Mathdoku

George Yeung

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About this game

Mathdoku (known as KenKen, Calcudoku) is an arithmetic puzzle that combines elements of sudoku and math.

The rules of Mathdoku are complex. If you are new to this puzzle, you are suggested to read the wiki https://en.wikipedia.org/wiki/KenKen for details.


We have different levels of KenKen for you to play.
We have:
★An unlimited number of KenKen.
★Different level of KenKen
★Easy KenKen puzzle
★Normal KenKen puzzle
★Hard KenKen puzzle (very difficult KenKen)
★Extremely Hard KenKen (very difficult KenKen)
★A daily new extremely hard challenging KenKen (Daily KenKen)

This is the ultimate KenKen game for android. Play KenKen now!

As in Sudoku, the goal of each puzzle is to fill a grid with digits so that no digit appears more than once in any row or any column (a Latin square). Grids size is 9×9. Additionally, KenKen grids are divided into heavily outlined groups of cells –– often called “cages” –– and the numbers in the cells of each cage must produce a certain “target” number when combined using a specified mathematical operation (either addition, subtraction, multiplication or division). For example, a linear three-cell cage specifying addition and a target number of 6 in a 4×4 puzzle must be satisfied with the digits 1, 2, and 3. Digits may be repeated within a cage, as long as they are not in the same row or column. No operation is relevant for a single-cell cage: placing the "target" in the cell is the only possibility (thus being a "free space"). The target number and operation appear in the upper left-hand corner of the cage.

The objective is to fill the grid in with the digits 1 through 9 such that:

Each row contains exactly one of each digit
Each column contains exactly one of each digit
Each bold-outlined group of cells is a cage containing digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (−), multiplication (×), and division (÷).

Some of the techniques from Sudoku and Killer Sudoku can be used here, but much of the process involves the listing of all the possible options and eliminating the options one by one as other information requires.

Ratings and reviews

I really like it. Everything works well however I do have one suggestion. That is to make it impossible to reset your time on the daily challenge. Resetting the challenge so all squares are cleared is fine though. Just thought that it'd make the leaderboard feature more fun, because otherwise you can just memorize the level and restart it, hence getting a good time. I just think it would make it more fair.

I love this game. For those that don't understand how to play. It's the same premise as sudoku 1-9 in columns and rows, but at the top left hand side of each group of boxes is a total and a mathematical symbol so for example if it says 24 x then the numbers within the boxes must multiply together to equal 24. If it says 21 + they have to add together to equal 21. It's fairly easy once you get started.

Enjoyed the game but my old eyes had such a hard time reading the tiny numbers and especially the operations. Would be nice if there was a way to zoom in on the boxes with the clues in them.