(;GM[1]FF[4]SZ[19]
GN[case A: black connects]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem4/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem4/Attempts

case A: black connects]
PL[W]

AB[eb][dc][fc][gc][jc][kc][ee][fe][he][ie][fg]
AW[cb][db][gb][ib][cc][hc][cd][hd][de][df][ff][eg]

;B[fa]C[B2]MN[2]
;W[fb]C[W3]MN[3]
;B[da]C[B4]MN[4]
;W[ed]C[W5]MN[5]
;B[fd]C[B6]MN[6]
;W[ga]C[W7]MN[7]
;B[ea]C[B8]MN[8]
;W[ec]C[W9]MN[9]
;B[dd]C[B10]MN[10]

;
)
