205. THE SIX SHEEP-PENS. Here is a new little puzzle with matches. It will be seen in the illustration that thirteen matches, representing a farmer's hurdles,
have been so placed that they enclose six sheep-pens all of the same size. Now, one of these hurdles was stolen, and the farmer wanted still to enclose six pens of equal size with the remaining twelve. How was he to do it? All the twelve matches must be fairly used, and there must be no duplicated matches or loose ends.

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puzzle solution, PostScript source code 

@dudeney_puzzles graphics in PS
%!PS-Adobe-2.0

% A6 paper
<< /PageSize [297 420] >> setpagedevice

/scaling 30 def

/line {
newpath
0 0 moveto
0 1 lineto
stroke
} def

/page-center {
currentpagedevice /PageSize get {
2 div
} forall
} def

page-center translate
scaling scaling scale
1 scaling div setlinewidth
6 {
60 rotate
line
} repeat

6 {
0 1 translate
2 60 mul rotate
line
-2 60 mul rotate
0 -1 translate
60 rotate
} repeat

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brutaldon 0 1 1
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Merveilles

Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information 鈥 A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.