(;GM[1]FF[4]SZ[19]
GN[correct - follow up ko]
PC[http://senseis.xmp.net/?EndgameTesuji17]AP[GoWiki:2009]
DT[2011-01-22]
C[Diagram from http://senseis.xmp.net/?EndgameTesuji17

correct - follow up ko]
PL[B]

AB[ec][gc][hc][bd][dd][fd][fe][df]
AW[db][eb][fb][bc][cc][fc][gd]

;B[ae]C[B1]MN[1]
;B[ac]C[B3]MN[3]
;W[ab]C[W4]MN[4]
;B[bb]C[B5]MN[5]

;
)
