(;GM[1]FF[4]SZ[19]
GN[Black can kill]
PC[http://senseis.xmp.net/?FiveHundredAndOneTesujiProblems/Errata]AP[GoWiki:2009]
DT[2010-04-09]
C[Diagram from http://senseis.xmp.net/?FiveHundredAndOneTesujiProblems/Errata

Black can kill]
PL[B]

AB[ca][cb][hb][bc][cc][dc][hc][bd][ed][fd][gd][gf]
AW[ba][db][eb][gb][ec][gc][ad][cd][dd][hd][be][cf][ef]

;B[ea]C[B1]MN[1]
;W[fb]C[W2]MN[2]
;B[da]C[B3]MN[3]
;W[ac]C[W4]MN[4]
;B[ab]C[B5]MN[5]
;W[ae]C[W6]MN[6]
;B[ga]C[B7]MN[7]

;
)
