(;AW[sr]AW[sq]AW[rq]AW[qq]AW[qr]AW[pq]AB[pr]AB[oq]AB[op]AB[pp]AB[qp]AB[sp]AB[rp]AB[no]AW[qs]C[Black can't kill White but has the best result. Assumed all other territories and kos are settled.]AP[goproblems]
(;B[or];W[rs]
(;B[ps]C[RIGHT])
(;B[os];W[ps]))
(;B[os];W[ps];B[or];W[rs])
(;B[ps];W[or]))