(;AB[pp]AB[po]AB[qn]AB[qq]AB[oq]AB[or]AW[pq]AW[pr]AW[qr]AW[op]AW[np]AW[mq]AW[kq]AP[goproblems]
(;B[rr];W[rq]
(;B[qp];W[rs];B[sr];W[sq];B[ps];W[ss];B[rr];W[sr];B[os]C[Very good! The 'tombstone squeeze'.RIGHT])
(;B[qs];W[qp];B[ps];W[qq];B[qo];W[sr];B[rs];W[ro];B[rn];W[nr]C[White wins this capturing race.])
(;B[ps];W[qp];B[qs];W[qq];B[qo];W[sr];B[rs];W[ro]
(;B[rn];W[nr]C[White wins this capturing race.])
(;B[sp];W[so];B[os];W[nr];B[ss];W[rp];B[sq];W[sr];B[sq];W[nq]C[White wins this capturing race.])
(;B[os];W[sp]
(;B[rn];W[nr];B[sn];W[nq];B[so];W[ns])
(;B[sn];W[rn];B[rm];W[nr];B[sm];W[nq];B[so]C[White can tenuki now and still catch black.])
(;B[ss];W[sq]
(;B[rn];W[nr];B[sn];W[nq]C[Nope.])
(;B[sn];W[rn];B[rm];W[nr];B[sm];W[nq]C[White wins this race.])))))
(;B[rq];W[rr]
(;B[ps];W[sq];B[sp];W[sr];B[rs];W[rp];B[qp];W[so]
(;B[qs];W[nr];B[ro];W[nq]C[Nope.])
(;B[ro];W[nr];B[sp];W[nq]C[Nope.]))
(;B[sr];W[nr]C[Nope.])
(;B[os];W[sr]
(;B[sq];W[nr]C[Nope.])
(;B[ps];W[nr]
(;B[qs];W[nq];B[rs];W[ns])
(;B[rs];W[nq];B[qs];W[ns])
(;B[sq];W[nq]
(;B[rs];W[ns])
(;B[qs];W[ns]))))))