(;GM[1]FF[4]SZ[19]
GN[White to play]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem74/Solution]AP[GoWiki:2009]
DT[2023-02-01]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem74/Solution

White to play]
PL[W]

AB[kb][kc][oc][id][jd][ld][md][nd][je][qe][re][hf][if][pf][jg][kg][lg][ng][og][pg][mh][mi]
AW[gb][ib][lb][nb][pb][rb][hc][jc][lc][nc][pc][kd][qd][rd][ge][he][ie][ke][le][me][ne][pe][ff][jf][kf][lf][mf][nf][of][qf][ig][mg][rg][gh][ih][lh][nh][rh][ji][ki][ni][pi][nj][qj][lk]

;W[oe]C[W1]MN[1]
;B[pd]C[B2]MN[2]
;W[od]C[W3]MN[3]

;
)
