Do you need to protect the corner? Play at T if not, but if White then can get ko or reduce it to a seki in sente that is a failure.
(;AW[an]AW[bn]AW[cn]AW[dn]AW[en]AW[fo]AW[bo]AW[do]AW[ep]AW[fq]AW[fr]AW[fs]AW[er]AB[ao]AB[ap]AB[bp]AB[cp]AB[co]AB[dp]AB[dq]AB[eq]AB[dr]AB[ds]AB[es]LB[gm:T]C[Play T if you wish to tenuki]AP[goproblems]
(;B[br]C[RIGHT])
(;B[bs];W[br]
(;B[ar];W[bq]
(;B[aq]C[RIGHT])
(;B[cr]C[RIGHT])
(;B[cq]C[RIGHT])
(;B[cs];W[aq]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.]))
(;B[bq]
(;W[ar];B[cr]C[RIGHT])
(;W[cr];B[ar]C[RIGHT]))
(;B[cr]
(;W[ar];B[bq]C[RIGHT])
(;W[bq];B[ar]C[RIGHT])))
(;B[ar];W[br]
(;B[bs];W[bq]
(;B[aq]C[RIGHT])
(;B[cr]C[RIGHT])
(;B[cq]C[RIGHT])
(;B[cs];W[aq]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.]))
(;B[as];W[bs]
(;B[aq];W[cr])
(;B[bq];W[cr]
(;B[cs];W[aq];B[ar]C[Gote seki.])
(;B[cq];W[aq];B[ar]C[Gote seki]))
(;B[cr];W[bq];B[aq]C[Gote seki]))
(;B[aq];W[cr]
(;B[bs];W[cs]C[10000 year ko. Neither side wishes to connect it nor play B3 or C3 and have the other side retake the ko.])
(;B[cs];W[bs];B[bq]C[Gote seki])
(;B[bq];W[cs];B[bs];W[as]C[Ko])
(;B[cq];W[bs]))
(;B[bq];W[cr];B[bs]C[RIGHT])
(;B[cr];W[bs];B[bq]C[RIGHT])
(;B[cq];W[bs];B[bq];W[as]C[10000 year ko. Neither side wishes to connect it nor play C1 or C2 and have the other side retake the ko.])
(;B[cs];W[bq]
(;B[as];W[aq])
(;B[aq];W[bs]C[];B[cr]C[Gote seki])
(;B[cr];W[aq];B[bs];W[as]C[Ko])
(;B[cq];W[bs]C[]MA[cr])
(;B[bs];W[aq]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.])))
(;B[as];W[br]
(;B[bq];W[cr];B[ar];W[bs]
(;B[cq];W[aq];B[ar]C[Gote seki])
(;B[cs];W[aq];B[ar]C[Gote seki.]))
(;B[cr];W[bq];B[bs];W[ar]
(;B[aq];W[cs];B[bs]C[Gote seki])
(;B[cq];W[cs];B[bs]C[Gote seki])))
(;B[aq];W[br];B[bs];W[cr]
(;B[cs];W[ar];B[bq]C[Gote seki])
(;B[ar];W[cs]C[10000 year ko. Neither side wishes to connect it nor play B3 or C3 and have the other side retake the ko.])
(;B[bq];W[cs];B[ar];W[as]C[Ko])
(;B[cq];W[ar]))
(;B[bq];W[br]
(;B[ar];W[cr];B[bs]C[RIGHT])
(;B[bs]
(;W[ar];B[cr]C[RIGHT])
(;W[cr];B[ar]C[RIGHT]))
(;B[cr]
(;W[ar];B[bs]C[RIGHT])
(;W[bs];B[ar]C[RIGHT]))
(;B[as];W[cr];B[ar];W[bs]
(;B[cq])
(;B[cs])))
(;B[cq];W[br];B[ar];W[bs];B[bq];W[as]C[10000 year ko. Neither side wishes to connect it nor play C1 or C2 and have the other side retake the ko.])
(;B[cr];W[br]
(;B[ar];W[bs];B[bq]C[RIGHT])
(;B[bq]
(;W[ar];B[bs]C[RIGHT])
(;W[bs];B[ar]C[RIGHT]))
(;B[bs]
(;W[ar];B[bq]C[RIGHT])
(;W[bq];B[ar]C[RIGHT])))
(;B[cs];W[br];B[ar];W[bq]
(;B[as];W[aq])
(;B[aq];W[bs]C[];B[cr]C[Gote seki])
(;B[cr];W[aq];B[bs];W[as]C[Ko])
(;B[cq];W[bs]C[]MA[cr])
(;B[bs]))
(;B[gm]C[];W[br]C[The tenuki costs black at least 8 points locally. Bb2 secures the corner.]
(;B[ar];W[cr]
(;B[bs];W[cs]
(;B[bq];W[as]C[Ko])
(;B[aq];W[as]C[Ko]))
(;B[cs];W[bs];B[bq]C[Gote seki.])
(;B[bq];W[bs];B[cs]C[Gote seki])
(;B[aq];W[cs];B[bs];W[as]C[Ko])
(;B[cq];W[cs]
(;B[bq];W[aq])
(;B[aq];W[bs])
(;B[bs];W[as]C[Ko])
(;B[as];W[bq]))
(;B[as];W[bq]
(;B[bs];W[aq])
(;B[cq];W[aq])))
(;B[as]
(;W[bq]
(;B[ar];W[bs]C[]
(;B[aq];W[cr]C[Black is dead.])
(;B[cs];W[aq])
(;B[cq];W[cr]C[Black is dead.]))
(;B[aq];W[bs]C[]
(;B[ar];W[cr]C[Black is dead.])
(;B[cs];W[ar]LB[gn:T])
(;B[cr];W[ar]C[Black is dead. One eye versus no eyes.])
(;B[cq];W[ar]C[Black is dead. One eye versus no eyes.]))
(;B[bs];W[cr]
(;B[ar];W[aq])
(;B[cq];W[cs]))
(;B[cs];W[bs]C[One eye versus none.CHOICE])
(;B[cr];W[bs]C[One eye versus none.])
(;B[cq];W[bs]))
(;W[ar]
(;B[aq];W[cr]C[])
(;B[bs];W[cr]
(;B[cs];W[bq])
(;B[bq];W[cs]))
(;B[bq];W[cr]LB[gn:T];B[gn];W[cs]C[])
(;B[cs];W[bs]
(;B[aq])
(;B[bq];W[cr]C[Black is dead. One eye versus no eyes.]))
(;B[cr];W[bq]
(;B[aq])
(;B[bs];W[cs];B[bs]C[Gote seki])
(;B[cq];W[bs]))
(;B[cq];W[bs]C[Black is dead. One eye versus two eyes.]))
(;W[bs];B[ar];W[aq]))
(;B[aq];W[ar];B[as];W[cr]C[])
(;B[bs];W[bq]
(;B[cr];W[ar];B[aq]C[Gote seki])
(;B[ar];W[aq]
(;B[cs]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.])
(;B[as];W[cs])
(;B[cr];W[as]C[Ko])
(;B[cq];W[as]C[Ko]))
(;B[cs];W[aq]
(;B[ar]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.])
(;B[as];W[ar])
(;B[cr];W[ar])
(;B[cq];W[ar]))
(;B[aq];W[ar]
(;B[cr]C[Gote seki])
(;B[cq];W[cr])
(;B[cs];W[cr])
(;B[as]))
(;B[cq];W[ar]
(;B[cr]C[Gote seki])
(;B[aq];W[cr])
(;B[cs];W[aq]))
(;B[as];W[cr]
(;B[ar])
(;B[cq];W[cs])))
(;B[bq];W[cr]
(;B[ar];W[bs];B[cs]C[Gote seki])
(;B[bs];W[cs];B[ar];W[as]C[Ko])
(;B[cs];W[ar]
(;B[bs]C[Gote seki])
(;B[cq];W[bs])
(;B[aq];W[bs])
(;B[as]))
(;B[cq];W[cs])
(;B[aq];W[ar]))
(;B[cs];W[bs]
(;B[as];W[bq]TR[ar]TR[aq]C[Wa2 and Wa3 are miai for killing black with one eye versus none.])
(;B[ar];W[bq]C[]
(;B[as];W[aq])
(;B[aq]))
(;B[aq];W[bq]TR[ar]TR[cr]C[Wa2 and Wc2 are miai for killing black with a dead shape inside.])
(;B[bq];W[ar];B[cr]C[Seki])
(;B[cr];W[bq]TR[ar]TR[aq]C[Wa2 and Wa3 are miai for killing black with one eye versus none.])
(;B[cq];W[bq]TR[ar]TR[aq]C[Wa2 and Wa3 are miai for killing black with one eye versus none.]))
(;B[cr];W[bq]
(;B[bs];W[ar];B[aq]C[Gote seki])
(;B[ar];W[aq];B[bs];W[as]C[Ko])
(;B[aq];W[bs]
(;B[ar]C[Gote seki])
(;B[cq];W[ar])
(;B[cs];W[ar])
(;B[as];W[ar]C[Black is dead. One eye versus no eyes.]))
(;B[cq];W[aq])
(;B[cs];W[bs]))
(;B[cq];W[ar]
(;B[as];W[bs]C[Black is dead. One eye versus two eyes.])
(;B[aq];W[cr]C[])
(;B[bs];W[cr]MA[cs]MA[bq])
(;B[bq];W[cr])
(;B[cs];W[bs]C[One eye versus none.])
(;B[cr];W[bs]C[One eye versus none.]))))