(;GM[1]FF[4]SZ[9]
GN[Collapsed ladder]
PC[http://senseis.xmp.net/?TheArtOf9x9Go/chie717]AP[GoWiki:2009]
DT[2016-10-15]
C[Diagram from http://senseis.xmp.net/?TheArtOf9x9Go/chie717

Collapsed ladder]
PL[B]

AB[bc][dc][ec][cd][be][ce][ee][fe][ef][cg][dg]
AW[bd][dd][de][ge][bf][cf][df][ff][gf][bg][eg]
CR[ee][fe][ef]
SQ[dc][ec]

;B[eh]C[B23]MN[23]
;W[fg]C[W24]MN[24]
;B[bh]C[B25]MN[25]
;W[ed]C[W26]MN[26]

;CR[ee][fe][ef]
SQ[dc][ec]
)
