Note that the solution MIGHT be a ko IF you cannot live/kill unconditionally.
Information about the problem source can be found
here.
(;AB[ah]AB[bh]AB[ci]AB[dh]AB[dj]AB[dk]AB[dl]AB[dm]AB[cn]AB[co]AB[bo]AB[ao]AW[bn]AW[am]AW[cm]AW[cl]AW[ck]AW[cj]AW[bk]AW[bi]AW[ai]AP[goproblems]
(;B[aj];W[bj]
(;B[bm];W[bl];B[an];W[ak];B[bm]C[RIGHT])
(;B[an];W[bm]))
(;B[ak];W[al]
(;B[bm];W[aj])
(;B[aj];W[bj];B[bm];W[an]))
(;B[bm];W[aj]
(;B[an];W[al])
(;B[al];W[bl])))