(Well notice by both players and not played... ^_^)
(;AB[bd]AB[cd]AB[ce]AB[dd]AB[dc]AW[bc]AW[db]AW[cb]AW[eb]AW[ec]AW[ed]AW[de]AW[df]AW[cg]AW[dh]AW[di]AW[ci]AW[cj]AW[bj]AB[aj]AB[bi]AB[bh]AB[ch]AB[bg]AB[bk]AB[ck]AB[dj]AB[dk]AB[dl]AB[bl]AW[ak]AW[am]AW[bm]AW[cm]AW[dm]AW[em]AW[el]AW[ek]AW[ej]AB[cf]AB[bf]AW[ef]AW[eg]AW[eh]C[How would white kill if Black added the stone?]LB[bd:A]AP[goproblems]
(;W[ae];B[ad]
(;W[ai];B[ah];W[af]C[Well done! :)RIGHT])
(;W[af];B[ai];W[ag]C[Only seki! :(]))
(;W[ai];B[ae]C[:(])
(;W[ad];B[ae]C[:(])
(;W[ah];B[ai]C[:(]))