(;AB[ps]AW[os]AW[ns]AW[nr]AW[nq]AB[or]AB[oq]AB[op]AB[np]AB[no]AB[pp]AB[qp]AB[rp]AB[sp]AW[sr]AW[rq]AW[qq]AW[pq]AW[pr]AB[sq]AW[mo]AW[mp]AW[lp]AW[kp]AW[jq]AB[lq]AB[mq]AB[mr]AP[goproblems]
(;W[rs]TR[ss]TR[qs]C[White forms an eye in the corner:)RIGHT])
(;W[qs];B[rr];W[rs];B[ss]C[Only ko. White can live without ko.]LB[in:K]
(;W[sr]C[NOTTHIS])
(;W[in]LB[jn:A]
(;B[jn];W[sr]
(;B[ss]C[NOTTHIS])
(;B[ms];W[qr];B[ps]))
(;B[sr]C[CHOICE]))))