(;GM[1]FF[4]SZ[19]
GN[Black connects]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem64/Solution]AP[GoWiki:2009]
DT[2023-01-25]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem64/Solution

Black connects]
PL[B]

AB[db][ec][fc][jc][jd][fe][je]
AW[cb][cc][dc][hc][id][de][hf][eg][gg]
LB[gc:a][ic:b]

;B[hd]C[B1]MN[1]
;W[gd]C[W2]MN[2]
;B[hb]C[B3]MN[3]

;LB[gc:a][ic:b]
)
