(;GM[1]FF[4]SZ[19]
GN[Black to play and connect underneath. The solution may involve a ko.]
PC[http://senseis.xmp.net/?GokyoShumyoSection6Problem47]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection6Problem47

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

AB[ha][db][ib][dc][hc][jc][dd][hd][de]
AW[cb][fb][gb][hb][bc][fd][ce][ge][df][ef]


;
)
