(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem77/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem77/Solution

Main line]
PL[W]

AB[pa][kb][qb][jc][lc][pc][ld][pd][le][pe][mf][pf][qg][nh][qh][oi]
AW[lb][mb][ob][pb][mc][oc][md][od][oe][of][og][pg]

;W[qc]C[W1]MN[1]
;B[rc]C[B2]MN[2]
;W[qd]C[W3]MN[3]
;B[rd]C[B4]MN[4]
;W[rb]C[W5]MN[5]
;B[qe]C[B6]MN[6]
;W[ra]C[W7]MN[7]
;B[sb]C[B8]MN[8]
;W[me]C[W9]MN[9]
;B[nf]C[B10]MN[10]

;
)
