(;SZ[19]AW[qa]AW[lb]AW[nb]AW[nc]AW[nd]AW[od]AW[pd]AW[pe]AW[qe]AW[re]AW[se]AB[oc]AB[pc]AB[qc]AB[qd]AB[rd]AB[sd]C[Black to live! (Avoid ko)]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00] (;B[pa] (;W[rb] (;B[qb] (;W[ra] (;B[ob];W[na] (;B[oa];W[sc] (;B[sa]C[Ohh! Soo close - T18 instead is sente! :(]) (;B[sb]C[];W[sa]C[Well done! Sente seki! :)RIGHT])) (;B[sb];W[oa];B[rc];W[pb]C[:(]MA[pa]) (;B[rc];W[oa];B[sb];W[pb]C[:(]MA[pa])) (;B[sb];W[oa] (;B[ob];W[pb]MA[pa]C[:(]) (;B[rc];W[pb]C[:(]) (;B[pb];W[ob])) (;B[rc];W[oa] (;B[ob];W[pb]MA[pa]C[:(]) (;B[sb];W[pb]C[:(]))) (;W[sb];B[ob];W[ra]C[RIGHT]) (;W[ob];B[sb];W[ra];B[rc]C[RIGHT])) (;B[ob];W[qb];B[sb]C[Only ko..]LB[pb:1]LB[oa:2]LB[na:3]LB[sc:4]LB[sa:5]LB[ra:6]MA[sa]) (;B[sb];W[pb] (;B[qb];W[oa] (;B[ra];W[sa]C[:(]MA[ra]) (;B[ob];W[pa];B[ra];W[sa]C[:(]MA[ra])) (;B[ob];W[oa] (;B[qb];W[pa];B[ra];W[sa]C[:(]MA[ra]) (;B[ra];W[qb]C[:(])) (;B[ra];W[qb]C[:(])) (;B[pb];W[sb]C[Eye vs. None.. :(]) (;B[oa];W[sb]C[Eye vs. None.. :(]) (;B[ra];W[qb]C[Miai. Either white gets an eye and wins the semai or connects outside.]TR[pb]TR[sb])) (;W[oa];B[ra]C[RIGHT]) (;W[ra];B[ob]C[RIGHT]) (;W[sb];B[rb]C[RIGHT]) (;W[qb];B[rb]C[RIGHT]) (;W[ob];B[rb]TR[ra]TR[pb]C[RIGHT]) (;W[pb] (;B[ra]C[RIGHT]) (;B[qb]C[Wrong! See next problem for ws play! :)]) (;B[rb];W[ra]C[:(]) (;B[ob];W[oa] (;B[qb];W[ra];B[pa]C[:(]MA[pb]) (;B[rb];W[ra]C[:(]) (;B[ra];W[rb] (;B[qb];W[sa];B[pa]MA[pb];W[na];B[ra]C[:(]MA[qa]) (;B[sb];W[qb]C[:(]))) (;B[oa];W[ob] (;B[rb];W[ra]C[:(]) (;B[qb];W[na]C[:(])))) (;B[qb];W[pa] (;B[ra];W[sb];B[oa];W[ob];B[pb];W[pa]C[:(]) (;B[sb];W[ra]C[:(]) (;B[rb];W[ra]C[:(]) (;B[oa];W[ob] (;B[ra];W[sb];B[pb];W[pa]C[:(]) (;B[sb];W[ra]C[:(]))) (;B[pb];W[pa] (;B[oa];W[ob] (;B[rb];W[ra]C[:(]) (;B[qb];W[ra]C[:(])) (;B[rb];W[ra]C[:(])) (;B[ob];W[oa] (;B[qb];W[pa]TR[ra]TR[sb]C[:(]) (;B[pa];W[pb] (;B[qb];W[ra];B[pa]C[:(]MA[pb]) (;B[ra];W[rb] (;B[qb];W[sa];B[pa]MA[pb];W[na];B[ra]C[:(]MA[qa]) (;B[sb];W[qb]C[:(])) (;B[rb];W[ra]C[:(])) (;B[rb];W[ra]C[:(])) (;B[rb];W[ra]C[:(]) (;B[sb];W[ra]C[:(]) (;B[oa];W[ob] (;B[pb];W[pa] (;B[rb];W[ra]C[:(]) (;B[ra];W[sb];B[qb];W[pa]C[:(]) (;B[sb];W[ra]C[:(]) (;B[qb];W[ra]C[:(])) (;B[rb];W[ra]C[:(])) (;B[ra];W[rb] (;B[qb];W[pa] (;B[sb];W[sa]C[:(]MA[ra]) (;B[oa];W[ob] (;B[pb];W[sb];B[pa];W[sa] (;B[rc];W[qa]C[:(]MA[ra]) (;B[sc];W[qa]C[:(]MA[ra])) (;B[sb];W[sa]C[:(]MA[ra])) (;B[pb];W[sa]C[:(])) (;B[sb];W[qb] (;B[pb];W[oa];B[pa];W[sa]C[:(]MA[ra]) (;B[ob];W[oa]C[:(]) (;B[pa];W[pb]C[:(]) (;B[oa];W[ob];B[pb];W[na] (;B[pa];W[sa]C[:(]MA[ra]) (;B[rc];W[sa]C[:(]MA[ra]))) (;B[ob];W[qb] (;B[pa];W[pb] (;B[oa];W[sc]C[:(]) (;B[sb];W[oa]C[:(]) (;B[rc];W[oa]C[:(])) (;B[oa];W[sb]C[Eye vs no eye. :)]) (;B[sb];W[oa]C[:(]) (;B[rc];W[oa]C[:(])) (;B[pa];W[qb]TR[pb]TR[sb]C[Miai! If B tries to prevent the connection, W makes an eye and kills. If B tries to deny the risky eye W connets! :)]) (;B[oa];W[sa]C[:(])))