(;GM[1]FF[4]SZ[9]
GN[Complicated invasion]
PC[http://senseis.xmp.net/?OptimalPlay]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OptimalPlay

Complicated invasion]
PL[B]

AB[db][dc][dd][ce][ee][ef][eg][eh]
AW[eb][ec][ed][gd][fe][ff][fg][fh]

;B[ea]C[B1]MN[1]
;W[ei]C[W2]MN[2]
;B[fb]C[B3]MN[3]
;W[dh]C[W4]MN[4]
;B[gc]C[B5]MN[5]
;W[fd]C[W6]MN[6]
;B[cg]C[B7]MN[7]

;
)
