(;AB[rb]AB[qc]AB[pd]AB[pf]AB[ob]AB[nc]AW[qb]AW[pb]AW[rc]AW[rd]AW[qf]AW[qg]AW[qi]AW[lc]AW[le]TR[pb]TR[qb]C[Balck to capture the marked stones.]AP[goproblems]
(;B[ra];W[pc]
(;B[qd]
(;W[oc]
(;B[od];W[nb]
(;B[pa];W[oa]
(;B[qa];W[ob];B[mb]C[RIGHT])
(;B[mb];W[mc]
(;B[qa];W[nd])
(;B[nd];W[qa])))
(;B[qa];W[oa]
(;B[pa];W[ob];B[mb]C[RIGHT])
(;B[mb];W[mc]
(;B[nd];W[sb];B[lb];W[kb])
(;B[pa];W[nd])))
(;B[mb];W[oa];B[qa];W[pa]
(;B[ma];W[mc]
(;B[nd];W[sb];B[na];W[sa])
(;B[na];W[nd]))
(;B[mc];W[sb]))
(;B[oa];W[mc];B[nd];W[na]))
(;B[nb];W[od]
(;B[oe];W[nd]
(;B[ne];W[md])
(;B[md];W[ne]
(;B[nf];W[me])
(;B[me];W[nf])))
(;B[nd];W[pe])))
(;W[od];B[oe];W[oc];B[nd];W[nb]
(;B[pa];W[oa]
(;B[qa];W[ob];B[mb]C[RIGHT])
(;B[mb];W[qa]))
(;B[qa];W[oa]
(;B[pa];W[ob];B[mb]C[RIGHT])
(;B[mb];W[sb]))
(;B[oa];W[na]
(;B[mb];W[pa];B[mc];W[sb])
(;B[pa];W[qa];B[oa];W[sb])
(;B[qa];W[pa]
(;B[oa];W[ob]
(;B[mb];W[sb])
(;B[re];W[qe];B[pe];W[sb]))
(;B[ob];W[oa]
(;B[mb];W[sb])
(;B[re];W[qe];B[pe];W[sb]))
(;B[mb];W[sb])
(;B[re];W[qe];B[pe];W[sb]))
(;B[re];W[qe];B[pe];W[ne]))
(;B[na];W[oa]
(;B[qa];W[mb])
(;B[mb];W[ma]
(;B[qa]
(;W[pa];B[la];W[sb])
(;W[sb]
(;B[la];W[na])
(;B[re];W[qe])))
(;B[la];W[na];B[qa];W[sb])
(;B[re];W[qe]))
(;B[re];W[qe]))
(;B[mb];W[oa]
(;B[qa];W[sb])
(;B[ma];W[na]
(;B[qa];W[sb])
(;B[re];W[qe])))))
(;B[pa];W[qd])
(;B[qa];W[qd])
(;B[oc];W[qd]))
(;B[pc];W[ra]
(;B[pa];W[sb])
(;B[sb];W[sc]))
(;B[qa];W[sb];B[ra];W[pa]
(;B[pc];W[sa])
(;B[oa];W[sa]))
(;B[sb];W[ra];B[pa];W[sc]))