(;GM[1]FF[4]SZ[19]
GN[ko 1]
PC[https://senseis.xmp.net/?GokyoShumyoSection3Problem30/Solution]AP[GoWiki:2009]
DT[2023-01-21]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection3Problem30/Solution

ko 1]
PL[W]

AB[db][hb][cc][gc][hc][ic][cd][fd][gd][de][ee][fe]
AW[bb][cb][ib][jb][bc][jc][bd][hd][jd][ce][ge][he][cf][df][ef][ff][jf]

;W[fb]C[W1]MN[1]
;B[dc]C[B2]MN[2]
;W[da]C[W3]MN[3]
;B[ea]C[B4]MN[4]
;W[eb]C[W5]MN[5]
;B[ca]C[B6]MN[6]
;W[ha]C[W7]MN[7]
;B[ga]C[B8]MN[8]
;W[fa]C[W9]MN[9]

;
)
