(;GM[1]FF[4]SZ[19]
GN[Black to kill]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem40]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem40

Black to kill]
PL[B]

AB[ba][fa][bb][gb][fc][hc][fd][be][bf][ff][cg][dg]
AW[ab][eb][fb][bc][dc][bd][dd][cf][df]


;
)
