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CalcuDoku: Timed Sudoku Inspired Math Puzzle Game

This is a sudoku-based number puzzle game where you must put the right number in every square to fill the entire grid. Just like the classic sudoku game, you cannot repeat the same number across a row or a column. But this has a few different rules from sudoku. It comes with various difficulty modes which change the number of squares per row. The harder the mode, the more squares you must fill out. Each group of colored boxes must also be calculated based on the assigned number and operator. This can be addition, subtraction, multiplication, or division. Supply the correct digits for all the squares before the time runs out.

  • Choose between different difficulty modes: Easy, Normal, Hard, and Expert.
  • Numbers to write are based on the number of squares per row. Ex. 3 squares per row uses 1, 2, & 3.
  • The time limit is based on the difficulty mode. Harder modes provide a few more minutes for solving.
  • A colored box group must be solved according to the number and operator assigned in the game.

Overall

Design

Difficulty

Replay

Play CalcuDoku Math Practice Sudoku-based Puzzle Game

You can play this free online timed sudoku math puzzle video game with answers by clicking in the window below.

Alternatively children and adults can play this online math number puzzle game as a web application here.

CalcuDoku Speed Math Puzzle with Answers Game Play Instructions

How to Play

Supply the correct number in all the squares within the given time. Every colored box group must be solved according to the number and operator. There is only one solution for each puzzle.

  • Starting the Game
    • Select the “START” button to enter the game. Then choose a difficulty modes you want to play:
      • Easy – Has 3 digits per row and column; Time limit: 1 minute per game
      • Normal – Has 4 digits per row and column; Time limit: 20 seconds per game
      • Hard – Has 5 digits per row and column; Time limit: 2 minutes per game
      • Expert – Has 6 digits per row and column; Time limit: 2 minutes per game
    • Below the start button is the “HOW TO PLAY” button. Select this to view the mechanics of the game.
  • Game Controls
    • Touchscreen
      • Using your finger, tap a square you want to fill with a number with.
      • On the bottom part of the screen are the numbers under the “FILL IN THE GRID” box. Tap the number you want to put in the square. Once you select a number, it automatically fills the square.
      • What if you want to change the number? Select the square again. Then, simply tap the “X” button at the bottom of the screen. Then select the correct number you want to change it with.
        • Once you’ve completely filled out each square with numbers, tap the check button. This tells you if you’ve solved the puzzle correctly. If you solved it right, it will display “CalcuDoku Completed.” If not and you still have time, try to figure out where you made a mistake.
        • Remember: There is only one right solution per game. Even if you fill out all the squares, you won’t finish the game unless all the numbers are solved correctly per colored group box.
      • Boxes will turn red if two digits are the same in a column or row. Makes sure to correct this.
      • The time left is shown at the upper left corner of the screen. If you run out of time before solving the puzzle, it’s game over.
      • Need a clue? Tap on the lightbulb icon at the bottom of the screen. This gives you the correct answer for a square.
        • Be careful using to many clues. With every clue you use, your time limit is lessened.
    • Mouse
      • Using your mouse cursor, select a square you want to fill a number with.
      • On the right side of the screen are the numbers under the “FILL IN THE GRID” box. Click your chosen number, and it automatically appears in the square.
      • If you want to change the number, select the square again. Then click the “X” button in the right side of the screen. This will remove the original number. Then, click on the right number you want, and it will appear in the square.
      • When you’ve filled out each square with numbers, tap the check button. This means you’re done with the puzzle.
        • When you click check, the game tells shows if you solved the puzzle correctly. If you solved it right, it will display “CalcuDoku Completed.” If not and you still have time, try to figure out where you made a mistake.
        • There can only be one right solution per game. Even if you fill out all the squares, you won’t finish the game unless all the numbers are correctly solved per colored group box.
      • Boxes will turn red if two digits are the same in a column or row. Makes sure to correct this.
      • The time left is shown at the upper right side of the screen. If you run out of time before solving the puzzle, it’s game over.
        • Need a clue? click on the lightbulb icon on the right side of the screen. This gives you the correct answer for a square. But be careful using to many clues. With every clue you use, your time limit is lessened.
  • In-Game Controls
    • On the top right corner of the game screen is the Settings button. This looks like an orange cog. Once you select it, it will drop down other buttons while you’re playing the game.
      • The 1st icon is the widescreen button. Select this to go on full screen view. To you go back to your original view, select it again or simply press ESC on your keyboard.
      • The 2nd icon is the audio icon. Select this to turn the game’s sound on or off.
      • The 3rd icon looks like a graduation toga hat. This is the game instructions button. Select this to view instructions on how to play the game.
      • The 4th and last icon is the exit button. When you select this, It will ask you if you want to quit the game. If you select “OK” it will take you back to the opening screen. If you select cancel, you can go back to playing the game.
    • No Pause Function
      • Selecting the exit button does not pause the game. The timer will still keep running.
  • Successfully Solving a Puzzle
    • When you complete a puzzle, the screen displays the time left when you solved it.
    • If you want to play a new game, select “CONTINUE.” This takes you back to the opening screen.
    • When you complete a puzzle, you’ll be prompted to share your score on three social platforms:
      • The first button is “f.” This allows you to share your game score on your Facebook account.
      • The second button is a white bird figure. This lets you to share your game score on your Twitter account.
      • The third button is a green phone icon. This allows you to share your game score on your WhatsApp.
  • Strategy
    • This game is a lot like the classic sudoku game but with a twist. Players must supply the correct digits for each group of colored boxes with an assigned number and operator. This is a lot harder than the traditional sudoku because even if you don’t repeat a number in a row or column, you may still end up with the wrong number in a square.
      • As a tip, it’s ideal to use the Clue button (light bulb icon) early in the game. Since using a clue reduces your time, it’s best to make the most of it while you still have more time in your clock.
      • You can set the difficulty mode. Start with Easy to help you practice how to play the game. Once you think you’ve mastered the Easy mode, try to play the Normal mode, and so on. Increasing the difficulty will help improve your math and critical thinking skills.
    • Practice takes time. So it may take several of tries before your will a game, especially if it’s a higher level.
    • The game will challenge kids and adults to do addition, subtraction, multiplication, and division while practicing their logic skills. It’s a timed game which encourages you to think fast correctly.
    • If you finish putting all the numbers in a square, it doesn’t always mean you got all the answers right. Figure out how to correct the number in the squares while you still have time.
      • The varying difficulty makes the game interesting to play over and over again. Have fun solving math puzzle while beating the clock.

Like This Game? Review Calcudoku Timed Number Puzzle Math Solving Game

CalcuDoku: Timed Sudoku Inspired Math Puzzle Game
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Overall4
Design4
Fun3.8
Originality3.8
Replayability4.2
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Calcudoku Math Operations Puzzle Game with Timer Screenshot

CalcuDoku Welcome Screen Screenshot.
CalcuDoku Game Difficulty Mode Screenshot.
CalcuDoku Game How To Play Screenshot.
CalcuDoku Game Screenshot.
CalcuDoku Game Completed Screenshot.
CalcuDoku Game Times Up Screenshot.

Mobile Friendly Cross Browser Support

This game is rendered in mobile-friendly HTML5, so it offers cross-device gameplay. You can play it on mobile devices like Apple iPhones, Google Android powered cell phones from manufactures like Samsung, tablets like the iPad or Kindle Fire, laptops, and Windows-powered desktop computers. All game files are stored locally in your web browser cache. This game works in Apple Safari, Google Chrome, Microsoft Edge, Mozilla Firefox, Opera and other modern web browsers.

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