(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem52/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem52/Solution

Main line]
PL[B]

AB[dm][en][co][do][bp][cq]
AW[cl][dl][el][fm][bn][fn][bo][dq][fq][dr]

;B[bm]C[B1]MN[1]
;W[cm]C[W2]MN[2]
;B[cn]C[B3]MN[3]
;W[bl]C[W4]MN[4]
;B[ao]C[B5]MN[5]
;W[am]C[W6]MN[6]
;B[bs]C[B7]MN[7]
;W[aq]C[W8]MN[8]
;B[fo]C[B9]MN[9]
;W[go]C[W10]MN[10]

;
)
