KenKen – a Video Introduction to the 3×3 Puzzle

Here is a four minute video that introduces the 3×3 KenKen. It can be played in HD (720p) for use in classrooms with projectors.

KenKen is a logic and mathematical puzzle which is similar to Sudoku. As a math teacher, I use KenKen to teach and reinforce logical, deductive reasoning and to help with number concepts such as prime factorization.

The most common puzzles are 4×4 and 6×6 grids. I show the 3×3 puzzle in this video simply as an intro to the structure of KenKen. The goal is to fill the grid in with the digits 1 through 3 such that:

• Each row contains exactly one of each digit
• Each column contains exactly one of each digit
• The numbers in each heavily outlined set of squares, called cages, must combine (in any order) to produce the target number in the top corner using the mathematical operation indicated.

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Related posts:

1. Video – Sum Equals Product Puzzle – Part 1
2. Video – Sum Equals Product Puzzle Part 2 – Solution
3. Video – Reverse the Math Puzzle, Part 2: Using 1, 3, and 5
4. Reverse the Math Puzzle Using 2, 3, and 4
5. KenKen Player – Now at Home on mrlsmath