(;AB[ea]AB[da]AB[db]AB[cb]AB[cc]AB[cd]AB[ce]AB[bf]AB[bg]AB[bh]AB[ah]AB[ch]AB[dh]AB[ci]AB[cj]AB[bj]AB[eg]AB[fg]AB[fh]AB[fi]AB[am]AB[bo]AB[cn]AB[dn]AB[en]AB[fn]AB[em]AB[el]AB[ep]AB[dp]AB[cq]AB[cr]AB[cs]AB[dr]AB[fs]AB[qp]AB[pp]AB[np]AB[mp]AB[kp]AB[jp]AB[ip]AB[hp]AB[gp]AB[pn]AB[on]AB[nn]AB[mn]AB[ln]AB[kn]AB[jn]AB[in]AB[io]AB[lo]AB[oo]AB[jm]AB[lm]AB[hm]AB[gm]AB[gl]AB[il]AB[ik]AB[hk]AB[ij]AW[lq]AW[lp]AW[kq]AW[jq]AW[iq]AW[hq]AW[hs]AW[es]AW[er]AW[eq]AW[dq]AW[ds]AW[gr]AW[fq]AW[fp]AW[fo]AW[go]AW[ho]AW[gn]AW[fa]AW[gb]AW[hb]AW[eb]AW[ec]AW[dc]AW[dd]AW[de]AW[df]AW[cf]AW[cg]AW[ef]AW[ff]AW[gg]AW[hf]AW[hh]AW[ig]AW[bi]AW[ai]AW[aj]AW[ak]AW[bk]AW[bl]AW[al]AW[ck]AW[cl]AW[cm]AW[dk]AW[ek]AW[fk]AW[fl]AW[fm]AW[gk]AW[ej]AW[ei]AW[gj]AW[hj]AW[ii]AW[ji]AW[jh]AW[ki]AW[jj]AW[jk]AW[jl]AW[kk]AW[kl]AW[km]AB[kj]AB[lk]AW[ll]AW[ml]AW[mm]AW[nm]AW[om]AB[pm]AW[ol]AW[pl]AW[ql]AW[rl]AB[rk]AB[qk]AB[pk]AB[ok]AB[sk]AB[nk]AB[nj]AB[mj]AB[li]AB[lh]AB[kh]AB[ni]AB[nh]AB[oh]AB[mf]AW[oi]AW[oj]AW[pj]AW[qj]AW[rj]AB[pi]AB[qi]AB[qh]AB[qg]AW[ph]AB[pf]AB[ne]AB[oe]AB[rf]AB[re]AB[qe]AB[qd]AB[pd]AW[rd]AW[rc]AW[qc]AW[pc]AW[od]AW[nd]AW[me]AW[le]AW[kg]AW[kf]AB[ke]AB[je]AB[ie]AB[if]AB[jd]AB[hd]AB[ic]AW[he]AB[jb]AW[kd]AW[kc]C[White has played the marked stone. Please play the best endgame.]AW[ng]AW[cp]AW[eo]TR[eo]AW[bp]AB[bq]AB[bn]AW[gi]AB[gs]AB[bm]AW[mr]AW[nr]AB[pq]AB[ps]AW[nq]AW[or]AW[pr]AB[qr]AW[sl]AW[rp]AB[ro]AP[goproblems];B[do];W[lg];B[mg];W[rn] (;B[lf];W[jg] (;B[md];W[ld];B[mc]C[You got it :). Solving tsumego, one can usually assume that there is a problem with a good solution before him. However, these opportunities are harder to spot in the middle of a game. This psychological element is not often present in go problems, so I tried to incorporate it.RIGHT]) (;B[ld];W[md];B[lc];W[lb])) (;B[qn]C[Not Ideal. Look for a better move...]) (;B[sn]C[Not Ideal. Look for a better move...]) (;B[qm]C[Not Ideal. Look for a better move...]) (;B[rm]C[Not Ideal. Look for a better move...]) (;B[so]C[Not Ideal. Look for a better move...]))