(;GM[1]FF[4]SZ[15:7]
GN[main line?]
PC[http://senseis.xmp.net/?RTGProblem33/Attempts]AP[GoWiki:2009]
DT[2009-11-15]
C[Diagram from http://senseis.xmp.net/?RTGProblem33/Attempts

main line?]
PL[B]

AB[dc][ec][cd][ce][fe][ge][he][bf][cf][hf]
AW[bc][cc][bd][dd][be][de][ee][af][ff][gf]
CR[cd][ce][bf][cf]

;B[fg]C[B1]MN[1]
;W[df]C[W2]MN[2]
;B[dg]C[B3]MN[3]
;W[bg]C[W4]MN[4]
;B[gg]C[B5]MN[5]
;W[ef]C[W6]MN[6]
;B[eg]C[B7]MN[7]
;W[cg]C[W8]MN[8]
;B[hg]C[B9]MN[9]

;CR[cd][ce][bf][cf]
)
