(;AB[bc]AB[cc]AB[cb]AB[dc]AB[ec]AB[eb]AB[fb]AB[da]AW[fa]AW[gb]AW[gc]AW[fc]AW[ed]AW[dd]AW[cd]AW[bd]AW[ac]AW[bb]C[Black to start a Ko ( It is the only way for black to live)]AP[goproblems]
(;B[ab];W[aa];B[ba];W[ca]C[Good Job !!!RIGHT])
(;B[ba];W[ab]C[Nope !]))