Black (bass) requests instant death for both the white groups, since has calculated, that he will be one liberty ahead in the semeai. However, white (Selena) politely declines the offer..
(;SZ[19]AW[kb]AW[lb]AW[nb]AW[mc]AW[nc]AW[rc]AW[qd]AW[me]AW[ne]AW[pe]AW[qe]AW[nf]AW[of]AW[ng]AW[pj]AB[ja]AB[jb]AB[ob]AB[rb]AB[jc]AB[lc]AB[oc]AB[qc]AB[kd]AB[od]AB[pd]AB[je]AB[le]AB[oe]AB[lf]AB[pf]AB[qf]AB[og]AB[mh]AB[nh]AB[oh]TR[rb]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]PW[White]PB[Black]PL[W];W[qb]
(;B[pb]
(;W[pc];B[qa]C[and if black declines the ko?];W[qc]
(;B[re]
(;W[ra]
(;B[sa]
(;W[sc]
(;B[sd]
(;W[rf]C[2 liberties beat 3. Black dies.RIGHT])
(;W[pa];B[rd]C[ko.]))
(;B[pa]C[This does not help black.];W[sb]))
(;W[pa];B[sc]C[ko.]))
(;B[sb]C[this does not help black.];W[pa];B[oa];W[qa]))
(;W[sc];B[sd]
(;W[sb];B[ra]
(;W[pa];B[oa];W[rf]C[2 liberties beat 3.RIGHT])
(;W[rf]C[2 liberties beat 3. Black dies.RIGHT]))
(;W[rf];B[sb])
(;W[ra];B[sa]
(;W[rf]C[2 liberties beat 3.RIGHT])
(;W[pa];B[rd]C[ko.]))
(;W[pa];B[oa]
(;W[ra];B[sb];W[pa]C[ko. You can do better.])
(;W[sb];B[ra];W[rf]C[2 liberties beat 3.RIGHT]))
(;W[nd];B[rd]))
(;W[pa];B[oa]
(;W[ra];B[sb]
(;W[sc];B[sd]
(;W[sa];B[rb]
(;W[sb];B[rd];W[pa]C[ko. You can do better.])
(;W[pa]C[ko. You can do better.]))
(;W[pa]C[nice ko, but you can do better.]))
(;W[pa]C[very good ko, but you can do better.]))
(;W[sc];B[sb]
(;W[ra];B[sd]
(;W[sa];B[rb]
(;W[sb];B[rd];W[pa]C[ko. You can do better.])
(;W[pa]C[ko. You can do better.]))
(;W[pa]C[favourable ko, but you can do better.]))
(;W[rf];B[sd]))
(;W[sb];B[ra]
(;W[sc];B[sd];W[rf]C[2 liberties beat 3.RIGHT])
(;W[nd];B[rd])
(;W[na];B[rd])
(;W[rf]C[2 liberties beat 3.RIGHT])))
(;W[sb];B[ra]
(;W[sc];B[sd]
(;W[rf]C[2 liberties beat 3.RIGHT])
(;W[pa];B[oa]
(;W[rf]C[2 liberties beat 3.RIGHT])
(;W[nd];B[rd])
(;W[na];B[rd]))
(;W[nd];B[rd]))
(;W[pa];B[oa]
(;W[sc];B[sd];W[rf]C[2 liberties beat 3.RIGHT])
(;W[rf]C[2 liberties beat 3.RIGHT]))
(;W[rf]C[2 liberties beat 3.RIGHT])))
(;B[sc]C[this does not help black.];W[sd];B[re];W[sb];B[ra];W[rf]))
(;W[qa];B[pa]C[ko, but not best (R19 is a lost threat)]))
(;B[pc]C[speculative variation 1, see comments];W[rd];B[sb];W[ra];B[pb];W[qa];B[pa];W[rf];B[rg];W[sc];B[sa];W[se];B[qa];W[pg];B[qg];W[ph];B[qh];W[pi]C[this depends on the outside, but black has no easy way out.]))