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KenKen (“KENKEN”, “KenDoku”, “CalcuDoku”, “Square Wisdom”) is a mathematical and logical puzzle loosely similar to sudoku. It was invented by a Japanese mathematics teacher Tetsuya Miyamoto. The objective is to fill the grid in with the digits 1 through N (where N is the number of rows or columns in the grid) such that:
- Each row contains exactly one of each digit.
- Each column contains exactly one of each digit.
- Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (×), and division (÷).
- Unlike Killer Sudoku, digits may repeat within a block.
With some puzzles the signs of mathematical operations may be absent (all signs or part of them). This makes the solving process more complicated.
Below are a sample puzzle and its solution to help you understand the game.
Here is a link to an Easy KenKen puzzle 1
Here is a link to an Easy KenKen puzzle 1 solution
This October/November free puzzle magazine ebook in PDF contains 12 kenken style sudoku puzzles; 4 each of easy, medium and hard levels of play.
Download from the 2011 free puzzle magazine link in the main menu area,