(;AB[sb]AB[rb]AB[rc]AB[qc]AB[pc]AB[oc]AB[ob]AB[oa]AW[ra]AW[qa]AW[pa]AW[nb]AW[od]AW[pd]AW[qd]AW[rd]AW[rf]AW[mb]AW[md]AW[le]C[Black to make life.]AP[goproblems]
(;B[qb]C[Good. This is a seki.RIGHT])
(;B[sa];W[qb];B[pb];W[qa])
(;B[nd];W[qb]
(;B[ne];W[nc];B[sd];W[re])
(;B[sd];W[ne])
(;B[nc];W[ne];B[mc];W[lc];B[lb];W[kb];B[kc];W[la])
(;B[mc];W[nc]))
(;B[pb];W[qb];B[sa])
(;B[nc];W[qb]
(;B[mc];W[lc];B[nd];W[ne])
(;B[nd]))
(;B[na];W[qb];B[nc];W[mc])
(;B[sd];W[qb]))