(;AB[bc]AB[cc]AB[db]AB[fb]AB[fc]AW[bd]AW[dd]AW[cd]AW[ed]AW[fd]AW[gd]AW[gb]AW[hc]AW[ga]AW[cf]AW[fa]C[Black to live.]AP[goproblems] (;B[ca];W[ea] (;B[bb];W[ac];B[ab];W[dc];B[da]C[Well done !RIGHT]) (;B[ab];W[ba];B[bb];W[da] (;B[aa];W[dc]) (;B[dc];W[cb]C[Unconditional life was possible])) (;B[ba];W[ab]TR[bb]TR[ac])) (;B[ab];W[ba] (;B[ca];W[ea];B[bb];W[da] (;B[aa];W[dc]) (;B[dc];W[cb]C[Unconditional life was possible])) (;B[bb];W[ca])) (;B[ba];W[ab] (;B[bb];W[ac];B[ea];W[ca]C[There is no eye at E18]) (;B[ac];W[da];B[ca];W[ea];B[bb];W[dc])) (;B[bb];W[ca] (;B[ea];W[da];B[eb];W[ac];B[ab];W[ba]) (;B[da];W[ac];B[ab];W[ba])) (;B[ea];W[ca] (;B[ba];W[bb];B[ab];W[aa]C[Unconditional life was possible]) (;B[bb];W[da];B[eb];W[ac];B[ab];W[ba])))