Michael Harvey, features editor, The Times
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March 22, 2008
Can you KenKen?
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I don't think it's possible that things like KenKen and crosswords don't help your brain stay fit.
I've made a video about how to start solving a 9x9 KenKen in which the operation signs are not given.
You can check it out at:
http://mathmojo.com/chronicles/kenken/
Brian, Central NY, US
As a comment to Colin, Olongapo, Phillippines. I agree that the signs can be hard to see however to use letters instead would be putting people who do not speak english at a disadvantage. symbols will always be preferable where mutlicultural communities are involved
Louise Banks, Ilkley, England
So far The Times's Kenken problems have been too easy, compared e.g. to Sudoku Killers; even the simplest Sudoku Killer takes a longer time (appr. 10 mins.) than the hardest Kenken (appr. 5 mins.) You will put us off by setting tioo easy Kenkens. Grow up, Times.
Urban, Liverpool, UK
It's humiliating enough not to be able to solve KenKen, but to find the word "Easy" above it is the last straw!
Tricia Howland, Hereford, UK
Yes, i can do the KenKen, i can do the KenKen.
jasmine, Mexico,
Another option would be to use the solidus instead of the division sign. According to Wikipedia, this sign looks like a "/" but is more slanted, and is also used to denote shillings. Thus, it should be more than accessible to your paper!
Ada, New Haven, CT/USA
I have the same problem with the signs - even using a magnifier. Perhaps less problems per page so that they could be printed larger?
Chris Sims, Woburn Sands, Bucks, England
KenKen is an interesting extension to Sudoku. One minor point. As with some Sudoku, I have difficulty reading some of the operations that are printed at the top left of each "shape". In particular, I have trouble distinguishing between the 'plus' and 'division' signs. Would it be a useful idea to use lower case letters instead of the of the binary operation symbols? 'p' for addition, 'd' for division, etc.
Colin , Olongapo, Philippines