(;GM[1]FF[4]SZ[19]
GN[White to play and connect underneath]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem51/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem51/Attempts

White to play and connect underneath]
PL[W]

AB[ha][db][hb][dc][fc][hc][jc][ed][id][de][fe][ie][ef][ff][hf][fg]
AW[ga][cb][eb][gb][cc][gc][cd][dd][fd][gd][hd][cf][df][eg][eh][fh]

;B[fb]C[B6]MN[6]
;W[da]C[W7]MN[7]
;B[ec]C[B8]MN[8]
;W[ea]C[W9]MN[9]

;
)
