(;AB[oq]AB[pq]AB[nq]AB[or]AB[mq]AB[qr]AB[ps]AW[rq]AW[qq]AW[rr]AW[sp]AW[ro]AW[qo]AW[pp]AB[so]AB[sn]AB[rn]AB[qn]AB[po]AW[oo]AW[no]AW[np]AW[mp]AB[on]AB[nn]AB[mo]AB[lo]AW[lp]AW[lq]AW[kq]AW[mr]AB[jp]AW[iq]C[Black to live.]AP[goproblems]
(;B[ns];W[nr];B[lr]C[Black is alive.RIGHT])
(;B[nr];W[ns]C[];B[lr];W[ls]C[ko])
(;B[qs];W[ns];B[op];W[pn]C[Black can't make two eyes...])
(;B[ms]
(;W[lr]))
(;B[lr];W[ns]
(;B[nr];W[ls])
(;B[ls];W[kr];B[nr];W[ks])))