(;AB[sb]AB[rb]AB[qc]AB[pb]AB[ob]AW[lb]AW[mc]AW[nc]AW[pc]AW[pd]AW[rc]AW[rd]AW[kc]C[White to save Black.]AP[goproblems]
(;W[pa];B[qa]C[Well done! The white stone guarantees an eye there! :)RIGHT])
(;W[oa]C[Doesn't really help Black...]TR[na]TR[nb])
(;W[nb]C[Doesn't really help Black...]TR[oa]TR[qa])
(;W[na]C[Doesn't really help Black...]TR[oa]TR[qa])
(;W[mb]C[Doesn't really help Black...]TR[oa]TR[qa])
(;W[ma]TR[oa]TR[qa]C[Doesn't really help Black...])
(;W[la]C[Doesn't really help Black...]TR[oa]TR[qa])
(;W[qb]C[Doesn't really help Black...]TR[qa]TR[oa])
(;W[qa]C[Doesn't really help Black...]TR[ra]TR[qb])
(;W[ra]C[Doesn't really help Black...]TR[qa]TR[oa])
(;W[sa]C[Doesn't really help Black...]TR[qa]TR[oa])
(;W[ld]C[Black can't live without the aid...]
(;B[qa];W[oa])
(;B[oa];W[qa]TR[ra]TR[qb])
(;B[qb];W[ra]TR[qa]TR[oa])
(;B[nb];W[na]TR[qa]TR[oa]))
(;W[qd]C[Doesn't really help Black...]TR[oa]TR[qa])
(;W[oc]C[Doesn't really help Black...]TR[qa]TR[oa])
(;W[sc]C[];B[qb]C[Well done! Now that R18 is sente Black can make a straight 4 or run out! :)RIGHT]TR[qd]TR[oa]))