(;AB[dd]AB[cf]AW[cc]AB[dc]AW[db]AB[eb]AW[bb]AB[bd]LB[da:A]C[For some reason black has deviated from the joseki move A. Play along.]TR[bd]LB[db:1]LB[eb:2]LB[bb:3]AP[goproblems] (;W[bc];B[ac] (;W[ca];B[ab] (;W[fb];B[ea];W[ec];B[fc];W[ed];B[gb];W[cd]C[You are alive!RIGHT]) (;W[ec];B[fc]LB[ed:A]C[Do not play A] (;W[cd];B[de];W[be]C[You have found life.RIGHT]) (;W[ed]C[NOTTHIS])) (;W[cd];B[be] (;W[fb];B[fc];W[ea];B[gb];W[ec];B[ed];W[eb];B[gc]C[Later you may want to play B19 to prevent a 2-step ko.RIGHT]) (;W[ec] (;B[fb];W[de];B[ed] (;W[ee];B[fd];W[ce]C[Escape is a valid solution.RIGHT]) (;W[ce]C[Escape is a valid solution.RIGHT])) (;B[ce] (;W[fb];B[ba]) (;W[fc];B[ba]C[The ko is nastier.]))) (;W[ce];B[de] (;W[bf];B[bg];W[df];B[cg] (;W[ec];B[fc];W[ed];B[ee];W[fd];B[fb]) (;W[fb];B[ec];W[ea];B[ba]C[I'm afraid this won't do..])) (;W[fb];B[ec];W[ea];B[ba]C[Ko. This won't do.])))) (;W[ab];B[ca] (;W[ba];B[da] (;W[cb];B[fb];W[cd];B[be];W[ce];B[de];W[ea];B[da]) (;W[cd];B[be] (;W[de];B[ce];W[ec];B[ed]C[Now what?]) (;W[ce];B[de];W[bf];B[bg];W[df];B[cg];W[ec];B[ed]TR[db]TR[ec]C[Now what?]))) (;W[cd];B[be] (;W[de];B[ce] (;W[fb];B[da];W[ec];B[cb];W[ed];B[db];W[ad];B[ee];W[df];B[ba];W[fa];B[fc];W[fd];B[dg];W[ef];B[fe];W[gd];B[ff]) (;W[ec];B[ed];W[fb];B[ea])) (;W[ce];B[de] (;W[bf];B[bg];W[df];B[cg];W[ec];B[fc];W[ed];B[ee];W[fd];B[cb]) (;W[fb];B[ec] (;W[da];B[ea]) (;W[ea];B[da])) (;W[ec];B[fc];W[bf];B[bg];W[df];B[cg];W[ee];B[ed];W[fd];B[ec]) (;W[df];B[bf];W[ec];B[fc];W[ed];B[ee];W[fd];B[cb])) (;W[ec];B[ed];W[fc];B[cb])) (;W[da];B[ea] (;W[cb];B[ba]) (;W[cd];B[be] (;W[de];B[ce];W[cb];B[ba];W[ad];B[ec]) (;W[ce];B[de];W[bf];B[bg];W[df];B[cg]C[Having the marked stones in atari doesn't really help]TR[da]TR[db])) (;W[ba];B[cb])) (;W[ec];B[ed] (;W[fc];B[cb]) (;W[cd];B[be];W[ce];B[df];W[de];B[ee];W[fb];B[ea])))) (;W[ca];B[bc]C[A false eye..]MA[cb];W[fb];B[ea];W[ec];B[fc];W[ed];B[gb];W[cd];B[de]C[And no getting out.]) (;W[ab];B[bc] (;W[da];B[fc]C[You're dead. The marked points are miai.]MA[ba]MA[cb]) (;W[fb];B[ea];W[ec];B[fc];W[ed] (;B[da];W[ca];B[cb]C[Unfortunately the ko is not good enough anymore.]) (;B[gb]C[Black won't play this move on the problem];W[da];B[fa];W[cd];B[de];W[cb];B[be];W[ba])) (;W[ec];B[fb];W[cd];B[ce];W[cb];B[ed];W[fc];B[gb]C[Not even a ladder.])) (;W[cd];B[be] (;W[ca];B[ea] (;W[da] (;B[bc];W[ec];B[ce] (;W[fb]C[RIGHT]) (;W[cb];B[ab]C[oops]) (;W[fc]C[RIGHT])) (;B[de];W[bc])) (;W[de];B[ce];W[ec];B[ed];W[fc];B[bc];W[cb];B[fd];W[gc];B[gd];W[hc]C[RIGHT])) (;W[bc];B[da];W[ca]C[The ko is no longer good enough.]) (;W[de];B[ce] (;W[fb];B[da] (;W[cb];B[ec]) (;W[ca];B[cb]C[Not good])) (;W[ec];B[ed];W[fc];B[fb] (;W[fd];B[ee];W[gb]C[Works.RIGHT]) (;W[gb]C[Yes indeedRIGHT]))) (;W[fb];B[da] (;W[cb];B[ec]) (;W[ca];B[cb]C[Bad ko.])) (;W[ec];B[da];W[cb];B[fb];W[de];B[ed] (;W[ce]C[RIGHT]) (;W[ee];B[fd];W[ce]C[EscapedRIGHT]))) (;W[da];B[bc] (;W[fb];B[fc] (;W[ea];B[gb];W[ec];B[ed] (;W[eb];B[gc]C[Doesn't work]) (;W[gc];B[eb]C[A fair ko, but ko is not good enough.])) (;W[fa];B[gb] (;W[hb];B[ga];W[ea];B[gc]) (;W[ea];B[gc]))) (;W[ec];B[fc];W[ed];B[fb];W[cd];B[de]) (;W[ab];B[fb] (;W[ba];B[cb]) (;W[cb];B[ba];W[cd];B[ce];W[be];B[bf]))) (;W[ea];B[fb] (;W[bc];B[ac];W[ab];B[ca];W[ba];B[da]) (;W[cd];B[be];W[bc];B[ac];W[ab];B[ca])) (;W[fb];B[da] (;W[ca];B[cb]C[Ko's not good enough]) (;W[cb];B[ec])))