A comment on an added variation on problem 17771 inspired me to investigate its outcome. There were so many interesting variations that I decided to make it its own problem. Comments, questions, and corrections to make this fascinating situation clear are all welcome.
(;AB[jg]AB[ih]AB[ii]AB[kh]AB[ki]AB[li]AB[mi]AB[mj]AB[hi]AB[gi]AB[gj]AB[fk]AB[fl]AB[nk]AB[nl]AB[gm]AB[mm]AB[hn]AB[in]AB[jn]AB[kn]AB[ln]AB[jm]AB[jk]AW[gk]AW[hk]AW[kk]AW[lk]AW[mk]AW[hj]AW[ij]AW[jj]AW[kj]AW[lj]AW[ji]AW[jh]AW[hm]AW[im]AW[km]AW[lm]AW[jl]TR[kk]C[W has just played the marked stone. B to kill. ]AP[goproblems]
(;B[ll]
(;W[gl]
(;B[kl];W[il]C[W lives.])
(;B[il];W[hl];B[kl]C[W dies. Good job!RIGHT]))
(;W[kl]C[CHOICE]
(;B[ml]
(;W[gl];B[il]
(;W[hl];B[ik]C[W dies. Good job!RIGHT])
(;W[ik];B[hl]C[W dies. Good job!RIGHT]))
(;W[ik];B[hl]TR[gl]TR[il]C[Miai to kill. W dies. Good job!RIGHT]))
(;B[il];W[hl]C[W lives. ])
(;B[hl];W[il]TR[gl]TR[ml]C[Miai for a second eye; W lives. ])
(;B[gl];W[hl]TR[ik]TR[ml]C[Miai for life; W lives. ]))
(;W[il]
(;B[kl];W[gl]C[W lives.])
(;B[ml];W[gl]C[W lives.])
(;B[gl]TR[kl]TR[ml]C[Miai to kill. W dies. Good job!RIGHT]))
(;W[ml]
(;B[kl];W[ik];B[hl]TR[il]TR[gl]C[Miai to kill. W dies. Good job!RIGHT])
(;B[il];W[kl]TR[ik]TR[hl]C[Miai for life. B can capture two stones in sente, but W lives. ])
(;B[hl];W[kl]TR[ik]TR[il]C[Miai for life. B can capture two stones in sente, but W lives. ]))
(;W[hl];B[ik]TR[kl]TR[ml]C[Miai to kill. W dies. Good job!RIGHT])
(;W[ik]
(;B[hl]TR[gl]TR[il]MA[kl]MA[ml]C[Both sets of marked points are miai to prevent W from getting a second eye. W dies. Good job!RIGHT])
(;B[kl];W[hl]C[W lives (and avoids creating a ko threat).])))
(;B[kl];W[ll]
(;B[hl];W[il]C[W lives.])
(;B[il];W[ik]C[B can capture two stones in gote, but W lives. ]))
(;B[il];W[ik]
(;B[hl];W[ll]C[W lives. (W could have played N8 instead of M8 for one more point, but would create a massive ko threat in the process - probably not best.)])
(;B[ll];W[hl]C[B can capture two stones in gote, but W lives. ]))
(;B[hl];W[ll];B[il];W[ik]C[W lives.])
(;B[ik];W[il]TR[gl]TR[ll]C[Miai for life; W lives.])
(;B[gl];W[ll];B[il];W[ik]C[B can capture two stones in gote, but W lives.])
(;B[ml];W[ll];B[il];W[ik]C[B can capture two stones in gote, but W lives. ]))