(;GM[1]FF[4]SZ[19]
GN[W1 threat to the lower side]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem131/Attempts]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem131/Attempts

W1 threat to the lower side]
PL[W]

AB[ek][bl][cl][dl][am][em][fm][gm][an][bn][cn][hn][co][fo][ho][gp][bq][fq][gq][ar][cr][er][as][cs][ds][es]
AW[bm][cm][dm][dn][en][fn][gn][bo][ap][bp][cp][dp][ep][fp][aq][dq][eq][dr][fr]

;W[cq]C[W9]MN[9]
;B[gr]C[B10]MN[10]
;W[br]C[W11]MN[11]
;B[fs]C[B12]MN[12]
;W[bs]C[W13]MN[13]

;
)
