(;GM[1]FF[4]SZ[19]
GN[White answers]
PC[https://senseis.xmp.net/?OneSidedUnremovableKoThreat/Discussion]AP[GoWiki:2009]
DT[2023-10-04]
C[Diagram from https://senseis.xmp.net/?OneSidedUnremovableKoThreat/Discussion

White answers]
PL[B]

AB[ca][da][db][ac][dc][ad][bd][cd][dd]
AW[aa][ea][bb][eb][cc][ec][ed][ae][be][ce][de][ee]

;B[ba]C[B1]MN[1]
;W[ab]C[W2]MN[2]

;
)
