(;GM[1]FF[4]SZ[19]
GN[Main line (2)]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem53/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem53/Solution

Main line (2)]
PL[B]

AB[bj][bl][cl][dl][em][en][fo][fp][cq][dq][fq][br][dr][er][cs]
AW[bm][cm][dm][bo][cp][dp][ep][bq][eq][ar]
LB[dn:a]

;B[ap]C[B9]MN[9]
;W[aq]C[W10]MN[10]
;B[am]C[B11]MN[11]
;W[an]C[W12]MN[12]
;B[do]C[B13]MN[13]
;W[co]C[W14]MN[14]
;B[cn]C[B15]MN[15]

;LB[dn:a]
)
