(;GM[1]FF[4]SZ[19]
GN[Ko II variation]
PC[https://senseis.xmp.net/?GokyoShumyoSection3Problem51/Solution]AP[GoWiki:2009]
DT[2023-01-02]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection3Problem51/Solution

Ko II variation]
PL[B]

AB[ib][bc][cc][ic][ad][bd][be][ce][ee][ge][he][ef]
AW[bb][cb][hb][ac][dc][gc][cd][dd][gd]

;B[eb]C[B1]MN[1]
;W[fb]C[W2]MN[2]
;B[fa]C[B3]MN[3]
;W[ga]C[W4]MN[4]
;B[ec]C[B5]MN[5]
;W[ed]C[W6]MN[6]
;B[fc]C[B7]MN[7]
;W[fd]C[W8]MN[8]
;B[gb]C[B9]MN[9]

;
)
