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04 March 2009 @ 08:57 am
KenKen for 3/4/09 - The Great Divide  
Aside from one of the initial KenKen releases in the London Times (#18 I believe, which had a long outer border 44+ in ~14 cells), the next largest region I've ever seen in a KenKen is a 5 (one time) and then some 4's in some tough ones but mostly just 3 and 2 and 1. This may come from the fact the first 2 books were hand-written and then the rest were computer-generated with a not yet interesting puzzle generator that doesn't like taking things to a different level (or at least is scared of pentominoes).

I find a lot of the potential logical interest in KenKen would come from exploring larger shapes that interact with others in different ways. A commenter suggested no operations made a harder puzzle. Well, in this grid, there is one large operation but it is certainly not what's going on there in a now record 16 cell region.

This is a Wednesday, 6x6 Mediumer puzzle (if Easy and Hard aren't acceptable descriptions for KenKen elsewhere, then Medium isn't an acceptable description for me here).

Rules: Same as normal KenKen, fill one to six in each row/column so each digit is used exactly once. The numbers in the upper-left of each bolded region indicate the value for some operation (+,-,*,/) applied within each cell of that region but the identity of the operation is left as an exercise for the reader.
motrismotris on March 4th, 2009 11:17 pm (UTC)
You don't. This is why I had the wrong value there initially. Take away that big number and let me mark it like this: "its odd and its a multiplication region". The value is immaterial.

My solution involved identifying lots of obviously even cells to figure out the forced identities of the two non-divide corners (the only odds not in the great divide). I don't like factorization problems at all. Thanks for pointing out the alternate meaning to the title though. That explains why no one else commented I had the / as a \ when I first posted it. I'd not concerned that possibility, but then I just wanted to write a themed puzzle where odds and evens were identifiable quickly and then you got down to business.