(;GM[1]FF[4]SZ[19]
GN[Usual defense doesn't work.]
PC[https://senseis.xmp.net/?posting=12526]AP[GoWiki:2009]
DT[2024-10-28]
C[Diagram from https://senseis.xmp.net/?posting=12526

Usual defense doesn't work.]
PL[B]

AB[ea][eb][dc][fc][dd][ce][de][af][bf][cg]
AW[cb][db][cc][bd][cd][be]
CR[ea][af]

;B[bb]C[B1]MN[1]
;W[ba]C[W2]MN[2]
;B[ab]C[B3]MN[3]
;W[ac]C[W4]MN[4]
;B[da]C[B5]MN[5]
;W[ae]C[W6]MN[6]
;B[ca]C[B7]MN[7]

;CR[ea][af]
)
