(;GM[1]FF[4]SZ[19]
GN[Black to play and connect underneath]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem1/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem1/Attempts

Black to play and connect underneath]
PL[B]

AB[ea][fa][fb][hb][cc][gc][dd][ed][gd][hd][de][fe][df][ff][gf][eg]
AW[da][db][eb][ib][jb][ec][fc][fd][jd][ge][he][hf][jf][gg][hg]

;W[gb]C[W6]MN[6]
;B[ga]C[B7]MN[7]
;W[ia]C[W8]MN[8]
;B[ha]C[B9]MN[9]
;W[ic]C[W10]MN[10]

;
)
