(;GM[1]FF[4]SZ[19]
GN[When is fighting this ko favourable?]
PC[http://senseis.xmp.net/?HolIgorExploresYoseProblem1]AP[GoWiki:2009]
DT[2018-10-15]
C[Diagram from http://senseis.xmp.net/?HolIgorExploresYoseProblem1

When is fighting this ko favourable?]
PL[B]

AB[ab][bc][bd][be][ce][de][df][ef]
AW[ca][bb][db][eb][gb][cc][ec][cd][dd][ee][fe]

;B[ba]C[B1]MN[1]

;
)
