(;GM[1]FF[4]SZ[19]
GN[B starts a ko]
PC[http://senseis.xmp.net/?BentFourInTheCornerIsDead]AP[GoWiki:2009]
DT[2009-11-04]
C[Diagram from http://senseis.xmp.net/?BentFourInTheCornerIsDead

B starts a ko]
PL[B]

AB[ba][fa][bb][cb][eb][fb][cc][dc][ec][dd][de][af][bf][cf][cg][ch]
AW[ga][ab][gb][bc][fc][gc][ad][cd][ed][fd][ae][be][ce][ee][df][ef]

;B[ca]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[aa]C[B3]MN[3]

;
)
