(;GM[1]FF[4]SZ[19]
GN[Black connects]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem56/Solution]AP[GoWiki:2009]
DT[2023-01-23]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem56/Solution

Black connects]
PL[B]

AB[cb][hb][cc][hc][dd][hd][de][he][ef][cg]
AW[db][ib][fc][jc][gd][ee][ge][je][gf][ig]

;B[hf]C[B1]MN[1]
;W[hg]C[W2]MN[2]
;B[fb]C[B3]MN[3]
;W[eb]C[W4]MN[4]
;B[ec]C[B5]MN[5]
;W[ed]C[W6]MN[6]
;B[fa]C[B7]MN[7]
;W[dc]C[W8]MN[8]
;B[da]C[B9]MN[9]

;
)
