(;GM[1]FF[4]SZ[19]
GN[continued: ko]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem87/Solution]AP[GoWiki:2009]
DT[2023-02-01]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem87/Solution

continued: ko]
PL[W]

AB[pb][qb][rb][rc][pd][qd][oe][qe][se][qf][rf]
AW[ra][ob][mc][oc][pc][qc][od][rd][me][nf][of][sf][pg][rg][qh][qk]

;W[pa]C[W1]MN[1]
;B[qa]C[B2]MN[2]
;W[sb]C[W3]MN[3]

;
)
