(;GM[1]FF[4]SZ[19]
GN[Black to play and connect underneath]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem41/Attempts]AP[GoWiki:2009]
DT[2009-07-15]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem41/Attempts

Black to play and connect underneath]
PL[B]

AB[db][hb][dc][hc][dd][gd][ce][cf][cg]
AW[gb][fc][kc][ed][jd][de][he][df][ff][dg]

;B[fb]C[B1]MN[1]
;W[gc]C[W2]MN[2]
;B[ga]C[B3]MN[3]
;W[fd]C[W4]MN[4]
;B[ec]C[B5]MN[5]
;W[hd]C[W6]MN[6]

;
)
