Dudeney's dissection
References:
1. [url]http://web.mat.bham.ac.uk/C.J.Sangwin/howroundcom/jigsaw/index.html[/url]
2. [url]http://www.geogebra.org/en/upload/files/UC_MAT/MichaelSmith/haberdasherproblem.html[/url]
2. [url]http://homepage2.nifty.com/sintakenoko/Cabri/CCut06.html[/url]
