(;GM[1]FF[4]SZ[19]
GN[[3\] +180° (= mirrored [#1\])]
PC[http://senseis.xmp.net/?ConstructionProblem4/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ConstructionProblem4/Solution

[3\] +180° (= mirrored [#1\])]
PL[B]

AB[ii][jj]
AW[ij]


;
)
