(;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[fb][hb][cc][gc][dd][ed][hd][de][fe][df][ff][gf][eg]
AW[eb][ib][jb][ec][fc][fd][jd][ge][he][hf][jf][gg][hg]
LB[cb:a]

;B[ea]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[fa]C[B3]MN[3]
;W[db]C[W4]MN[4]
;B[gd]C[B5]MN[5]

;LB[cb:a]
)
