the GPL, and the source code is available for those who want to customize the game.The game was authored by Ben Buxton and Paul Dingemans, with contributions from Pimm Hogeling, Stephen Lee, Alexander Tesfamichael, and Anthony Paul.. Overall, MathDoku is a fun and challenging game that puts a … The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in Japan. MathDoku games go by a number of names including KenKen™, KenDoKu™, kenduko, cancan, square wisdom, minuplu, calcudoku, and/or latincalc. 9 by 9 MathDoku Puzzles. Fill in the numbers 1 to 9 in such that each number appears only once in each row and colum. The grid is divided in so called cages with operators and target numbers. The numbers in each cages must produce the target number by using the operator of that cage. 36×. The Rules of MathDoku are the same as KenKen puzzles: 1. Digits may appear only once in each row and column. Similar to Sudoku, digits may only appear once in each row and column. In the 4 by 4 puzzle, these are the digits 1 to 4, in the 6 by 6 MathDoku the digits 1 to 6 and in the 9 by 9 the digits up to 9. 2. This Mathdoku belongs to a set, which also contains 4 by 4, 5 by 5 and 6 by 6 grid sizes. If you are considering sending us solutions, we are particularly interested to hear about any elegant strategies you used when you were stuck, and you think are worth sharing. ...The first step with a Mathdoku puzzle is always to enter pencil marks for those cells that don't have many combinations. For example, the top-left cell with the clue '5x' is a great example. There is only way to satisfy that clue, i.e. 1x5 = 5. So we can enter 1 and 5 for the pencil marks for those two cells. Don't worry though, we've provided a calculator that you can use as much as you like without any penalty to your score. About MathDoku. KenKen players love MathDoku, the best free online version of the popular game. Test your number logic skills in games ranging from easy to hard! Top Categories. .