(;GM[1]FF[4]SZ[19]
GN[Main Line]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem40/Solution]AP[GoWiki:2009]
DT[2023-01-24]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem40/Solution

Main Line]
PL[W]

AB[cb][fc][gc][ic][cd][ce][ge][ie][gf][if][dg][fg][eh][hh]
AW[eb][jb][ec][jc][ed][id][jd][de][fe][je][ff][jf][ig]
LB[hc:b][fd:a][he:c][gg:d]

;W[ha]C[W1]MN[1]
;B[hb]C[B2]MN[2]
;W[ib]C[W3]MN[3]
;B[gb]C[B4]MN[4]
;W[gd]C[W5]MN[5]
;B[hd]C[B6]MN[6]
;W[ga]C[W7]MN[7]
;B[fa]C[B8]MN[8]
;W[ia]C[W9]MN[9]
;B[fb]C[B10]MN[10]

;LB[hc:b][fd:a][he:c][gg:d]
)
