(;GM[1]FF[4]SZ[9]
GN[Attack at the middle]
PC[http://senseis.xmp.net/?TheArtOf9x9Go/game1]AP[GoWiki:2009]
DT[2016-09-29]
C[Diagram from http://senseis.xmp.net/?TheArtOf9x9Go/game1

Attack at the middle]
PL[B]

AB[dc][cd][gd][ce][cf][hf][fg][gg][hg][eh][hh]
AW[dd][de][ge][he][df][ff][gf][if][cg][eg][dh]
CR[dc][gd]

;B[fi]C[B23]MN[23]
;W[ec]C[W24]MN[24]

;CR[dc][gd]
)
