KenKen

KenKen

KenKen is a Japanese numerical puzzle game created in 2004 by Tetsuya Miyamoto. Similar to Sudoku, but with the added challenge of boxed equations.

The game is played on a grid with sizes ranging from 3x3 to 9x9. Each grid is divided into "cages," which are groups of cells. Each cage has a distinct math operation (addition, subtraction, multiplication, or division) and a target number to which the cage's numbers must add up, subtract from, multiply, or divide in order to obtain the target number.

The goal of the game is to fill in the entire grid with numbers while ensuring that no number appears more than once in any row or column. Players in a 3x3 puzzle use the numbers 1-3. They use the numbers 1-4, and so on, in a 4x4 puzzle.

Players use logic and deduction to fill in the cages with the correct numbers that satisfy the math equation and target number to solve the puzzle. It's worth noting that cages can hold more than two cells, implying that the equation must be satisfied across multiple cells.

KenKen puzzles range in difficulty from easy to extremely difficult, and players can use a variety of strategies to solve them. Some of these strategies include looking for cages with only one possible solution, looking for cages with few options, and keeping track of potential solutions with "pencil marks."

Overall, KenKen is a fun and challenging game that can help you improve your math, logical reasoning, and critical thinking skills.

Features:

USA Today offers free daily KenKen puzzles.
Grid sizes ranging from 3x3 to 9x9 are available.
Various difficulty levels, ranging from easy to difficult.
Cages with various math operations and target numbers (addition, subtraction, multiplication, and division).
A timer keeps track of how long it takes to finish a puzzle.

Moves can be undone or redone.

Rules:

Fill in the grid with numbers, being careful not to repeat any numbers in any row or column.
Each cage has a distinct math operation (addition, subtraction, multiplication, or division) and a target number to which the cage's numbers must add up to, subtract from, multiply, or divide in order to obtain the target number.
The numbers in a cage must be unique within that cage, but they do not have to be in the same row or column.
Use the numbers 1-3 in a 3x3 puzzle. Use the numbers 1-4, and so on, in a 4x4 puzzle.

KenKen Playing Instructions

To select a cell, click on it.
Click on a number to insert it into the desired cell. To delete a number, select it and then click the eraser icon or press the delete key.
To add a note or pencil mark, first, click on the cell, then on the note icon, or press the space bar.
Use the arrow keys or the tab key to move between cells.
Use the undo and redo buttons or the keyboard shortcuts Ctrl + Z and Ctrl + Y, to undo or redo moves.

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