(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem20/Attempts]AP[GoWiki:2009]
DT[2009-07-10]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem20/Attempts

]
PL[W]

AB[fa][cb][eb][bc][cc][dc][bd]
AW[ba][fb][gb][ec][ad][cd][dd][ed][be][cf]
LB[bb:a]

;W[da]C[W1]MN[1]
;B[ea]C[B2]MN[2]
;W[ca]C[W3]MN[3]
;B[db]C[B4]MN[4]
;W[ac]C[W5]MN[5]
;B[ab]C[B6]MN[6]
;W[ae]C[W7]MN[7]

;LB[bb:a]
)
