Hey folders,
Please take a look at this very cool article on KAMIYA Satoshi's website
entitled "Challenge from David Brill":
http://folders.jp/t/brill_challenge/index.html
[http://folders.jp/t/brill_challenge/index.html]
It's from May, so maybe you already read it?
In it you'll find a very interesting mathematical puzzle, which Kamiya
solves by
the end, (spoiler alert).
I know some of you are pretty big smarty-pantses. So I'd like to see if
anyone else can solve this problem besides Kamiya
himself.
There's quite a bit of visual information in the article, but since it is
all
written in Japanese I'll spell out the puzzle for you.
David brill wants to fold two of his famous "Horse"es. They are folded from
equilateral triangles. But he can only find a silver rectangle piece of
paper at the paper shop. So how can he get the two equilateral triangles
folded and cut out of the
rectangle without putting any creases on the paper that would end up in the
middle of the triangles (no bad creases). Of course no pencils, rulers, or
straightedges are allowed (no tools, just
folding).
This problem is basically a reference point finding puzzle, but since there
are
no bad creases allowed, it's a pretty tricky one.
I didn't even bother trying the puzzle myself. I actually don't like
puzzles haha. But the solution is so elegant, it's quite pleasing just to
read about it.
I'd like to translate the article sometime... Eventually...
Anyway, good luck folders.
-Seth
