(;AW[ci]AW[cj]AW[dj]AW[bl]AW[bk]AW[ck]AW[ao]AW[bn]AW[am]AW[cn]AW[bp]AW[cp]AW[cq]AW[do]AB[bm]AB[cm]AB[cl]AB[dl]AB[dk]AB[dn]AB[en]AB[ej]AB[fj]AB[al]AB[bi]AB[bh]AB[ch]AB[dh]AB[di]AB[ag]AB[bf]AB[cf]C[play at a (a1) if you need a ko threat]LB[as:a]AP[goproblems]
(;B[as]C[no black doesn't need to play the ko])
(;B[bj];W[ak];B[aj]C[RIGHT])
(;B[aj];W[ak];B[bj]C[RIGHT])
(;B[ak];W[aj])
(;B[an]C[NOTTHIS]))