A Note on Henry Dudeney’s Pentagon-Square Dissection

Henry Dudeney gives a method for dissecting a square so that its pieces can be rearranged to form a pentagon. I found it in a copy of Dudeney’s book “Amusements in Mathematics” on Project Guetnberg here. It is puzzle #155 (“Pentagon and Square”) and I found another copy of it here: You will notice that two points are labeled ‘F’, one inside the pentagon and one inside the square. I’m embarrassed to say it took me a good fifteen […]

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My Puzzle Selling Debut!

I have to say I am very impressed with Henry Dudeney and his dissection puzzles, specifically his Triangle dissection and his Greek Cross dissection. I thought they might look cool in colored acrylic so I made a bunch and they are now available at Eureka Puzzles and LittleBits Toys. Pictures and more information are available here on my Items for Sale page.

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Great Puzzle Websites

Hola! This is my first blog entry and I thought I’d start by sharing some incredibly useful websites I’ve come across over the years. In no particular order, here they are: http://home.comcast.net/~stegmann/home.htm http://www.jaapsch.net/puzzles/ http://www.puzzlepalace.com/ http://mechanical-puzzles.blogspot.com/ http://www.constantin-jean-clau.de/ http://puzzle-obsessed.blogspot.com/ http://www.puzzle-place.com/wiki/Main_Page http://smallpuzzlecollection.blogspot.com/ http://www.puzzlemad.co.uk/ http://www.puzzlewillbeplayed.com/index.html http://apuzzlingblog.blogspot.com/ http://www.chosi.org/puzzles/index.htm http://ipp30.blogspot.com/ http://allardspuzzlingtimes.blogspot.com/ http://puzzlerookie.blogspot.com/ http://superpuzzles.blogspot.com/ http://www.cs.brandeis.edu/~storer/JimPuzzles/index.html http://puzzlemuseum.com/index.htm http://www.puzzlewood.de/gallery/index.php http://www.squaring.net/index.html http://puzzling-parts.thejuggler.net/ Some of the puzzles shown on these websites are absolutely brilliant.

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