(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]
GN[8 august 2026]PW[Cris Bratu]PB[Laurentiu Nicola]WR[5k]BR[5k]PC[https://online-go.com/review/1751690]RE[W+0.50]
;B[qp]
;W[cc]
;B[cp]
;W[jq]
;B[nq]
;W[eq]
;B[hq]C[In this position, white has an opportunity to create a wall, and then attack black towards the wall...]
(;W[jo]
;B[ho]
;W[cq]
;B[dp]
;W[dq]
;B[ep]
;W[fq]
;B[gp]
;W[fp]
;B[fo]
;W[bp]
;B[bo]
;W[bq]
;B[cn]
;W[qc]
;B[jc]
;W[ci]
;B[dj]
;W[cj]
;B[dk]
;W[ck]
;B[cl]
;W[di]
;B[fj]
;W[ei]
;B[ed]
;W[dd]
;B[ec]
;W[ee]
;B[fe]
;W[ef]
;B[pj]
;W[lc]
;B[je]TR[je][fj][pj][ho]C[Black has already got quite a lot of strength in the center. And it's getting a bit dangerous for two white stones on the bottom.]
(;W[qg]
;B[pf]
;W[pg]
;B[of]
;W[re]
;B[oc]
;W[od]
;B[pd]
;W[nd]
(;B[qf]
;W[pc]
;B[rf]TR[pg][qg]C[Now white doesn't need to worry about the upper group.
The two marked stones don't give away too many points and can be sacrificed and...]
(;W[oh]
;B[ng]
;W[ni]
;B[nk]
;W[li]
;B[lk]
;W[jm]TR[oh]C[White decided to escape by playing the marked stone and now the game gets difficult for white again (there are two groups, which white needs to defend).]
;B[kj]
;W[pi]
;B[qj]
;W[oj]
;B[ok]
;W[rg]
(;B[qd]
;W[qi]
;B[lf]LB[lq:A]C[If white plays now at A - there would be not much profit left for black (black was attacking two weak groups, so there should be some profit for him).]
;W[rd]
;B[lq]
;W[ln]C[White is basically surrounded, so black's job is to weaken white's potential for making eyes...
The main idea is: the less sente moves for the opponent, the easier to kill.]
(;B[mo]
;W[lo]
;B[lp]
;W[mn]
;B[jp]C[It seems unnecessary...]
;W[kp]
;B[ip]
(;W[kq]
;B[no]
;W[ir]
;B[hr]
;W[lr]
;B[mr]
(;W[kr]
(;B[nn]TR[kp][kq]C[Because black made white add the two marked stones, the current move (O6) is more urgent, because if black played somewhere else and white would have played at O6, white would get the follow-up (P5) in sente.]
;W[in]
;B[hm]
;W[rj]
;B[rk]
;W[ri]
;B[im]
;W[jl]
;B[ki]
;W[og]
;B[ne]
;W[fi]
;B[gj]
;W[ff]
;B[ge]
;W[rl]
;B[ql]
;W[sk]
;B[rm]
;W[qk]
;B[qm]
(;W[pk]C[This move is big, but it's gote. I would recommend playing first on the top in sente and then capturing these two stones...]
;B[nm]
;W[ll]
;B[ml]
;W[kl]
;B[cb]
;W[bb]
;B[dc]
;W[cd]
;B[md]
;W[nc]
;B[mc]
;W[mb]
(;B[nb]C[Unnecessary exchange]
;W[ob]
;B[lb]
;W[na]
;B[kb]
;W[sm]
;B[rn]
;W[sn]
;B[so]
;W[sl]
;B[db]C[Defense in the lower-right is bigger, because it gives the opponent a continuation of destroying more and more.]
;W[ro]
;B[qo]
;W[sp]
;B[rp]
;W[sq]
;B[so]
;W[me]
;B[ld]
;W[ro]
;B[ba]
;W[so]
;B[rr]
;W[ab]
;B[bl]
;W[bk]
;B[es]
;W[ds]
;B[fs]
;W[er]
;B[hs]
;W[io]
;B[is]
;W[iq]
;B[hp]
;W[js]
;B[cs]
;W[bs]
;B[dr]
;W[cr]
;B[ds]
;W[ar]
;B[hn]
;W[rq]
;B[qq]
;W[pl]
;B[pm]
;W[ol]
;B[nl]
;W[om]
;B[on]
;W[oe]
;B[nf]
;W[sf]
;B[gf]
;W[gi]
;B[hj]
;W[ej]
;B[ek]
;W[lh]
;B[kh]
;W[lg]
;B[mf]
;W[kg]
;B[ig]
;W[sr]
;B[rs]
;W[gg]
;B[hg]
;W[hi]
;B[ik]
;W[kk]
;B[lj]
;W[mj]
;B[nj]
;W[ao]
;B[an]
;W[ap]
;B[ak]
;W[aj]
;B[al]
;W[kf]
;B[ke]
;W[hh]
;B[la]
;W[jf]
;B[if]
;W[il]
;B[hl]
;W[jh]
;B[jg]
;W[jj]
;B[ji]
;W[ih]
;B[jk]
;W[ms]
;B[ns]
;W[ls]
;B[mh]
;W[nh]
;B[mg]
;W[mi]
;B[pe]
;W[mk]
;B[ij]
;W[ii]
;B[jj]
;W[os]
;B[nr]
;W[qr]
;B[pr]
;W[ma]
;B[mm]
;W[lm]
;B[fr]
;W[gr]
;B[gs]
;W[gq]
;B[le]
;W[ss]
;B[qs]
;W[qe]
;B[ca]
;W[bc]
;B[aa])
(;B[lb]C[If black starts with this cut, white would need to defend at O18 anyway (not to die with everything) - in this case it's only a point difference, but it's again the same pattern (you see a tesuji/weakness - it's great, but the order of moves while exploiting the weakness matters).]))
(;W[db]
;B[eb]
;W[kb]
;B[jb]
;W[pk]))
(;B[hs]C[There is a chance for a ko...]
;W[gr]
;B[is]
;W[js]
;B[iq])
(;B[gs]C[There is a chance for a ko...]
;W[fr]
;B[is]
;W[js]
;B[iq]))
(;W[js]C[This move is a bit safer, because there are less sente moves to do any problems to that group...]))
(;W[no]C[This atari is the key point - it gives more space for white in sente and makes the black shape worse.]))
(;B[nn]))
(;B[lq]LB[rg:C][pi:B][oj:A]C[White played some exchanges, which make black's shape much stronger (A and B) and then ended in gote (C).
If black tries to defend his own group in the top right, black will make the white's group (ABC) stronger.

However, the black's group in the top-right corner is much smaller than the bottom white's group.
I think now is the time for black to focus on killing the white's group on the bottom.]))
(;W[no]C[White has time now to defend the bottom group.]))
(;B[pc]TR[pg][qg]C[This connection is more important (a lot of points' difference) than cutting the marked two stones...]
;W[pe]
;B[qe]
;W[oe]
;B[qd]
;W[qf]
;B[rd]
;W[ng]C[Even if white kills two black stones in the center - it's a disaster for white (black took over the whole white's corner in sente).]))
(;W[lq]C[If white is confident he can make a living base on the bottom, it would be good to play a move like this.])
(;W[no]C[If white is not confident about the possibility of making a living base on the bottom, this move would be another choice.

The idea is that black will not be able to get a big profit by attacking these two white stones if white plays tenuki...]
(;AE[no])
(;AE[no]
;B[]
;W[qg]
;B[lq]
;W[jm]
;B[lm]TR[nm][om][pm][qm][nn][on][pn][qn]C[The least, which black can take, is a lot of points on the lower-right...]
;W[lo]LB[kn:B][kp:A]C[It's not so easy for white to destroy black's points on the right because of weaknesses in white's shape (sente moves for black).])))
(;W[do]
;B[co]
;W[dn]
;B[cm]
;W[ip]
;B[hp]
;W[ho]
;B[go]
;W[gn]C[It should be easier for white to get a good result this way.]))