(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem50/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem50/Solution

Main line]
PL[B]

AB[bp][cp][dp][dq][dr]
AW[bm][bo][co][do][ep][eq][ar][er][gr]

;B[ap]C[B1]MN[1]
;W[cr]C[W2]MN[2]
;B[bs]C[B3]MN[3]
;W[cs]C[W4]MN[4]
;B[br]C[B5]MN[5]
;W[bq]C[W6]MN[6]
;B[cq]C[B7]MN[7]
;W[as]C[W8]MN[8]
;B[aq]C[B9]MN[9]
;W[ds]C[W10]MN[10]

;
)
