this is my first problem.it's really easy.i hope there won't be to much problems with it since it's my first time using the problem editor.
(;AP[goproblems]AW[ra]AW[rb]AW[sb]AW[qb]AW[pb]AW[oc]AW[pd]AW[qd]AB[qc]AW[rd]AB[sd]AW[sc]AB[re]AB[qe]AB[pe]AB[se]AB[od]AB[nd]AB[mc]AB[nb]AB[ob]AB[pa]C[black to play and kill](;B[rc];W[pc])(;B[qa];W[oa](;B[pa];W[pc])(;B[pc];W[rc](;B[pc];W[pa])(;B[pa];W[pc])))(;B[nc];W[pc])(;B[pc];W[rc](;B[pc]C[RIGHT])(;B[nc];W[pc])(;B[oa];W[pc])(;B[qa];W[pc]))(;B[oa];W[pc])(;B[na];W[pc]))