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

White to play]
PL[W]

AB[da][ea][db][jb][kb][qb][ec][gc][lc][mc][nc][pc][dd][fd][hd][je][me][oe][kf][jg]
AW[fa][ga][eb][fb][gb][rb][fc][ic][jc][kc][rc][kd][ld][md][nd][qd][qf]

;W[ne]C[W1]MN[1]
;B[nf]C[B2]MN[2]
;W[mf]C[W3]MN[3]
;B[ng]C[B4]MN[4]
;W[od]C[W5]MN[5]
;B[pd]C[B6]MN[6]
;W[pe]C[W7]MN[7]
;B[of]C[B8]MN[8]
;W[lf]C[W9]MN[9]
;B[lg]C[B10]MN[10]

;
)
