(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem169/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem169/Solution

Solution]
PL[B]

AB[nb][qb][jc][nc][rc][sc][md][nd][od][qd][rd][le][oe][pe][kf][lf][pf][qf][rf][rg][cj][dj][ak][bk][fk][el][dm][em][bn][cn][co][bp][cp][dp][aq][bq][cq][br][bs]
AW[na][qa][mb][ob][rb][sb][kc][mc][oc][pc][qc][ld][pd][je][ke][me][mf][of][mg][og][pg][qg][rh][ci][qi][ej][ck][dk][ek][al][bl][cl][dl][am][bm][cm][an][dn][fn][ao][bo][do][ap][ep][fp][dq][fq][cr][er][cs]

;B[ei]C[B31]MN[31]
;W[fj]C[W32]MN[32]
;B[gj]C[B33]MN[33]
;W[fi]C[W34]MN[34]
;B[fh]C[B35]MN[35]
;W[gi]C[W36]MN[36]
;B[hi]C[B37]MN[37]
;W[gh]C[W38]MN[38]
;B[gg]C[B39]MN[39]
;W[hh]C[W40]MN[40]

;
)
