(;AB[ab]AB[bc]AB[cc]AB[cb]AB[dc]AB[fc]AB[gc]AB[gb]AB[hb]AW[ac]AW[bb]AW[ad]AW[bd]AW[cd]AW[dd]AW[ed]AW[fd]AW[gd]AW[hc]AW[ib]AW[ic]AW[jc]AW[hd]C[Black shouldn't have tenukied from this one either... This group is no longer safe... =)]MA[fc]AP[goproblems]
(;W[eb]
(;B[ec];W[aa];B[ha]
(;W[fa];B[da]
(;W[ea];B[fb];W[ca];B[ba]C[ko for seki... nice! black of course could b19 right away after e18 but you'd get quite a few points even if in gote... =)RIGHT])
(;W[ca];B[ba]C[B has F18 as a local threat like this...])
(;W[fb];B[ea];W[ca];B[ba]C[ko for seki... nice! black of course could b19 right away after e18 but you'd get quite a few points even if in gote... =)RIGHT])
(;W[ab];B[ca]MA[fb]MA[ea]))
(;W[da];B[fa]C[w can't get away with e18!]LB[ca:1]LB[ea:2]LB[db:3]LB[fb:4])
(;W[ca];B[fa]C[w can't get away with e18!])
(;W[ea];B[fa]C[w is captured!])
(;W[ia];B[fa]C[w can't get away with e18!])
(;W[fb];B[fa];W[ea];B[da];W[ga];B[db])
(;W[db];B[fa]C[w can't get away with e18!])
(;W[ab];B[fa]C[w can't get away with e18!]))
(;B[ba];W[ec]C[also is possible for b, sente too =)RIGHT]))
(;W[aa];B[eb]C[a sente reduction but b is alive with points!])
(;W[ha];B[ba]))