(;GM[1]FF[4]SZ[19]
GN[White to play]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem101]AP[GoWiki:2009]
DT[2023-02-02]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem101

White to play]
PL[B]

AB[ob][lc][nc][qc][md][qd][le][qe][mf][of][qf][rf][mg][qh][rh]
AW[pb][qb][pc][nd][pd][ne][pf][qg][rg]


;
)
