This is my first attempt at making a problem, I hope you like it. I thougt for sure this group was dead(I was playing against a 1 kyu), but towards the end I figured I would give it a try, glad I did.
(;AB[bh]AB[bi]AB[ch]AB[di]AB[dj]AB[cj]AB[cl]AB[cm]AB[bm]AB[am]AW[ck]AW[bk]AW[ei]AW[eh]AW[fj]AW[el]AW[fl]AW[dm]AW[dn]AW[cn]AW[bn]AW[bg]AW[bf]AW[cg]AW[dg]C[black to survive. Assume that white has more ko threats.]AP[goproblems];B[dk];W[dl]
(;B[bj];W[al];B[aj];W[an];B[ah]C[RIGHT])
(;B[aj];W[ak];B[bj];W[an]C[];B[ah]C[RIGHT])
(;B[ak];W[aj];B[bl];W[al]C[ko; but no ko threats for black]))
