(;GM[1]FF[4]SZ[19]
GN[Ko? (Is this alive?)]
PC[http://senseis.xmp.net/?RTGProblem58/Attempts]AP[GoWiki:2009]
DT[2009-08-04]
C[Diagram from http://senseis.xmp.net/?RTGProblem58/Attempts

Ko? (Is this alive?)]
PL[B]

AB[cb][db][eb][cc][bd][be][bf]
AW[fb][bc][dc][ec][fc][ad][cd][ce][cf][bg][cg]

;B[bb]C[B1]MN[1]
;W[ab]C[W2]MN[2]
;B[aa]C[B3]MN[3]
;W[ba]C[W4]MN[4]
;B[ca]C[B5]MN[5]
;W[af]C[W6]MN[6]

;
)
