(;GM[1]FF[4]SZ[19]
GN[Simple extension]
PC[https://senseis.xmp.net/?44Point33InvasionExtension]AP[GoWiki:2009]
DT[2022-07-30]
C[Diagram from https://senseis.xmp.net/?44Point33InvasionExtension

Simple extension]
PL[B]

AB[dc][dd]
AW[cc][cd]
LB[ce:b][bf:a][cf:c]

;B[de]C[B1]MN[1]

;LB[ce:b][bf:a][cf:c]
)
