(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem144/Solution]AP[GoWiki:2009]
DT[2019-02-20]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem144/Solution

Solution]
PL[B]

AB[ib][pb][rb][ec][fc][gc][ic][pc][cd][hd][id][jd][kd][ld][md][nd][pd][ge][oe][qf]
AW[ia][pa][hb][jb][ob][hc][jc][kc][lc][mc][oc][fd][gd][od][fe][he][je][ne][hf][lf][nf][og]
CR[fe]

;B[gb]C[B11]MN[11]
;W[ha]C[W12]MN[12]
;B[nc]C[B13]MN[13]
;W[nb]C[W14]MN[14]
;B[mb]C[B15]MN[15]
;W[ma]C[W16]MN[16]
;B[lb]C[B17]MN[17]
;W[la]C[W18]MN[18]
;B[ja]C[B19]MN[19]
;W[ka]C[W20]MN[20]

;CR[fe]
)
