(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem49/Solution]AP[GoWiki:2009]
DT[2010-04-18]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem49/Solution

Main line]
PL[B]

AB[lb][mb][qb][mc][oc][qc][pd]
AW[kb][rb][kc][lc][rc][md][nd][qd][qe][of][qg]
LB[nb:a][od:b]

;B[qa]C[B1]MN[1]
;W[la]C[W2]MN[2]
;B[oa]C[B3]MN[3]
;W[ma]C[W4]MN[4]
;B[pb]C[B5]MN[5]

;LB[nb:a][od:b]
)
