(;AB[rr]AB[pr]AB[pq]AB[qp]AB[rp]AB[po]AB[pn]AB[nn]AB[ln]AB[mp]AW[or]AW[oq]AW[op]AW[pp]AW[qo]AW[ro]AW[qm]AW[pm]AW[ol]AW[mk]AB[qk]AB[oj]C[White to play. A throw-in will set up a short ladder.]AP[goproblems];W[on];B[oo];W[no];B[om];W[qn];B[on];W[mn];B[nm];W[mm];B[nl];W[nk];B[mo]
(;W[ml]C[White 1 is the liberty-destroying throw-in, and White has stones in just the right places to make the ladder work. This is actually a kind of squeeze sequence.RIGHT])
(;W[np]C[RIGHT]))