(;GM[1]FF[4]SZ[9]
GN[]
PC[http://senseis.xmp.net/?TheArtOf9x9Go/yokoyama111]AP[GoWiki:2009]
DT[2016-10-21]
C[Diagram from http://senseis.xmp.net/?TheArtOf9x9Go/yokoyama111

]
PL[W]

AB[cb][fb][fc][hc][ee][cf][df][ff][cg][fg][gg]
AW[eb][gb][gc][hd][dg][eg][hg][fh][gh][hh]
LB[bd:a]

;W[fd]C[W22]MN[22]
;B[ec]C[B23]MN[23]
;W[ed]C[W24]MN[24]
;B[dc]C[B25]MN[25]
;W[dd]C[W26]MN[26]
;B[ef]C[B27]MN[27]

;LB[bd:a]
)
