(;GM[1]FF[4]SZ[19]
GN[Black to play and kill white unconditionally]
PC[http://senseis.xmp.net/?RTGProblem63]AP[GoWiki:2009]
DT[2014-07-08]
C[Diagram from http://senseis.xmp.net/?RTGProblem63

Black to play and kill white unconditionally]
PL[B]

AB[bb][ib][kb][bc][ic][bd][dd][id][be][de][ee][he][gf][if]
AW[hb][cc][dc][ec][hc][ed][fd][gd][hd]


;
)
