(;AB[qc]AB[qd]AB[pd]AB[pb]AB[oe]AB[ne]AB[md]AB[mc]AB[nb]AB[na]AB[kc]AB[jc]AB[jb]AB[ke]AW[kb]AW[lb]AW[mb]AW[ma]AW[nc]AW[nd]AW[oc]AW[pc]AW[ob]C[Black to kill]AP[goproblems]
(;B[qa]
(;W[ka]
(;B[oa];W[pa];B[oa]C[RIGHT])
(;B[od];W[oa]))
(;W[oa];B[ka]C[RIGHT]))
(;B[ka];W[qb]
(;B[rb];W[pa])
(;B[pa];W[qa])
(;B[od];W[pa])
(;B[qa];W[pa];B[rb];W[ra])
(;B[lc];W[oa]
(;B[rb];W[pa])
(;B[qa];W[rb];B[ra];W[sb])))
(;B[qb];W[ka]
(;B[oa];W[pa];B[na];W[oa])
(;B[od];W[oa]))
(;B[pa];W[oa]
(;B[ka];W[qb])
(;B[qb];W[ka])
(;B[nb];W[qb])
(;B[od];W[qb]))
(;B[od];W[oa]
(;B[qb];W[ka])
(;B[ka];W[qb];B[qa];W[rb];B[ra];W[sb]))
(;B[oa];W[pa]
(;B[qb];W[ka];B[na];W[oa])
(;B[ka];W[qb]))
(;B[lc];W[oa]
(;B[ka];W[qb]
(;B[rb];W[pa])
(;B[qa];W[rb];B[ra];W[sb]))
(;B[qb];W[ka])))