(;AB[qp]AB[rq]AB[ro]AB[rp]AB[po]AB[oo]AB[no]AB[nn]AB[om]AB[pm]AB[pn]AB[qm]AB[ql]AW[rk]AW[qk]AW[pl]AW[ol]AW[nm]AW[mm]AW[mo]AW[mn]AW[np]AW[op]AW[pp]AW[pq]AW[qq]AW[rr]AW[sr]AW[rn]AW[ri]C[Anybody can connect the single marked stone along the edge if that is all that is required, but there is also a way to kill Black in the process.]AP[goproblems]
(;W[so];B[sp]
(;W[rm];B[rl];W[sl];B[sm]
(;W[sq]
(;B[qo]C[CHOICE]
(;W[sn]C[RIGHT])
(;W[sk]C[RIGHT]))
(;B[sn]C[CHOICE];W[so];B[sn]
(;W[sk]C[RIGHT])
(;W[sm]C[RIGHT])))
(;W[sn];B[qn])
(;W[sk];B[qn]))
(;W[rl];B[rm]
(;W[sm];B[qn];W[sn];B[sl])
(;W[sq];B[sn]))
(;W[sl];B[rm];W[sm];B[sn])
(;W[sm];B[sl];W[sq];B[qo];W[rl];B[rm];W[sk];B[sn]))
(;W[rm];B[rl];W[sl];B[sm]
(;W[sn];B[so]
(;W[sk];B[sq])
(;W[sq];B[qn]))
(;W[sk];B[so]
(;W[sq]
(;B[sn])
(;B[qn]))
(;W[sn];B[sq])))
(;W[sn];B[rm]
(;W[so];B[sp]
(;W[sm];B[sl])
(;W[sq];B[qo]))
(;W[sm];B[sl];W[rl];B[so]
(;W[sq];B[qn])
(;W[sk]
(;B[sq])
(;B[qn]
(;W[sl];B[sq])
(;W[sq];B[sl];W[sm];B[sn])))))
(;W[sm];B[sl];W[rl];B[rm]
(;W[sk];B[so]
(;W[sn]
(;B[sq])
(;B[qn]
(;W[sl];B[sq])
(;W[sq];B[sl];W[sm];B[sn])))
(;W[sq]
(;B[sn])
(;B[qn])))
(;W[sn];B[so]
(;W[sq];B[qn])
(;W[sk]
(;B[sq])
(;B[qn]
(;W[sl];B[sq])
(;W[sq];B[sl];W[sm];B[sn]))))
(;W[so];B[qn];W[sk];B[sp]))
(;W[rl];B[rm];W[sm];B[so])
(;W[sl];B[sm];W[rm];B[rl]
(;W[sn];B[so]
(;W[sk];B[sq])
(;W[sq];B[qn]))
(;W[sk];B[so]
(;W[sq]
(;B[sn])
(;B[qn]))
(;W[sn];B[sq])))
(;W[sq];B[so]
(;W[rl];B[rm];W[sm];B[sn])
(;W[sm];B[sl];W[rl];B[rm];W[sk];B[sn])
(;W[rm];B[rl];W[sl];B[sm];W[sn];B[qn])
(;W[sl];B[rm]
(;W[sm];B[sn])
(;W[sn];B[sm]))))