At MathDoku you can play this highly addicting logic and math puzzle game. It is available in both online and printable formats for free. Are you up for the challenge?

The games at MathDoku are is loosely similar to killer sudoku and based on the same rules of KENKEN™, an educational puzzle invented by Tetsuya Miyamoto in Japan. MathDoku games go by a number of names including KenKen™, KenDoKu™, kenduko, cancan, square wisdom, minuplu, calcudoku, and/or latincalc. It is also slightly similar to a crossword or jigsaw puzzle since it requires trial and error to solve.

The games at MathDoku are available in 3 formats, a 4x4, 6x6, 8x8 and difficulties ranging between easy, medium, hard, and no-op.

There are also iGoogle Gadgets available to add to any website including your Google homepage. For more information and directions how, visit wikiHow. Then, go to Google's directory or click below to add games to your homepage:
                4x4 original                 4x4 no-operations
                6x6 original                 6x6 no-operations


Mar 7 09 - for all the people printing hardcopies, there's now an answers section at, cheers

Mar 1 09 - upgraded the layout to v2, hopefully it loads faster and is a little more intuitive and user friendly, enjoy

Feb 28 09 - just moved here from, sorry about the inconvenience


MathDoku is an unofficial web site and is not associated with Nextoy or the KenKen™ brand in any way.

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