(;GM[1]FF[4]SZ[19]
GN[White to play and connect underneath - IV]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem21/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem21/Attempts

White to play and connect underneath - IV]
PL[W]

AB[fb][ec][gc][jc][de][fe][he][ie][ef][gf]
AW[db][hb][dc][hc][dd][ed][hd][ee][ge][cf]
LB[fc:a][ff:a]

;W[fa]C[W1]MN[1]
;B[gb]C[B2]MN[2]
;W[ga]C[W3]MN[3]
;B[ea]C[B4]MN[4]
;W[ha]C[W5]MN[5]
;B[eb]C[B6]MN[6]
;W[gd]C[W7]MN[7]
;B[fd]C[B8]MN[8]
;W[da]C[W9]MN[9]

;LB[fc:a][ff:a]
)
