(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?IgoHatsuyoRonProblem183/Solution]AP[GoWiki:2009]
DT[2010-06-15]
C[Diagram from http://senseis.xmp.net/?IgoHatsuyoRonProblem183/Solution

]
PL[B]

AB[ia][ja][ma][na][oa][pa][qa][ra][bb][eb][mb][ob][pb][sb][bc][dc][ec][lc][nc][pc][qc][dd][fd][gd][hd][ld][pd][rd][je][me][pe][qe][af][if][lf][nf][qf][ig][mg][ng][og][ah][ch][eh][ih][ph][qh][rh][sh][ai][ci][ei][ii][mi][ni][pi][aj][cj][ej][gj][pj][rj][gk][ik][jk][lk][pk][rk][bl][il][nl][pl][sl][jm][nm][pm][an][cn][en][hn][jn][kn][mn][nn][qn][do][fo][ho][so][ap][op][qp][lq][cr][dr][mr][or][rr][sr][gs][is][js][ms][ps]
AW[ga][la][ab][gb][hb][ib][kb][lb][qb][rb][ic][jc][kc][mc][oc][rc][sc][md][nd][od][sd][ce][ee][he][ne][oe][re][se][hf][of][pf][rf][bg][dg][fg][kg][pg][qg][rg][sg][hh][kh][oh][bi][di][hi][ki][oi][qi][ri][si][hj][kj][oj][qj][ak][hk][ok][qk][hl][jl][ol][ql][em][fm][hm][im][om][qm][rm][in][on][ao][bo][co][io][mo][no][oo][po][ep][mp][bq][gq][kq][nq][oq][pq][er][hr][kr][hs][ls]

;B[pn]C[B41]MN[41]
;W[qo]C[W42]MN[42]
;B[rn]C[B43]MN[43]
;W[ro]C[W44]MN[44]
;B[sn]C[B45]MN[45]
;W[sm]C[W46]MN[46]
;B[sp]C[B47]MN[47]
;W[rp]C[W48]MN[48]
;B[sq]C[B49]MN[49]
;W[sj]C[W50]MN[50]

;
)
