(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?GokyoShumyoSection4Problem43/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection4Problem43/Solution

]
PL[B]

AB[eb][fb][cc][fc][gc][jc][cd][ed][id][jd][ee][fe][ge][he]
AW[ga][db][jb][dc][ec][hc][ic][kc][lc][fd][gd][hd]
LB[ib:a]

;B[ha]C[B1]MN[1]
;W[hb]C[W2]MN[2]
;B[cb]C[B3]MN[3]
;W[ea]C[W4]MN[4]
;B[dd]C[B5]MN[5]
;W[da]C[W6]MN[6]
;B[ca]C[B7]MN[7]

;LB[ib:a]
)
