(;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]))