(;AB[sd]AB[rd]AB[qd]AB[oc]AB[nc]AW[rb]AW[pb]AB[nb]AB[pd]AB[mb]AB[ma]AB[pc]AW[la]AW[lb]AW[mc]AW[nd]AW[od]AW[pe]AW[qe]AW[re]AW[se]AW[md]AW[lc]AP[goproblems]
(;B[sb];W[qb]C[it will lead to a bad ko])
(;B[oa]C[]
(;W[pa]C[CHOICE]
(;B[qb]C[RIGHT]
(;W[ra];B[sb];W[qc];B[rc])
(;W[qa];B[rc]))
(;B[ob];W[qb];B[sb];W[ra]))
(;W[qb]C[CHOICE];B[ob]C[it will lead to SEKIRIGHT])))