(;GM[1]FF[4]SZ[19]
GN[The crux shape]
PC[http://senseis.xmp.net/?posting=8474]AP[GoWiki:2009]
DT[2011-05-23]
C[Diagram from http://senseis.xmp.net/?posting=8474

The crux shape]
PL[B]

AB[ii][hj][ij][jj][ik]


;
)
