(;GM[1]FF[4]SZ[19]
GN[Black invades]
PC[http://senseis.xmp.net/?WedgeFourSpaceExtension]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?WedgeFourSpaceExtension

Black invades]
PL[W]

AB[gc][cd][pd]
AW[ic][nc]
CR[ic]
LB[kc:b][kd:a]

;B[ld]C[B4]MN[4]

;CR[ic]
LB[kc:b][kd:a]
)
