(;AW[aa]AW[ab]AB[bb]AW[ca]AW[cb]AW[db]AW[da]AW[ea]AW[eb]AW[ec]AW[dc]AB[cc]AB[cd]AB[dd]AB[ed]AB[fd]AB[fc]AB[fb]AW[bc]AW[bd]AW[ac]AW[be]AW[ce]AW[de]AW[fe]AW[ee]AB[fa]AW[gb]AW[gc]AW[gd]AW[ge]LB[af:Ko]LB[cf:Sente]LB[ef:Gote]LB[cg:seki]LB[eg:seki]C[Black is ko-master. Black plays and gets a...FORCE]AW[ha]AW[hb]LB[gf:Gote]LB[gg:life]AP[goproblems] (;B[cf];W[cg]LB[ba:A];B[ba] (;W[db]C[This is the old solution. Thanks to BartTM for pointing out the error in my ways.] (;B[cb];W[da]C[White made a mistake and Black got a sente seki. Later A can be used as a ko threat.]LB[eb:A]) (;B[ca]C[Black just killed himself in gote! What were you thinking?]) (;B[da];W[cb]) (;B[ea];W[cb]) (;B[eb];W[cb]) (;B[ec]C[On a rather suicidal mood, are we? White doesn't need to answer this and Black still dies.]) (;B[dc];W[cb])) (;W[cb]LB[db:A]C[CHOICE];B[db];W[da]LB[ea:A];B[ea];W[ca]LB[ec:A];B[ec]C[Nope. A gote life it is.])) (;B[af];W[ag]C[If White is going to lose the ko he will force Black to live and even gets to keep sente.]LB[ba:A];B[ba];W[cb]LB[db:A];B[db];W[da]LB[ea:A];B[ea];W[ca]LB[ec:A];B[ec]) (;B[ef];W[eg]C[Black must choose gote seki only if White is the ko-master.]LB[ba:A];B[ba];W[db]LB[cb:A];B[cb];W[eb]LB[ea:A]LB[df:T]C[If White is ko-master he can force a ko with A. Tenuki with T to see how.] (;B[ea];W[da]LB[dc:A];B[dc]C[This is the gote seki.]) (;B[df];W[ea]LB[cf:T];B[cf];W[ga]LB[bf:T];B[bf];W[ca]LB[af:T];B[af];W[ec]LB[da:A];B[da]C[It's a rather bad ko for White though...])) (;B[gf];W[gg];B[ba];W[cb] (;B[db];W[da] (;B[ea];W[ca] (;B[ec]C[RIGHT]) (;B[bb];W[ba];B[ec]C[RIGHT]) (;B[ba];W[bb];B[ec]C[RIGHT]) (;B[eb]C[Cool misclick.]) (;B[dc]C[You might want to practice your aim...]) (;B[ga];W[ec]C[Oh! You still found a way to die in sente!])) (;B[eb]C[Suicide in gote.]) (;B[dc]C[Killing yourself and letting the opponent tenuki sure is fun!]) (;B[ec];W[ea])) (;B[ca];W[db]) (;B[da];W[db]) (;B[dc];W[db]) (;B[ec];W[db]) (;B[eb]C[Black just killed himself in gote, too bad...]) (;B[ea];W[db])))