(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem135/Solution]AP[GoWiki:2009]
DT[2023-02-03]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem135/Solution

Black to play]
PL[B]

AB[pb][od][pd][qd][ne][qe][re][lf][rf][rh][mi][qi][ri][lj][nj][pj]
AW[qb][mc][pc][qc][rc][ld][rd][je][me][oe][mg][pg][rg][sg][mh][qh][ki][oi]

;B[nd]C[B1]MN[1]
;W[nc]C[W2]MN[2]
;B[ph]C[B3]MN[3]
;W[qg]C[W4]MN[4]
;B[og]C[B5]MN[5]
;W[oh]C[W6]MN[6]
;B[nh]C[B7]MN[7]
;W[of]C[W8]MN[8]
;B[ng]C[B9]MN[9]
;W[nf]C[W10]MN[10]

;
)
