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

case B: ko]
PL[B]

AB[da][fa][eb][dc][fc][gc][jc][kc][fd][ee][fe][he][ie][fg]
AW[ga][cb][db][fb][gb][ib][cc][hc][cd][ed][hd][de][df][ff][eg]
LB[ca:b][gd:a][ge:a]

;B[ec]C[B1]MN[1]

;LB[ca:b][gd:a][ge:a]
)
