(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem48/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem48/Solution

Main line]
PL[B]

AB[eo][fo][gp][cq][dq][eq][fq][gq][cr][hr]
AW[dn][en][gn][co][ho][cp][bq][hq][iq][br][dr][gr][ir][cs]

;B[fs]C[B1]MN[1]
;W[hs]C[W2]MN[2]
;B[ds]C[B3]MN[3]
;W[es]C[W4]MN[4]
;B[er]C[B5]MN[5]

;
)
