(;AB[cs]AB[cr]AB[dr]AB[dq]AB[eq]AB[fq]AB[gq]AB[hq]AB[hr]AW[bs]AW[br]AW[cq]AW[cp]AW[dp]AW[fp]AW[ep]AW[gp]AW[hp]AW[ip]AW[ir]AW[jr]AW[fr]C[White to Kill B.]AP[goproblems]
(;W[gs];B[hs];W[es]C[B is dead. Any way of approaching w leads to a dead shape.RIGHT])
(;W[es];B[gs]
(;W[fs];B[er]C[B is alive in seki])
(;W[er];B[fs]C[B is alive in seki]))
(;W[fs];B[gs]
(;W[er];B[es];W[ds];B[gr]C[W cannot connect, and B lives.])
(;W[es];B[er]C[B is alive in seki.]))
(;W[gr])
(;W[hs];B[gs]
(;W[is];B[es]C[B is alive.])
(;W[fs];B[es];W[gr];B[er]C[B is alive.])))