(;GM[1]FF[4]SZ[9]
GN[]
PC[http://senseis.xmp.net/?TheArtOf9x9Go/ouvert]AP[GoWiki:2009]
DT[2016-10-17]
C[Diagram from http://senseis.xmp.net/?TheArtOf9x9Go/ouvert

]
PL[B]

AB[fb][gb][dc][ec][de][df][dg][ch]
AW[fc][gc][ed][fe][ef][eg][dh][eh]

;B[di]C[B17]MN[17]
;W[ei]C[W18]MN[18]
;B[hb]C[B19]MN[19]

;
)
