Home > blog > Sudoku Diabolical

## Sudoku Diabolical

KenKen is the hottest puzzle craze since Sudoku. It combines the logic of a Sudoku puzzle with arithmetic. You have to add, subtract, multiply and divide to arrive at the numbers given in KenKen puzzle.

In KenKen, like Sudoku, there is a grid of 4×4, 6×6, 8×8, or 9×9 cells. That means the grid has 16, 36, 64 or 81 cells. The puzzle can actually be even larger, but those are for really advanced solvers. In both kinds of puzzles, you must have all the digits in one row. In other words, if a row has 4 cells, like in a 16-grid puzzle, you must use the numbers 1-4 in each row, and in each column. No digit may be left out of row or column, nor may there be duplicates in a row or a column.

So far, that’s totally easy to understand. If you look at a puzzle, you can see what I mean in a second.

The diabolical cleverness of KenKen, which sets it apart from Sudoku, is that:

o some adjacent groups of cells have a thick border around them. Those groups are called “cages.” Each cage has a number printed in it, along with an operation sign.

o The cells within that cage must be filled with the digits that will amount to the number given. Let’s say the cage has two cells surrounded by a thick border, the number in it is 6, and the operation sign is multiplication (x). That tells you that you must find two numbers that multiply to 6.

You may be tempted to say, “That’s easy. The answer is 2 x 3!” But don’t jump to conclusions! The answer could just as well be 6 x 1. Furthermore, you don’t immediately know which of the two cells the 2, 3, 6 or 1 belong in. You have to find that out from looking at the other cages and narrowing down your possibilities.

It takes about two minutes to learn how to do KenKen, but it can take years to master. There’s something for all levels of solvers.

Good math teachers will look into this puzzle and learn some strategy, then introduce the puzzles to their students. There are very inexpensive books of KenKen, as well as online sites where you can download free puzzles. One of them is http://kenken.com

Once you understand how KenKen really works, you will start learning all about factoring, exponents, and mathematical logic. You won’t need a workbook, and there are no grades (if the teacher is smart). The only stress is the gentle strain on your brain, and you’ll be developing that brain with every KenKen puzzle you solve.

It’s easy to get good at KenKen with some practice. The nice thing about the practice is that you won’t be able to stop. KenKen is the most addictive puzzle around!

Imagine a student being able to hone his or her basic math skills without worksheets, flash cards, charts, rote-memorization, or quizzes. Imagine that student loving math like never before!

KenKen was invented by Tetsuya Miyamoto, a Japanese math teacher who says, “I believe that if you give children good learning materials, they will think and learn and grow on their own.” If you teach yourself, your child or your students basic math with KenKen, they will develop a lifelong love of mathematics, and you will have done them a wonderful favor.

Brian Foley is a guerrilla-math teacher and professional magician. He teaches methods of thinking and learning used by master magicians. For his free KenKen video lessons, all the way to the very advanced level, check out http://mathmojo.com/kenken

Social Sudoku iPad App Demo by DailyAppShow

1. November 29th, 2011 at 15:34 | #1

wassup admin found your blog via yahoo but it was hard to find and I see you could have more visitors because there are not so many comments yet. I have discovered website which offer to dramatically increase traffic to your website they claim they managed to get close to 1000 visitors/day using their services you could also get lot more targeted traffic from search engines as you have now. I used their services and got significantly more visitors to my site. Hope this helps đ They offer alexa backlink local seo backlink service backlinks Take care. Jay

2. December 11th, 2011 at 14:26 | #2

Earn up to \$3500/month just by taking simple surveys online!

I tried one of those online survey sites about 4 months ago that
say all you have to do is spend a couple of minutes filling out
some surveys and you will be making hundreds a day….. YEAH RIGHT, I didn’t make anything.

I joined 7 of these stupid websites and I actually tried filling
out a couple of surveys on each site and they took forever then at
the end they wanted me to buy things or I couldn’t complete the
survey.

These are complete scams so be aware!!! I couldn’t believe they
were even allowed to sell such bogus products.

Then about 2 weeks ago I was watching the news and they had some
vice presidents and marketing managers of some major multi million
dollar companies talking about a site that they personally work
with to pay consumers for their opinion, A site that actually just
wants the “average Joe’s” honest opinion on products and services
and is willing to pay big money to get them. for more information
clik here:

3. January 3rd, 2012 at 08:39 | #3

Yes, thatâs right. Weâll pay you \$25 when you sign up with us today!

We have an instant \$25 market research survey you can take as soon as you join.

Imagine companies paying you just to get your opinion about whether or not
you like their products sound too good to be true? It isnât.
Thousands of companies are hiring people right now to do just that!

There are opportunities worldwide, so it doesnât even matter what country youâre from.

When you join today, youâll have THOUSANDS of surveys at your fingertips paying anywhere from \$25-\$50.

You can take these online from home, on vacation or anywhere you have an internet connection.â

Now is a better time than ever to get started! Take advantage of the instant \$25 survey today!

Click Below To Get Started Now:

Looking forward to working with you.

Regards,

4. February 5th, 2012 at 02:52 | #4

aloha admin found your website via Google but it was hard to find and I see you could have more visitors because there are not so many comments yet. I have found site which offer to dramatically increase traffic to your blog they claim they managed to get close to 1000 visitors/day using their services you could also get lot more targeted traffic from search engines as you have now. I used their services and got significantly more visitors to my blog. Hope this helps đ They offer best backlinks Take care. Jason

5. February 21st, 2012 at 17:48 | #5

Get up to 100000 forum backlinks with our backlinks service & massive targeted traffic Get incredible online web traffic using superb backlink blast today. We are able post your marketing message up to 100â000 forums around the web, get thousands of backlinks and incredible targeted web traffic in shortest time. Most affordable and most powerful service for web traffic and backlinks in the world!!!! Your post will be published up to 100000 forums worldwide your website or blog will get instant traffic and massive increase in seo rankings just after few days or weeks so your site will get targeted long term traffic from search engines. Order now: backlink service

6. March 15th, 2012 at 01:13 | #6

Get up to 100000 forum backlinks with our backlinks service & massive targeted traffic Get great web traffic using amazing backlink service today. We can post your marketing message up to 100â000 forums around the web, get thousands of backlinks and incredible targeted online web traffic in shortest time. Most affordable and most powerful service for web traffic and backlinks in the world!!!! Your post will be published up to 100000 forums worldwide your website or blog will get instant traffic and massive increase in seo rankings just after few days or weeks so your site will get targeted long term traffic from search engines. Order now: backlink service

7. April 26th, 2012 at 02:50 | #7

whats up owner found your site via Google but it was hard to find and I see you could have more visitors because there are not so many comments yet. I have found website which offer to dramatically increase traffic to your website they claim they managed to get close to 1000 visitors/day using their services you could also get lot more targeted traffic from search engines as you have now. I used their services and got significantly more visitors to my blog. Hope this helps đ They offer most cost effective backlinks service Take care. Jason

8. May 17th, 2012 at 21:44 | #8

hello I was quite impressed with the setup you used with this weblog. I use blogs my self so congrats. definatly adding to favorites. 358644

9. May 22nd, 2012 at 10:21 | #9

Very efficiently written post. It will be useful to everyone who utilizes it, including yours truly :). Keep doing what you are doing – i will definitely read more posts.