(;AB[rq]AB[qp]AB[pp]AB[nr]AB[kq]AB[kp]AB[kn]AB[ln]AB[mm]AB[ml]AB[mk]AB[mj]AB[nj]AB[nk]AB[ok]AB[om]AB[ql]AB[qk]AB[qj]AB[qi]AB[pj]AB[rm]AW[pk]AW[pl]AW[ol]AB[pm]AW[qm]AW[qn]AW[qo]AW[rn]AW[qq]AW[oq]AW[km]AW[lm]AW[ll]AW[lk]AW[lj]AW[li]AW[mi]AW[ni]AW[oi]AW[pi]AW[oj]AW[im]AW[hn]AB[qh]C[Find the best sequence for white in the corner. No unnecessary moves.]AP[goproblems] (;W[rp];B[sp] (;W[ro];B[pq];W[qr];B[rr];W[pr];B[or] (;W[op];B[po];W[pn];B[oo];W[on];B[no];W[nm];B[nn];W[rl]C[RIGHT]) (;W[rl];B[oo];W[sm]C[White can live bigger.])) (;W[so];B[ro]C[White can live without ko.])) (;W[rl];B[ro] (;W[sm];B[rk]C[White is dead.]) (;W[rk];B[sm]C[White is dead.])))