(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem243/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem243/Solution

Main line]
PL[B]

AB[cg][ci][ak][ck][dk][el][fm][cn][do][fo][bp][cp][dp][cq][fq][er]
AW[cl][dm][dn][bo][co][ap][bq][ar][br][cr][dr]
CR[cg]
LB[aj:a][bn:b]

;W[bl]C[W2]MN[2]
;B[al]C[B3]MN[3]
;W[bk]C[W4]MN[4]
;B[bj]C[B5]MN[5]
;W[am]C[W6]MN[6]
;B[an]C[B7]MN[7]

;CR[cg]
LB[aj:a][bn:b]
)
