(;AB[rc]AB[qb]AB[pb]AB[pc]AB[od]AB[nd]AB[nc]AB[nb]AB[md]AB[kb]AW[kc]AW[mc]AW[mb]AW[oc]AW[ob]AW[oa]AW[na]AW[pd]AW[qd]AW[qc]AW[pe]AW[qg]TR[na]TR[oa]TR[ob]TR[oc]C[Black to capture the marked stones.]AP[goproblems]
(;B[la]
(;W[lb];B[pa]C[RIGHT])
(;W[ma];B[lc];W[ld];B[lb]C[RIGHT]))
(;B[lc];W[rb]
(;B[lb];W[qa];B[ma];W[pa])
(;B[sb];W[ra])
(;B[ra];W[sb]
(;B[lb]
(;W[pa];B[ma];W[qa])
(;W[qa];B[pa];W[qa]))
(;B[sc];W[lb]
(;B[pa];W[qa])
(;B[sa];W[ld];B[jb])
(;B[ld];W[jb];B[sa];W[ka];B[pa];W[ma]))
(;B[qa];W[lb]
(;B[ld];W[jb])
(;B[jc];W[ld])
(;B[jb];W[ld]))
(;B[pa];W[qa])))
(;B[pa];W[ma]
(;B[lc];W[rb])
(;B[ra];W[lb]))
(;B[ma];W[la];B[pa];W[ma]
(;B[lc];W[rb])
(;B[ra];W[lc])))