meandoku

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meandoku

Postby herschko » Tue May 16, 2017 5:35 pm

There is a new (at least to me) sudoku variant in the current issue of MAA Focus. (Mathematical Association of America), Called a meandoku, the only information is the about the average of the entries in pairs adjacent cells within nonets. One is told whether this mean is greater than, less than or equal to five. The author is David Nacin of William Paterson University, New Jersey, USA.

I am addicted to greater-than-killers. However, having been doing the for years, I know how to approach those. It is always nice to have develop a new strategy.

Sorry I don't know how to download the image, or even if this is legal. I did copy it to an Excel file. (I couldn't do it unless I could save my work and go back after mistakes.) Is it kosher to post it?
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re: Meandoku

Postby Pat » Tue May 23, 2017 12:30 pm

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Re: meandoku

Postby herschko » Tue May 23, 2017 3:05 pm

Can people who are not members of the MAA access this?
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Re: meandoku

Postby HATMAN » Tue May 30, 2017 10:32 am

MeanDoku NC 2

A very pleasant puzzle - but easy to make mistakes, it took me three attempts.

To me It naturally links to Non-Consecutive so here is one:

I found the trapezoids difficult to see clearly so I have gone for colours:
Green: the average of the two adjacent cells is below five
Blue: the average of the two adjacent cells is five
Red: the average of the two adjacent cells is above five

NC horizontally and vertically adjacent cells are non-consecutive.

Image
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Re: meandoku

Postby HATMAN » Thu Jun 01, 2017 4:18 pm

I've posted a harder version of this puzzle on the assassin site with the solution:

www.rcbroughton.co.uk/sudoku/forum/viewtopic.php?p=7383#p7383

Hidden Text: Show
Note: it is easier to think of the clues as sum = 9-, sum = 10 and sum = 11+ hence to use JSudoku to solve it
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Re: meandoku

Postby HATMAN » Wed Aug 02, 2017 10:54 am

MeanDoku NC X 11

I found the trapezoids difficult to see clearly so I have gone for colours:
Green: the average of the two adjacent cells is below five
Blue: the average of the two adjacent cells is five
Red: the average of the two adjacent cells is above five

NC horizontally and vertically adjacent cells are non-consecutive.
X no repeats on the two main diagonals.

I created this one based on a pretty solution and was surprised to find that there were two solutions.
Note I've posted a few on the assassin site.

Image
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