(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[AGA]SZ[19]KM[6.50]TM[3600]OT[3x30 byo-yomi]
GN[BGA Online Congress]PW[seequ]PB[balagtas]WR[28k]BR[?]DT[2021-02-28]PC[OGS: https://online-go.com/game/31553022]C[Review by Antti

Most likely the most valuable thing that you can infer from this game+review is a kind of strategical outlook on what's happening in the game. Now that your shapes are starting to be more or less accurate, next you need to start paying attention to what you are doing with them – attacking/defending and influence/territory are among the most notable qualities.]RE[B+18.50]
;B[pd]
;W[dp]
;B[pq]
;W[dc]
;B[fq]
;W[cn]
;B[jp]
;W[po]
;B[qm]
;W[on]
;B[qp]
;W[qo]
;B[ro]
;W[rn]
;B[rp]
;W[qn]
;B[pm]LB[qj:B][nq:A]C[This extension is definitely an overplay – black needs to play at around A instead, probably followed by a white move such as B.]
;W[oq]C[White is happy to get this attachment.]
;B[or]
;W[nq]
;B[nr]
;W[mq]
;B[mr]C[This crawl furthermore helps the local white shape, and should have been omitted.]
;W[lq]LB[qj:E][nl:D][pp:A][kq:C][qr:B]C[For white, it looks slightly better to play A-B-C instead; C makes black busier on the lower side, and probably will get sente for white to play a move such as D or E.]
;B[nl]
;W[pp]
;B[qr]
;W[pk]
;B[om]
(;W[ko]LB[rl:A]C[White could actually link up with A, and it would be directionally good as well. See variation.]
;B[kp]
;W[lo]
;B[lp]
;W[mp]
;B[jo]
;W[km]
;B[nn]
;W[no]
;B[mn]
;W[mo]
;B[rm]LB[pk:A][pm:B]C[This block is really big – now it's the white A stone that is starting to lose its purpose, rather than the black B wall.]
;W[jn]
;B[in]
;W[im]
;B[hn]
;W[hm]LB[qf:B][gp:A]C[If possible, white should like to omit this push. This is because white could also consider a move at around A, which severely attacks black's lower-side shape.

Even if A does not look good right away, it is still something that should be preserved for later if possible. In that sense, for example, white might switch to the right side with B for now, since his lower-side group is already strong enough to tenuki from.]
;B[gn]
;W[hp]
;B[gp]
;W[gm]
;B[fn]
;W[fm]LB[cg:A]C[Now black easily gets sente from the lower side, and can play for example at around A to nullify most of the value of the white wall.]
;B[em]C[...or not! Black prefers a straightforward kind of fighting game.]
;W[en]
;B[el]
;W[dr]
;B[er]
;W[dq]LB[dn:C][ep:B][eq:A]C[Here it was better for white to play A, since black B, white d3, and black C does not work.]
;B[dn]
;W[eo]
;B[cm]
;W[co]LB[dm:C][bn:A][do:B]C[A instead is somewhat better shape, since eventually white will exchange B for C.]
;B[ce]LB[ci:A]C[This approach is very likely an overplay, and black should probably be playing something like A instead.]
(;W[ed]LB[di:A]C[White should like to pincer at around A, initiating a fight on the left side where his position is strong.

See variation.]
;B[df]LB[dh:A]C[Something like black A instead seemed proper.]
;W[bm]LB[di:A]C[White's A pincer was still strong, since it would have split black into two attackable groups. B7 is among the most uninteresting moves for white on this board – white is actually helping the attackable left-side black stones to become strong.]
;B[bl]
;W[cl]
;B[ck]
;W[dm]
;B[dl]
;W[cm]
;B[dj]C[Black can be happy with this result.]
;W[nc]
;B[kd]
;W[qf]
;B[nd]
;W[qd]
;B[qc]
;W[rc]
;B[qe]
;W[rd]
;B[pe]
;W[re]
;B[qb]
;W[qh]
;B[qj]
;W[pj]LB[ic:C][qh:A][sn:B][hq:D]C[Since the main white group of A is already alive and strong, and the right-side black group is safe because of the B connection, this push looks premature. For now, white should either play the large checking extension of C, or possibly initiate the lower-side fight with D.]
;B[qi]
;W[pi]
;B[rh]
;W[rg]
;B[ph]
;W[qg]
;B[oh]
(;W[ri]LB[qk:A]C[A instead seems preferable. See variation.]
;B[rj]
;W[sh]LB[qk:A]C[Now black has prepared a fighting move at A for later.]
;B[gc]
;W[cd]
;B[fe]
;W[fc]LB[bb:E][db:B][eb:A][fb:F][bd:D][be:C][rk:G][hq:H]C[This move is not needed for life – even if black gets to force A-B-C-D, white lives because of the miai of E and F.

Among other ideas, white could have considered G and H here.]
;B[fb]
;W[eb]
;B[fd]LB[gb:B][ec:A]C[This black atari is annoying for white; connecting at A now feels passive, but B starts a difficult ko fight.]
;W[gb]
;B[ec]
;W[hq]
(;B[ir]LB[io:A]C[Black probably had to connect at A instead. See variation.]
;W[fc]
;B[jl]
;W[jm]
;B[ec]
;W[io]C[This cut is severe; now something black will die.]
;B[hr]
;W[fc]
;B[hb]LB[fa:B][hc:C][ip:A]C[Instead of this move, black should have compromised with A-B-C.]
;W[fa]
;B[hc]
;W[jq]LB[fa:A][jp:B]C[Now the game is decidedly good for white, since he got both the A ponnuki and the B stones.]
;B[iq]
;W[ip]
;B[gq]
;W[kq]
;B[jr]
(;W[md]LB[jh:A][nj:B]C[At this part of the game, now that all the white groups on the board are strong and white is ahead, the main threat white has left is for the A area to become a large black framework.

With that in mind, the easiest course of action for white would probably have been to play B instead. See variation.]
;B[ne]
;W[nj]
;B[lk]
;W[nh]
;B[ng]
;W[mh]
;B[oi]
(;W[rk]LB[oj:A]C[This cut seems like a semi-critical mistake, since now black gets to build a big centre with the A cut.

White needed to play A instead. See variation.]
;B[oj]
;W[ok]
;B[nk]
;W[ni]
;B[og]
;W[ee]LB[ki:A][mk:B]C[This move is too disconnected from the centre – white still needs to try a living sequence with something like A, but now the situation is a lot harder because the B cut doesn't exist anymore.]
;B[ef]
;W[ff]
;B[gf]
;W[fg]
;B[gg]
;W[fh]
;B[gh]
;W[fi]
;B[gi]
;W[cg]
;B[dh]
;W[fj]
;B[ch]
;W[gj]
;B[hj]C[Black played the last sequence perfectly, and now it's too late for white to do anything about the centre.]
;W[hk]
;B[ij]
;W[kk]
;B[kj]
;W[be]
;B[bg]
;W[rb]
;B[oc]
;W[ke]LB[ff:A]C[This attachment has the right kind of attitude, but the timing for such moves was before the A cut.]
;B[je]
;W[lj]
;B[mj]
;W[li]
;B[kl]
;W[ki]
;B[jj]
;W[jf]
;B[kf]LB[le:A]C[Black A instead would have been a lot cleaner.]
;W[le]
;B[lf]
;W[jd]
;B[ie]
;W[kc]
;B[jc]
;W[jb]
;B[id]
(;W[ha]LB[lb:A]C[There may have been some magic left at A. See variation.]
;B[kb]C[After this cut, the game is starting to be over. After this, I've only marked larger endgame mistakes.]
;W[ia]
;B[lc]
;W[cf]
;B[bf]
;W[de]
;B[dg]
;W[bk]
;B[bj]
;W[al]
;B[aj]
;W[ik]
;B[jk]
;W[qa]
;B[pa]
;W[ra]
;B[ob]
;W[eq]
;B[fr]
;W[go]
;B[fo]
;W[fp]
;B[ep]
;W[qq]
;B[rq]
;W[fp]
;B[rl]
;W[qk]
;B[ep]
;W[mf]C[This move is most likely not a ko threat.]
;B[me]C[However, black can even afford to answer.]
;W[fp]
;B[ce]
;W[ho]LB[cf:A]C[Black actually has very few threats remaining overall, and so white might have considered trying to maximise his profit by playing A.]
;B[cf]LB[ad:C][bd:B][ae:A]C[Black should play A-B-C, etc., in sente.]
;W[bd]
;B[ds]
;W[cs]
;B[es]
;W[cr]
;B[kr]
;W[ek]
;B[dk]
;W[lm]
;B[fl]
;W[gk]
;B[ib]
;W[ja]
;B[ka]
;W[ga]
;B[sn]
;W[lr]
;B[ls]
;W[mm]
;B[nm]
;W[ml]
;B[mk]
;W[af]
;B[ag]
;W[ae]
;B[ak]
;W[bl]
;B[pn]
;W[oo]
;B[pf]
;W[sl]
;B[sm]
;W[sk]
;B[ln]
;W[ei]
;B[di]
;W[il]
;B[gl]
;W[ej]
;B[ll]
;W[eh]
;B[eg]
;W[fk]
;B[hl]
;W[kn]
;B[pl]
;W[ql]
;B[ol]
;W[sj]
;B[pg]
;W[]
;B[]LB[fc:B][bm:A][hq:C]C[B+18.50

What stands out to me the most in white's play in this game is that he was basically all the time on the defensive. My hypothesis is that black's overaggressive play in the early game that 'stuck' to white's groups got white in a kind of defensive mode, in which he then remained for the most of the game. However, from our Discord exchange white did not think this is the case, and he had explanations for his defensive moves; so if my above hypothesis is true, white's defensiveness would have to have been subconscious. As for how plausible this is, I'll leave for white himself to evaluate.

Note that from the above it should not be inferred that 'defensive' is 'bad', per se; there are times when defending is good and times when one should be more active. Probably the clearest 'bad defensive moves' in this game would have to be A and B, which are strictly speaking not needed at all (for defence), and just serve to strengthen the opponent's shape in their vicinity.

In general, especially in amateur games with (relatively) short time limits, the aggressive player actually has an advantage; assuming that reading mistakes will happen no matter what, the attacker's reading mistake will probably only cost some territory or influence, while the defender's reading mistake more often leads to a group dying. This is one fairly good reason why one shouldn't opt for completely defensive play, and should try to balance between attacking and defending. In this game, too, it was only white's successful attack with C that really got white ahead at one point.

The review ends here!])
(;W[lb]LB[ha:A]C[White aims for A next.]
;B[ib]C[If black just blocks...]
;W[mc]C[...this group should get a ko for life.]
;CR[lc]AE[ib][mc]AB[lc]PL[W]
;W[kb]C[Like this, too, white will not die unconditionally.]))
(;W[oj]
;B[qk]C[Let's assume black goes for the attack.]
;W[ni]
;B[og]
;W[ki]C[Although white cannot connect his group out anywhere, it should be far easier for the group to live than it may look like at first.]
;B[jj]
;W[ji]
;B[ij]
;W[ii]LB[mk:A]C[These pushes are actually severe on black because of the remaining cutting point at A.]
;B[hj]
;W[lf]
;B[me]
;W[jf]
;B[lj]
;W[li]
;B[mj]
;W[hg]C[For example this group should live already.]))
(;W[nj]LB[qm:A]C[This move affects the centre and turns the black A stones into a target.]
;B[mi]LB[md:C][ne:D][nh:B][lk:A]C[If my model of this black player is accurate, he will do something like this.

Or else A like in the game, but then white B looks even better here when white hasn't reinforced black's shape with C-D.]
;W[mj]
;B[li]
;W[lj]
;B[kj]
;W[kk]LB[pm:A]C[This seems ot be as far as black can push. Now the A group has to be defended.]
;B[sn]
;W[ki]C[White's last task is to break black's centre apart.]
;B[jj]
;W[kh]
;B[lg]
;W[ii]
;B[ij]
;W[hj]C[Something like this should work – it seems like the three stones are dead.]))
(;B[io]
;W[gr]LB[iq:F][jq:C][kq:D][ir:B][jr:A][kr:E]C[White A instead doesn't seem to kill black. Black resists with B-C-D-E-F.]
;B[kr]LB[ip:F][iq:E][jq:D][fr:A][ir:C][jr:B]C[If black tries A instead, white B is then difficult to stop. This time white C will then be countered by D-E-F.]
;W[fr]
;B[ir]C[This kind of a result can probably be expected; black lives, but loses his territory.]))
(;W[qk]
;B[rk]
;W[rl]
;B[rj]
;W[sm]
;B[ql]
;W[sl]
;B[sk]
;W[sn]
;B[si]
;W[sg]
;B[sh]
;W[nj]LB[nl:A]C[If black tries to fight like this, the A group gets under heavy pressure.]))
(;W[di]
;B[ed]C[This black player will definitely press.]
;W[ec]
;B[fd]
;W[gc]
;B[gd]
;W[hc]
;B[fi]C[And probably play something like this cap.]
;W[ck]
;B[bl]
;W[fj]C[However, this fight is clearly easier for white than for black.]))
(;W[rl]
;B[rm]C[Let's see what happens if black tries to cut.]
;W[sm]
;B[ql]
;W[qk]
;B[rk]
;W[sl]
;B[rj]
;W[qi]
;B[ri]
;W[qh]
;B[rh]
;W[qg]
;B[rg]
;W[qf]
;B[rf]
;W[qe]LB[on:A]C[Black's loss on the right side is enormous like this – now, unless black can actually kill the white A group, the game is completely good for white. Of course, killing A is still impossible.]
;CR[qk]AE[qe][qf][rf][qg][rg][qh][rh][qi][ri][rj][rk][ql][sl]AB[qk]C[This attachment is also an option.]PL[W]
;W[ql]
;B[pl]
;W[qj]
;B[rk]
;W[sl]
;B[rj]
;W[qi]
;B[ri]
;W[qh]
;B[rh]
;W[qg]
;B[rg]
;W[qf]
;B[rf]
;W[qe]C[Ultimately, this is not very different from before. Black's crawling is just not very promising.]
;CR[rl]AE[qe][qf][rf][qg][rg][qh][rh][qi][ri][qj][rj][qk][rk][pl][ql][sl][rm][sm]LB[qh:A][nl:B]C[If black however cannot cut this white shape, then white will just soon play A himself to erase all local aji; and also, strategically the black B stones turn out to be completely wasted, more like dead weight that black has to look after.]))
