An interesting shape i saw on KGS. In the actual game, the black group along the B line was dead but... The shape is a good L&D problem nonetheless.
(;AW[bp]AW[cp]AW[cr]AW[dr]AB[er]AB[fs]AB[fq]AB[ep]AB[eo]AW[dp]AB[do]AW[co]AB[bo]AB[bn]AB[cn]AB[dm]AB[dq]TR[dq]C[Black has just played the marked move. White to live.]AW[ao]AP[goproblems]
(;W[bs];B[ar]
(;W[ds];B[bq];W[cq];B[ap]
(;W[aq];B[iq]LB[ip:A]C[Please answer the black ko threat at AFORCE];W[ip];B[ap]
(;W[br];B[an];W[as];B[ao];W[aq]C[Nicely done. :)RIGHT])
(;W[as];B[an];W[br];B[ao];W[aq]C[yay, you lived :DRIGHT]))
(;W[br];B[an];W[as];B[ao];W[aq]C[nice :)RIGHT])
(;W[as]C[NOTTHIS]))
(;W[cq];B[ds];W[aq];B[br]C[oww])
(;W[aq];B[ds]TR[cq]TR[br]C[Dieeeeeed.]))
(;W[cq];B[ds]C[this shape is dead :(])
(;W[ds];B[cq];W[bq];B[bs]C[];W[eq];B[dq]
(;W[br];B[ap]C[dead])
(;W[ap];B[ar]C[CHOICE];W[br]C[Dead in gote. FAIL! (Bent 4 in corner)]))
(;W[ar];B[bs]
(;W[br];B[ap]
(;W[aq];B[cq]C[Nope...])
(;W[cq];B[aq]C[Nuh uh.]))
(;W[cq];B[ds];W[cs];B[ap]C[Why did the chicken cross the road? Because he wanted death by car after his corner died :(])
(;W[ap];B[br]
(;W[bq];B[ds]C[woops])
(;W[cq];B[ds];W[cs];B[bq]C[Life? Seki? no. Just dead.])))
(;W[ap];B[br]
(;W[bs];B[ar]
(;W[ds];B[cq];W[bq];B[eq]MA[aq]C[Uh oh, can't approach :(])
(;W[cq];B[ds]C[No good!]))
(;W[ar];B[bs]
(;W[bq];B[ds]C[Dieeeeeeee])
(;W[cq];B[ds];W[cs];B[bq]C[It's not seki. You're still dead. Accept it!]))
(;W[cq];B[ds]C[dead])
(;W[ds];B[cq];W[bq];B[eq]
(;W[bs];B[ar]MA[aq]C[:(]MA[as])
(;W[ar];B[bs]MA[cs]MA[as]C[:(])))
(;W[br];B[cq];W[bq];B[ds];W[cs];B[ap]C[nope.]))