(;AB[qr]AB[qq]AB[pq]AB[pp]AB[rp]AB[ro]AB[oq]AB[nq]AB[np]AB[no]AB[oo]AW[nn]AW[on]AW[pn]AW[mo]AW[mp]AW[mq]AW[nr]AW[or]AW[pr]AW[qp]AW[rq]AW[sp]AW[so]AW[sn]AW[rm]AW[qm]C[black can live without ko]AP[goproblems]
(;B[po];W[qo];B[qn];W[qo];B[sr];W[rr];B[rs];W[sq])
(;B[qo];W[po];B[rr];W[sr])
(;B[sr];W[rr]
(;B[rs];W[sq]
(;B[po];W[qo];B[qn];W[qo])
(;B[rn];W[sm]
(;B[po]C[RIGHT])
(;B[qo];W[po]))
(;B[qo];W[po]))
(;B[rn];W[qn];B[qo];W[po];B[rs];W[qp]))
(;B[rr];W[sr];B[po];W[qo];B[qn];W[qo])
(;B[rn];W[qn]
(;B[rr];W[sr])
(;B[qo];W[po];B[sr];W[rr];B[rs];W[qp]))
(;B[rs];W[sr];B[rn];W[qo];B[rr];W[qn])
(;B[sq];W[sr];B[po];W[qo];B[qn];W[qo]))