(;GM[1]FF[4]SZ[19]
GN[Black connects underneath]
PC[https://senseis.xmp.net/?GokyoShumyoSection6Problem53/Solution]AP[GoWiki:2009]
DT[2023-01-23]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection6Problem53/Solution

Black connects underneath]
PL[B]

AB[ac][bc][cc][dc][ec][fc][he][ff][gf][eg][ch][dh][fh][cj]
AW[fa][bb][cb][gb][gc][cd][ed][fd][hd][fe][df][bg][dg]

;B[be]C[B1]MN[1]
;W[ce]C[W2]MN[2]
;B[cg]C[B3]MN[3]
;W[bd]C[W4]MN[4]
;B[dd]C[B5]MN[5]
;W[de]C[W6]MN[6]
;B[ae]C[B7]MN[7]
;W[bf]C[W8]MN[8]
;B[ee]C[B9]MN[9]

;
)
