(;SZ[19]AW[ea]AW[fa]AW[ia]AW[ja]AW[ka]AW[la]AW[ma]AW[na]AW[oa]AW[db]AW[eb]AW[ob]AW[pb]AW[cc]AW[dc]AW[hc]AW[ic]AW[lc]AW[mc]AW[pc]AW[bd]AW[gd]AW[hd]AW[jd]AW[kd]AW[md]AW[nd]AW[qd]AW[rd]AW[be]AW[de]AW[ge]AW[ie]AW[je]AW[le]AW[me]AW[oe]AW[re]AW[af]AW[df]AW[ff]AW[gf]AW[nf]AW[of]AW[pf]AW[rf]AW[ag]AW[cg]AW[dg]AW[fg]AW[hg]AW[ig]AW[jg]AW[kg]AW[lg]AW[pg]AW[sg]AW[ah]AW[ch]AW[gh]AW[hh]AW[lh]AW[mh]AW[oh]AW[qh]AW[sh]AW[ai]AW[ci]AW[ei]AW[fi]AW[gi]AW[ji]AW[mi]AW[oi]AW[pi]AW[qi]AW[si]AW[aj]AW[cj]AW[ej]AW[gj]AW[ij]AW[jj]AW[kj]AW[mj]AW[pj]AW[sj]AW[ak]AW[ck]AW[fk]AW[gk]AW[jk]AW[kk]AW[mk]AW[ok]AW[qk]AW[sk]AW[al]AW[cl]AW[dl]AW[gl]AW[hl]AW[ll]AW[ml]AW[ol]AW[pl]AW[ql]AW[sl]AW[am]AW[dm]AW[em]AW[hm]AW[im]AW[jm]AW[km]AW[lm]AW[om]AW[sm]AW[bn]AW[en]AW[fn]AW[nn]AW[pn]AW[rn]AW[bo]AW[co]AW[eo]AW[go]AW[ho]AW[jo]AW[ko]AW[mo]AW[oo]AW[po]AW[ro]AW[cp]AW[fp]AW[gp]AW[ip]AW[jp]AW[lp]AW[mp]AW[np]AW[rp]AW[dq]AW[gq]AW[hq]AW[jq]AW[kq]AW[pq]AW[qq]AW[rq]AW[dr]AW[er]AW[mr]AW[nr]AW[or]AW[fs]AW[gs]AW[hs]AW[is]AW[js]AW[ks]AW[ls]AB[ga]AB[ha]AB[fb]AB[hb]AB[ib]AB[jb]AB[kb]AB[lb]AB[mb]AB[nb]AB[ec]AB[fc]AB[gc]AB[jc]AB[kc]AB[nc]AB[oc]AB[cd]AB[dd]AB[fd]AB[od]AB[pd]AB[ce]AB[ee]AB[fe]AB[he]AB[ke]AB[pe]AB[qe]AB[bf]AB[cf]AB[ef]AB[hf]AB[if]AB[jf]AB[kf]AB[lf]AB[mf]AB[qf]AB[bg]AB[eg]AB[mg]AB[ng]AB[og]AB[qg]AB[rg]AB[bh]AB[dh]AB[eh]AB[fh]AB[ih]AB[jh]AB[kh]AB[nh]AB[rh]AB[bi]AB[di]AB[hi]AB[ki]AB[li]AB[ni]AB[ri]AB[bj]AB[dj]AB[hj]AB[lj]AB[nj]AB[oj]AB[qj]AB[rj]AB[bk]AB[dk]AB[ek]AB[hk]AB[ik]AB[lk]AB[nk]AB[rk]AB[bl]AB[el]AB[fl]AB[il]AB[jl]AB[kl]AB[nl]AB[rl]AB[bm]AB[cm]AB[fm]AB[gm]AB[mm]AB[nm]AB[pm]AB[qm]AB[rm]AB[cn]AB[dn]AB[gn]AB[hn]AB[in]AB[jn]AB[kn]AB[ln]AB[mn]AB[qn]AB[do]AB[io]AB[lo]AB[qo]AB[dp]AB[ep]AB[op]AB[pp]AB[qp]AB[eq]AB[fq]AB[iq]AB[lq]AB[mq]AB[nq]AB[oq]AB[fr]AB[gr]AB[hr]AB[ir]AB[jr]AB[kr]AB[lr]LB[ab:No]LB[ba:Yes]C[Black to play. Can Black win the game? Please play at Yes (B19) if you think so, or No (A18) if not.FORCE]GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]KM[6.50]PW[White]PB[Black] (;B[ab]LB[ab:No]LB[ba:Yes];W[ii]C[Too bad. You could have won, but not now.]) (;B[ba]LB[ab:No]LB[ba:Yes];W[ab]LB[ab:No]LB[ba:Yes]C[Get the best result! Please do not play unnecessary forcing moves in the corners, they are not covered.] (;B[ii];W[jj];B[fo];W[kj];B[hp];W[jk];B[kp];W[ij];B[no];W[ji] (;B[kk];W[jj];B[on];W[kj];B[pk];W[jk];B[ph];W[ij] (;B[ji];W[jj];B[ne];W[kj];B[ld];W[jk] (;B[ij];W[jj];B[id];W[kj] (;B[gg];W[jk]C[You lost the capturing race in the middle, but captured enough of the white group to win the game. This is the best solution.RIGHT]) (;B[jk];W[jj] (;B[gg];W[kj]C[You lost the capturing race in the middle, but captured enough of the white group to win the game. This is the best solution.RIGHT]) (;B[kj];W[jj];B[gg]C[You lost the capturing race in the middle, but captured enough of the white group to win the game. Good thing there aren't any other points on the board, otherwise I'd dock you from ending in gote (and one point worse than the best solution, depending on ruleset).RIGHT]))) (;B[id];W[ij];B[gg]C[You lost the capturing race in the middle, but captured enough of the white group to win the game. Good thing there aren't any other points on the board, otherwise I'd dock you from ending in gote (and one point worse than the best solution, depending on ruleset).RIGHT])) (;B[ne];W[ji];B[ld];W[gg];B[id]C[You could have gotten more.])) (;B[on];W[kk];B[pk];W[gg];B[ph];W[id];B[ne];W[ld]C[You could have gotten more.])) (;B[fo];W[ii];B[hp];W[gg];B[kp];W[id];B[no];W[ld];B[on];W[ne];B[pk];W[ph]C[White saved enough of the group to win the game. :-(])))