(;GM[1]FF[4]SZ[19]
GN[Black to play and connect underneath. The solution is a ko.]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem55]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem55

Black to play and connect underneath. The solution is a ko.]
PL[B]

AB[ca][ia][db][ib][dc][hc][dd][gd][id][de][ge][gf]
AW[cb][gb][hb][bc][ec][gc][cd][be][ee][fe][cf][eg][gg]


;
)
