(;AW[sb]AW[rb]AW[qc]AW[pb]AW[qd]AW[oa]AW[nb]AW[oc]AW[nc]AB[na]AB[ma]AB[mb]AB[mc]AB[nd]AB[od]AB[pd]AB[pc]AB[ld]AB[qe]AB[pf]AB[rf]AB[rd]AB[sc]C[White to live !!! (Without Ko)]AP[goproblems] (;W[ob];B[qa];W[ra];B[qb];W[pa];B[qb];W[rc];B[qa] (;W[sd];B[re];W[pb]C[Good Job!! Thats the best result you can do :-) !!RIGHT]) (;W[pb]C[];B[sa])) (;W[qb];B[ra];W[qa];B[ob]C[Sorry :-(]) (;W[pa];B[ra];W[qa];B[rc]C[Nope!]) (;W[qa];B[ob] (;W[rc];B[pa]C[Ko is not the solution !!]) (;W[pa];B[rc]C[No!])) (;W[ra] (;B[pa];W[qa];B[ob] (;W[pa];B[rc]C[Sorry!!]) (;W[rc];B[pa]C[Ko is not the solution !!!])) (;B[qb];W[qa];B[ob];W[rc];B[pa]C[Ko is not the solution !!!])) (;W[rc];B[ra];W[qa];B[ob]C[Ko is not the solution!!]))