(;GM[1]FF[4]SZ[19]
GN[Solution by Fujisawa]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem9/Solution]AP[GoWiki:2009]
DT[2023-01-30]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem9/Solution

Solution by Fujisawa]
PL[W]

AB[lc][mc][pd][qd][me][oe][qe][of][rf][qg][mh][ni][pi][pj]
AW[od][ne][pe][pf][qf][ng][og][qj]

;W[nf]C[W1]MN[1]
;B[lf]C[B2]MN[2]
;W[re]C[W3]MN[3]
;B[rg]C[B4]MN[4]
;W[oc]C[W5]MN[5]
;B[pb]C[B6]MN[6]
;W[pc]C[W7]MN[7]
;B[qc]C[B8]MN[8]
;W[qb]C[W9]MN[9]
;B[rb]C[B10]MN[10]

;
)
