(;GM[1]FF[4]SZ[19]
GN[White has a choice]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem68/Solution]AP[GoWiki:2009]
DT[2023-01-22]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem68/Solution

White has a choice]
PL[B]

AB[cb][ib][cc][hc][dd][hd][de][ge][he]
AW[jb][dc][gc][jc][ed][gd][je][ff][hf][if][eg]
LB[ec:a]

;B[gb]C[B1]MN[1]
;W[fb]C[W2]MN[2]
;B[fe]C[B3]MN[3]
;W[ee]C[W4]MN[4]
;B[eb]C[B5]MN[5]
;W[ga]C[W6]MN[6]
;B[fd]C[B7]MN[7]

;LB[ec:a]
)
