I guess I have seen this one in Hikaru no Go manga comics... Thanks to alpc, bitti and BartTM for the great support!!!
edit: I have found the right place at the manga. It's Chapter 104 pg 2 [VOLUME#12].
(;AB[rb]AB[sb]AB[pc]AB[pb]AB[oc]AB[od]AB[oe]AB[pe]AB[qe]AB[qd]AB[rf]AW[ra]AW[rc]AW[qb]AW[pa]AW[ob]AW[nb]AW[nc]AW[nd]AW[ne]AW[of]AW[og]AW[qg]AW[rg]AW[qf]C[Black to live unconditionally.]SZ[19]AP[MultiGo:3.9.4]
(;B[rd]
(;W[sf]
(;B[qc];W[sd];B[sc];W[se]C[Ko for life...])
(;B[se];W[re];B[sc];W[sd];B[qc];W[qa]C[Ko for life...])
(;B[sc];W[re]
(;B[sd]C[ Alive!RIGHT])
(;B[qc];W[sd]
(;B[se];W[sd]C[ Black is alive in double Ko. But you can do betterRIGHT])
(;B[qa]C[RIGHT]))))
(;W[qc]
(;B[se];W[sc]C[ Clearly, two eyes. But black can do better. See variations.RIGHT])
(;B[sc];W[qa]
(;B[se]C[ Life!!! See variations.RIGHT])
(;B[sf]C[ Life!!! See variations.RIGHT]))
(;B[sf];W[sd];B[se];W[qa];B[sc]C[ Life!!! See variations.RIGHT])
(;B[re];W[sf];B[sc];W[qa]C[Dead...])
(;B[sd];W[sf];B[se]C[Ko for life... Not good..])))
(;B[qc];W[sc]C[Ko for life...])
(;B[se];W[rd];B[qc];W[re];B[qa]C[Ko for life...])
(;B[sf];W[rd];B[qc];W[re];B[qa]C[Ko for life...]))
