(;GM[1]FF[4]SZ[19]
GN[probably correct as well, but less stable (more ko threats etc.)]
PC[http://senseis.xmp.net/?EndgameTesuji13]AP[GoWiki:2009]
DT[2010-03-05]
C[Diagram from http://senseis.xmp.net/?EndgameTesuji13

probably correct as well, but less stable (more ko threats etc.)]
PL[W]

AB[gb][gc][ed][fd][gd][de]
AW[ec][fc][bd][cd][dd][cf][cg]

;W[ea]C[W1]MN[1]

;
)
