(;GM[1]FF[4]SZ[19]
GN[Failure (ii) at 1]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem52/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem52/Solution

Failure (ii) at 1]
PL[B]

AB[dm][en][co][do][bp][cq]
AW[cl][dl][el][fm][bn][fn][bo][dq][fq][dr]
LB[cn:a][ap:b]

;B[cm]C[B1]MN[1]
;W[bm]C[W2]MN[2]
;B[fo]C[B3]MN[3]
;W[go]C[W4]MN[4]
;B[bs]C[B5]MN[5]
;W[ar]C[W6]MN[6]

;LB[cn:a][ap:b]
)
