(;GM[1]FF[4]SZ[19]
GN[Black to make ko]
PC[http://senseis.xmp.net/?GokyoShumyoSection3Problem75]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection3Problem75

Black to make ko]
PL[B]

AB[cb][hb][cc][ic][bd][ed][gd][hd][be][ce][de][fe]
AW[bb][bc][dc][ec][fc][gc][cd][dd]


;
)
