(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem35/Solution]AP[GoWiki:2009]
DT[2023-01-31]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem35/Solution

Black to play]
PL[B]

AB[ja][ma][ib][mb][qb][hc][ic][jc][mc][qc][kd][ld][od][pd][me][ne][oe][qe][og][ph][qi][ri]
AW[la][oa][qa][jb][lb][nb][ob][pb][kc][lc][nc][oc][md][nd][qd][rd][re][qg][rh]

;B[pc]C[B1]MN[1]
;W[rb]C[W2]MN[2]
;B[rc]C[B3]MN[3]
;W[sc]C[W4]MN[4]
;B[rf]C[B5]MN[5]
;W[qf]C[W6]MN[6]
;B[sf]C[B7]MN[7]
;W[pe]C[W8]MN[8]
;B[sh]C[B9]MN[9]

;
)
