The following introductory video, which contains a sample problem and solution, explains how KenKen puzzles work.
Rules of KenKen
Use the numbers 1 to n to fill an n × n grid — for instance, use the numbers 1, 2, 3 and 4 to fill a 4 × 4 grid — according to the following rules:
- Every row and column must contain each number exactly once.
- The numbers in each heavily outlined set of squares, called a cage, must combine (in any order) to produce the target number using the mathematical operation indicated.
- A number may be repeated within a cage, as long as it is not in the same row or column.
The solution to the puzzle will be unique.
Puzzles on This Page
This page is updated with four new puzzles daily. Each puzzle has different characteristics.
| |  | A 4 × 4 grid, using only addition. |
| |  | A 4 × 4 grid, using only addition and subtraction. |
| |  | A 4 × 4 grid, using addition, subtraction, multiplication and division. |
| |  | A 6 × 6 grid, using addition, subtraction, multiplication and division |
Select one of these types under "Today's Puzzles." Solutions to the previous day's puzzles appear under "Yesterday's Solutions."