(;GM[1]FF[4]SZ[19]
GN[Black to play and live in ko]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem5]AP[GoWiki:2009]
DT[2023-01-31]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem5

Black to play and live in ko]
PL[B]

AB[jb][kc][mc][kd][ke][me][oe][pe][qe][kf][mf][of][kg][lg][og][mh][nh]
AW[lb][gc][ic][lc][pc][ld][nd][od][qd][ie][je][le][ne][lf][nf][pf][qf][ig][mg][jh][oh][ph][qh][ni][kj]


;
)
