(;AB[pa]AB[pb]AB[pc]AB[qc]AW[qb]AW[rc]AW[qd]AW[pd]AW[re]AW[sd]AW[oc]AW[ob]AW[nb]AW[mb]AB[lb]AB[kc]AB[mc]AB[nc]AB[od]AB[oe]AW[pf]AB[me]AW[qf]AP[goproblems]
(;B[rb];W[ra]
(;B[ma];W[sb]
(;B[na]C[RIGHT])
(;B[oa]C[RIGHT]))
(;B[oa];W[sb]
(;B[ma]C[RIGHT])
(;B[na]C[RIGHT]))
(;B[na]C[RIGHT])
(;B[qa];W[sb]C[ko])
(;B[sb];W[oa]))
(;B[qa];W[rb]
(;B[ma];W[ra])
(;B[oa];W[ra])
(;B[na];W[ra])
(;B[ra];W[oa]))
(;B[ra];W[oa];B[qa];W[rb])
(;B[oa];W[qa])
(;B[ma];W[qa])
(;B[na];W[qa])
(;B[sb];W[qa])
(;B[sa];W[qa])
(;B[pe];W[qa]))