(;GM[1]FF[4]SZ[19]
GN[[4\] +270° (= mirrored [#2\])]
PC[http://senseis.xmp.net/?ConstructionProblem4/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ConstructionProblem4/Solution

[4\] +270° (= mirrored [#2\])]
PL[B]

AB[ji][ij]
AW[ii]


;
)
