Endgame. Black to play and get as many points as possible.
(;AB[qa]AB[qb]AB[pb]AB[pc]AB[pd]AB[od]AB[nd]AB[pe]AB[pf]AB[pg]AB[qh]AB[qi]AB[pj]AB[oi]AB[ni]AB[li]AB[mi]AB[mh]AB[nj]AB[nk]AW[pa]AW[oa]AW[ob]AW[oc]AW[nc]AW[oe]AW[nf]AW[mf]AW[mg]AW[og]AW[oh]AW[nh]AW[ph]AW[pi]AW[lh]AW[ji]AW[kj]AW[lj]AW[lk]AW[mk]AW[ll]AW[kl]AB[ml]AB[mm]AB[lm]AB[km]AB[jm]AW[ki]AW[jh]AW[jg]AW[ig]AW[kc]AB[kk]AB[jk]AB[jj]AB[il]AB[ii]AW[md]AW[me]AB[jl]AB[ij]AB[ih]C[Endgame. Get all the points you can. Assume everything to the left of line J is settled.]AB[hh]AW[hg]AP[goproblems]
(;B[ne];W[of]C[You can do better.])
(;B[of]
(;W[ng];B[ne]C[Right! Threaten to take, and you get three extra points (one point of territory, one prisoner, and you prevented White from getting a point).RIGHT])
(;W[qj];B[qk]
(;W[pk];B[rj])
(;W[rj];B[rk];W[ri];B[rh]
(;W[pk];B[oj];W[nl];B[sj];W[ok];B[si])
(;W[sh];B[sj];W[si];B[sg])))
(;W[qg];B[rg];W[qf];B[rf];W[qe];B[re];W[qd];B[rd];W[qc];B[rc]))
(;B[mj];W[of]C[That move gained you no points.])
(;B[nl];W[of]C[There was no threat, so you don't need to protect here.])
(;B[qj];W[of]C[There was no threat here, so no need to respond. You could have gotten more.])
(;B[qg];W[of]C[There was no threat here, so no need to respond. You could have gotten more, though.])
(;B[pk];W[of]C[There was no threat here, so no need to respond. You could have gotten more, though.])
(;B[mc];W[mb]
(;B[lc]
(;W[lb];B[ld];W[le]C[Ladder, doesn't work.])
(;W[ld];B[lb];W[la];B[kb];W[jb];B[ka];W[ja]C[Ladder doesn't work.]))
(;B[na];W[lc]C[The cut doesn't work.]))
(;B[gg]C[NOTTHIS])
(;B[gh]C[NOTTHIS])
(;B[gf]C[NOTTHIS])
(;B[ge]C[NOTTHIS])
(;B[gd]C[NOTTHIS])
(;B[gc]C[NOTTHIS])
(;B[gb]C[NOTTHIS])
(;B[ga]C[NOTTHIS])
(;B[gi]C[NOTTHIS])
(;B[gj]C[NOTTHIS])
(;B[gk]C[NOTTHIS])
(;B[gl]C[NOTTHIS])
(;B[gm]C[NOTTHIS])
(;B[gn]C[NOTTHIS])
(;B[hi]C[NOTTHIS])
(;B[hj]C[NOTTHIS])
(;B[hk]C[NOTTHIS])
(;B[hl]C[NOTTHIS])
(;B[hm]C[NOTTHIS])
(;B[hn]C[NOTTHIS])
(;B[ha]C[NOTTHIS])
(;B[hb]C[NOTTHIS])
(;B[hc]C[NOTTHIS])
(;B[hd]C[NOTTHIS])
(;B[he]C[NOTTHIS])
(;B[hf]C[NOTTHIS]))