(;AB[ob]AB[oc]AB[pc]AB[qc]AB[qd]AB[qe]AB[re]AB[sd]AW[oa]AW[na]AW[nb]AW[nc]AW[nd]AW[pd]AW[pe]AW[pf]AW[qf]AW[rf]AW[sf]AW[se]AB[pa]AB[qb]AW[rb]AW[sc]AW[od]C[Very late endgame. Nothing else on the board.]AP[goproblems] (;B[rc];W[sb] (;B[rd];W[ra]C[seki]) (;B[ra];W[rd]C[ko])) (;B[rd];W[ra] (;B[sb];W[qa];B[rc];W[pb]C[ko]) (;B[qa];W[rc]C[dead]) (;B[rc];W[qa];B[sb];W[pb]C[ko])) (;B[ra];W[rd] (;B[rc];W[sb]C[ko]) (;B[sb];W[sa];B[rc];W[qa];B[sd];W[pb];B[sb]C[double ko, unconditional life. Twisted, eh? ^^RIGHT])) (;B[sb];W[rc] (;B[rd];W[sa];B[qa]C[seki]) (;B[ra];W[sa];B[rd];W[qa]C[ko])) (;B[sa];W[rd]C[dead]))