(;C[Black isn't dead just yet. From Hikaru no Go volume 2, but slightly edited.]AW[cs]AW[br]AW[bq]AW[ap]AW[bo]AW[co]AW[an]AB[bp]AB[cp]AB[dp]AB[do]AB[ep]AB[cn]AB[cm]AW[dn]AW[en]AW[eo]AW[dl]AW[el]AB[fm]AB[fn]AB[fo]AW[fp]AB[cq]AB[cr]AW[dr]AW[er]AB[ds]AB[fr]AB[fq]AB[eq]AW[gp]AW[gq]AW[gr]AB[fs]AB[gs]AW[hq]AW[iq]AW[jq]AW[hs]AB[hr]AB[ir]AB[jr]AW[kr]AW[lr]AB[kq]AB[lq]AB[mr]AW[kp]AB[lp]AW[bn]AW[bm]AW[bl]AW[dm]AP[goproblems]
(;W[js]C[];B[ar]
(;W[aq];B[bs]
(;W[ao];B[is]
(;W[hs]C[Black has just one real eye.RIGHT]MA[dr]MA[er])
(;W[ks];B[ls])
(;W[as];B[ks]))
(;W[as];B[is]
(;W[hs];B[ar]
(;W[ao]C[RIGHT])
(;W[es];B[ao]))
(;W[ks];B[ls])
(;W[cs];B[ks])
(;W[ar];B[ao])
(;W[ao];B[ks]))
(;W[is];B[ao])
(;W[es];B[ao]))
(;W[bs];B[aq]
(;W[es];B[ao]C[Ko. If Black connects at A4 it is a seki.])
(;W[as];B[aq]
(;W[ao];B[ar])
(;W[ar];B[aq])
(;W[es];B[ao]C[Ko. If Black connects it is seki.])
(;W[is];B[ar]))
(;W[ao];B[as])
(;W[is];B[as]))
(;W[is];B[bs]
(;W[aq];B[ao])
(;W[ao];B[aq]))
(;W[as];B[bs]
(;W[ao];B[aq])
(;W[aq];B[ao]))
(;W[ao];B[bs];W[aq];B[is]
(;W[hs]C[Black has just one real eye.RIGHT]MA[dr]MA[er])
(;W[ks];B[ls])
(;W[as];B[ks]))
(;W[es]C[RIGHT]))
(;W[es];B[is]
(;W[ds];B[ks]
(;W[bs];B[ls])
(;W[ls];B[ms])
(;W[dq];B[bs]))
(;W[bs];B[ks];W[ds];B[ls])
(;W[dq];B[ds])
(;W[js];B[ks])
(;W[ks];B[ms]
(;W[bs];B[ls];W[ds];B[js])
(;W[ds];B[ls];W[bs];B[js]))
(;W[ls];B[ms])
(;W[ms];B[ks]))
(;W[bs];B[is]
(;W[es];B[ks];W[ds])
(;W[ks];B[es];W[ms];B[nr])
(;W[ls];B[ms])
(;W[js];B[ks]))
(;W[is];B[js])
(;W[ks];B[is]
(;W[es];B[ms]
(;W[bs];B[ls];W[ds];B[js])
(;W[ds];B[ls];W[bs]))
(;W[ms];B[bs]
(;W[aq];B[nr])
(;W[nr];B[ar]))
(;W[bs];B[es];W[ms];B[nr])))