(;GM[1]FF[4]SZ[19]
GN[Variation]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem23/Solution]AP[GoWiki:2009]
DT[2023-01-31]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem23/Solution

Variation]
PL[W]

AB[da][ea][ia][ka][pa][db][jb][kb][mb][ob][qb][ec][gc][lc][mc][nc][pc][dd][fd][hd][pd][je][oe][kf][nf][of][jg][lg][ng][mh][nh]
AW[fa][ga][ma][eb][fb][gb][ib][rb][fc][ic][jc][kc][oc][rc][kd][ld][md][nd][od][qd][le][ne][pe][lf][mf][qf][mg]
CR[le][mg][mh][nh]
LB[ja:a]

;W[qc]C[W1]MN[1]
;B[pb]C[B2]MN[2]
;W[hc]C[W3]MN[3]
;B[gd]C[B4]MN[4]
;W[na]C[W5]MN[5]
;B[nb]C[B6]MN[6]
;W[la]C[W7]MN[7]
;B[hb]C[B8]MN[8]

;CR[le][mg][mh][nh]
LB[ja:a]
)
