(;GM[1]FF[4]SZ[19]
GN[The incorrect W1 only results in ko]
PC[http://senseis.xmp.net/?EndgameTesuji16]AP[GoWiki:2009]
DT[2011-04-12]
C[Diagram from http://senseis.xmp.net/?EndgameTesuji16

The incorrect W1 only results in ko]
PL[W]

AB[da][ea][ga][cb][hb][hc][hd][be][ce][de][ee][fe][ge]
AW[db][eb][bc][cc][fc][cd][dd][ed][fd]

;W[bb]C[W1]MN[1]
;B[ba]C[B2]MN[2]

;
)
