White just played the marked stone. How should Black answer?
(;AB[de]AB[dd]AB[dc]AB[cc]AB[fd]AB[hd]AB[fg]AB[gh]AB[dj]AB[cq]AB[dp]AB[fp]AB[en]AB[hn]AB[jp]AB[mo]AB[nq]AB[pp]AB[qp]AB[rp]AB[mm]AB[pl]AB[ql]AB[rl]AW[ro]AW[qn]AW[rm]AW[oo]AW[om]AW[nl]AW[nj]AW[mj]AW[mi]AB[mh]AW[ng]AW[nh]AB[pj]AB[pi]AB[oi]AB[ni]AB[ri]AB[qh]AB[rg]AB[rf]AB[re]AB[rd]AB[qe]AW[oh]AW[ph]AW[pg]AW[qg]AW[qf]AW[of]AW[oe]AW[pe]AB[od]AB[pd]AB[ne]AB[nf]AB[mf]AB[me]AB[le]AB[md]AB[nd]AB[mc]AB[oc]AB[pc]AB[pb]AW[qd]AW[qc]AW[rc]AW[qb]AW[pa]AW[ob]AW[nc]AW[nb]AW[mb]AW[lc]AW[ld]AW[kd]AW[ke]AB[kf]AB[je]AB[jd]AB[ic]AB[hb]AW[jc]AW[ib]AW[kb]AW[bb]AW[bc]AW[cd]AW[ce]AW[df]AW[dg]AW[eh]AW[fh]AW[fj]AW[fk]AW[fm]AW[em]AW[cn]AW[bp]AW[bq]AW[mg]TR[mg]AB[jj]AB[jg]AP[goproblems]
(;B[lh]C[RIGHT];W[lf]AB[ml]TR[ml]MA[nj]MA[mj]MA[mi]MA[nl]MA[om]MA[oo]MA[qn]MA[rm]MA[ro]C[White diesRIGHT])
(;B[lf];W[lh]TR[oo]TR[om]TR[qn]TR[rm]TR[ro]TR[nl]TR[nj]TR[mj]TR[mi]C[Black M14 is nothing but a big endgame move. White's bottom group is bigger and more urgent.])
(;B[lg];W[lh]C[The marked stones are safe in sente because black still needs to fix at M14.]TR[nl]TR[nj]TR[mj]TR[mi]TR[om]TR[oo]TR[qn]TR[rm]TR[ro]))