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kakuro

Sudoku fans: Try these gnarly KenKen puzzles

Sudoku can get pretty tough. But if you're looking for fresh pastures, KenKen puzzles offer a new challenge.

The only problem for me: The New York Times' online KenKen site offers only 6x6 puzzles.

However, Nextoy, the company that distributes KenKen puzzles outside Japan, has spruced up its official KenKen Web site with considerably larger sizes--7x7, 8x8, and 9x9. The sites use the same Flash-based interface as The New York Times' puzzles, which NextToy supplies.

Nextoy President Robert Fuhrer said the puzzles are updated daily. For now, each is of medium difficulty, though larger puzzles are harder in general. … Read more

My latest puzzle love: KenKen

A correction was made to this story. Read below for details.

My first infatuation was with Sudoku. Then my attentions moved to Kakuro. Now, though, I have a big crush on KenKen.

No, I'm not talking about marital infidelity involving various Japanese women. I'm talking about a series of logic puzzles that have made their way from that country to U.S. newspapers, Web sites, and mobile phones.

Though Sudoku certainly hasn't reached the level of ubiquity of crossword puzzles, it is certainly widespread. The 9-by-9 grids--each of the 81 cells must be populated with the numbers … Read more