(;AB[sb]AB[sc]AB[rc]AW[rb]AW[qa]AW[qc]AW[pb]AW[qb]AW[oa]AW[ma]AW[nb]AW[nc]AW[nd]AW[ne]AW[nf]AW[ng]AB[mb]AB[la]AB[lc]AB[md]AB[ld]AB[kc]AB[jc]AB[ib]AB[hc]AB[gc]AB[fb]AB[ga]AW[ea]AW[eb]AW[ec]AW[fc]AW[ed]AW[ee]AW[gd]AW[hd]AW[id]AW[ic]AW[jd]AW[kd]AW[me]AB[qd]AB[pd]AB[pc]AB[oc]AB[ob]AB[re]AB[le]AB[lf]AW[kf]AW[nh]AW[jf]AW[lg]AW[kg]AB[pg]AP[goproblems]
(;B[na];W[hb]AB[qd]AB[pd]AB[pc]AB[oc]AB[ob]AB[re]
(;B[ra])
(;B[gb];W[ma]AB[le]AB[lf]AW[kg]AW[jf]AW[lg]AW[nh]AB[pg]LB[gg:K]C[K = ko threat]
(;B[ra]C[Double koRIGHT])
(;B[gg];W[na]))
(;B[pa];W[jb]))
(;B[ha];W[na])
(;B[ra];W[sa]LB[gg:K]C[K= ko threat]
(;B[gg];W[na])
(;B[na]C[double koRIGHT])))