(;FF[4]
CA[UTF-8]
GM[1]
GN[KataGo 7 komi self-play - game 111]
PC[https://online-go.com/review/1017234]
PB[KataGo]
PW[KataGo]
BR[9p]
WR[9p]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[7]
RU[NZ]

;B[qd]
;W[dp]
;B[cd]
;W[pq]
;B[fd]
;W[oc]
;B[qo]
;W[pe]
(;B[qe]
;W[pf]
(;B[rg]
;W[qp]
;B[po]
;W[np]
;B[ph]MA[qg]SQ[qm]TR[oq]C[This feels relatively good for black. There's some aji at P3 that he can use. The issue now is white can actually just play inside the R7 area. There's aji at R13, as well.

[All comments on this game by Tang Jie (CHN 5d), except bracketed comments by Maharani.\]]
(;W[kd]C[White backs off, makes sense. Black has gone for a really large portion of the right side and white had to defend.]
;B[cn]TR[kd]C[Black takes the move white should have taken if she had already had L16.]
;W[fq]
;B[md]C[Black jumps in immediately.]
;W[mc]
(;B[ic]TR[lc]C[Black can't play M17 immediately, but he shows his true colours.]
(;W[jc]C[White kicks to protect.]
;B[id]
;W[pi]
(;B[oh]
;W[oi]C[White plays a not so obvious move.]
(;B[nd]
;W[nc]
;B[ld]
;W[lc]
;B[ke]TR[oi]TR[pi]C[White's Q11 stones are now in trouble; they're just floating in mid-air.]
;W[on]TR[po]TR[qo]C[White is trying to put pressure on black's R5 stones.]
(;B[dj]TR[po]TR[qo]C[Black just ignores because it's not easy to defend the R5 stones.]
(;W[qm]C[And white swallows. There are other ways white probably could have swallowed.]
;B[lq]C[But black attacks with some other aji.]
(;W[mq]C[I didn't really expect the kick.]
(;B[ni]TR[mq]C[And then black tenukis. I'm not gonna pretend I understand all this stuff, but following up after the N3 kick is not ideal. Playing the hane at the head of two stones is pretty good.]
;W[nj]
(;B[mi]TR[ld]TR[md]TR[nd]TR[ke]TR[oh]TR[ph]TR[ni]C[Black defends. I guess if anything, black is still probably trying to preserve the strength of this group. It might be a little more nonchalant and this is just better shape; less aji.]
;W[je]C[White goes for the cut.]
;B[jd]
;W[kc]
;B[rp]C[Black plays an asking move.]
;W[rq]
;B[kf]
;W[mf]
;B[pc]
;W[pb]
;B[qb]
;W[pd]
;B[qc]
(;W[di]TR[pk]TR[ql]TR[pm]TR[no]TR[mp]C[This is a tactic that AlphaGo has used before. Essentially, white's settled some of the position. Black's added a few more moves on the bottom, kind of getting a feel of what aji is available; there are several attachments and a peep. So there's still a way to reduce white's area, but it may not be efficient; it just really depends on the type of game.]
(;B[ci]C[Playing on the bottom side is pretty straightforward.]
(;W[dd]C[We have the double attachment. This is more of an asking move rather than an actual joseki move. Black is too thick nearby.]
(;B[de]TR[ch]C[Black plays on the outside, defending against the C12 hane.]
;W[ej]C[And then white answers here.]
;B[mj]C[And I don't know why black tenukis. I don't understand it. I get that this is a really big move.]
(;W[dh]
;B[ch]
;W[dk]
;B[cj]
;W[fk]C[So white needs to just reduce the area and keep black low.]
(;B[le]C[Black connects, threatening to cut at P16.]
(;W[ck]C[White ignores. This tenuki sets in motion what type of game this is gonna be.]
(;B[jb]
;W[kb]
;B[hb]
;W[ja]
;B[ib]
;W[oa]TR[ja]TR[kb]TR[pb]TR[jc]TR[kc]TR[lc]TR[mc]TR[nc]TR[oc]TR[kd]C[Black settles the life of this white group.]
;B[el]
;W[ek]
(;B[dg]TR[bf]TR[cg]C[Black protects against white's double hane at C13/B14.]
;W[cc]C[White plays some more aji now that black is invested in the corner.]
(;B[bd]C[This looks like it does a similar thing as the variation.]
(;W[ee]C[The double hane makes sense.]
(;B[cf]C[Let's see what happens in the actual game.]
;W[ed]C[White connects.]
;B[fb]C[Black fixes.]
;W[fh]C[White needs to jump out.]
;B[ff]C[Black blocks.]
;W[gf]C[White attaches.]
;B[fe]C[And then black connects, so white went for the same thing as in the variation.]
;W[cp]TR[cc]TR[dd]TR[ed]SQ[od]TR[ee]TR[gf]TR[fh]SQ[ei]MA[el]MA[cn]C[Black's top left corner is kind of reduced. Technically, white gave up some stones, but has definitely added her own stones in the center area. Another big thing is that white has protected the E11 cut in sente; now she's come back to attack the C6 stones (while leaving the P16 cut). I like the way white's handled this.]
;B[gp]
;W[gq]
;B[ip]
;W[gn]
;B[hq]TR[el]TR[cn]C[Essentially, black has to give up on saving the C6 stones for now and live a little locally.]
;W[lp]
;B[kp]
;W[kq]
;B[lr]
;W[kr]
;B[lo]
;W[mp]
;B[pm]C[Black plays an asking probe, essentially creating more aji in the area.]
;W[ql]
(;B[ko]C[Black connects.]
;W[jq]C[Empty triangle.]
;B[gm]C[We see a lot of this crazy stuff. But this is not just a probe; it's also trying to get sente here.]
;W[fn]
;B[hn]
;W[hm]
(;B[gl]TR[in]SQ[jp]C[Black extends up instead of J6. He's successfully protected the K4 cut.]
(;W[em]
;B[im]C[Black has also captured this stone in a ladder; this makes sense. There are some problems with things like this.]
(;W[nk]
;B[gr]
;W[fr]
;B[nl]C[Oh, this is clever. Black is playing the nose tesuji at the head of two stones.]
(;W[ol]
;B[om]C[These are good forcing moves. When you play go, just remember, not everything needs to be saved.]
;W[nm]
;B[ml]
;W[pl]C[White gets to capture.]
;B[mm]C[But black gets this really thick outside.]
;W[nn]TR[om]C[Black used the extra stone at P7 to gain some more forcing moves. There's a really good proverb: "Sacrifice an extra stone to gain forcing moves", and this is an excellent way of doing it. It's not easy to see.]
;B[od]C[And black eventually comes back here to cut these stones off.]
(;W[hj]C[White kind of forces black to capture.]
;B[hl]
(;W[qi]C[White protects. I think at this point, it's all straightforward endgame, and both players are just gonna fight for the maximum amount of points. The really interesting part is the fights that happened.]
;B[qa]
;W[ma]
;B[bk]
;W[bl]
;B[aj]
;W[bm]
;B[ii]
;W[hi]
;B[fl]
;W[dl]
;B[ih]
;W[ij]
;B[jj]
;W[hg]
;B[rh]
;W[ri]
;B[ir]
;W[go]
;B[fp]
;W[ep]
;B[en]
;W[eo]
;B[er]
;W[eq]
;B[mr]
;W[nr]
;B[fs]
;W[dr]
;B[si]
;W[sj]
;B[pp]
;W[qq]
;B[no]
;W[mo]
;B[mn]
;W[oo]
;B[sh]
;W[ho]
;B[io]
;W[rj]
;B[ik]
;W[bj]
;B[bi]
;W[hp]
;B[iq]
;W[mk]
;B[lk]
;W[jf]
;B[jg]
;W[qh]
;B[qg]
;W[he]
;B[hd]
;W[hh]
;B[ig]
;W[if]
;B[kj]
;W[es]
;B[fg]
;W[gs]
;B[gh]
;W[eh]
;B[pn]
;W[op]
;B[ok]
;W[oj]
;B[gg]
;W[gi]
;B[ge]
;W[hf]
;B[gk]
;W[gj]
;B[fi]
;W[al]
;B[dm]
;W[dn]
;B[cm]
;W[ei]
;B[nb]
;W[mb]
;B[ob]
;W[na]
;B[eg]
;W[bn]
;B[hr]
;W[ak]
;B[fm]
;W[en]
;B[ia]
;W[ka]
;B[cl]
;W[bj]
;B[pa]
;W[ob]
;B[bk]
;W[fj]
;B[bj]
;W[jp]
;B[jo]
;W[ls]
;B[js]
;W[ie]C[KataGo 50 %

-- chat --
Maharani: Video review by Tang Jie (CHN 5d): https://www.twitch.tv/videos/1825745505
]
)(;W[jj]C[And white can jump in further.

[KataGo gives this move -31 pp for white and only gives it 1 visit out of 239,792 playouts.\]]
))(;W[kj]C[Now I think white needs to come back.

[KataGo gives this move -32 pp for white and only gives it 1 visit out of 167,707 playouts.\]]
)(;W[jj]C[And do something about the center here.

[KataGo gives this move -23 pp for white and only gives it 1 visit out of 167,707 playouts.\]]
))(;W[mr]C[Because if black gets one more move...]
;B[mk]C[... now he's playing hane at the head of two stones on both sides, which is super powerful.]
)(;W[mk]C[If white plays something like this...

[KataGo gives this move -1.6 pp for white.\]]
(;B[nm]C[... black can now try saving one or both sides.]
;W[pn]
;B[pl]C[Not sure how this works; I might be missing something.]
)(;B[pl]C[Maybe black plays here?]
;W[pk]
;B[qk]C[And then this.]
;W[pn]
;B[nm]
;W[qj]C[If white plays here...]
;B[qn]C[... black obviously has this move.]
;W[rk]C[White needs to capture.]
;B[oo]
;W[nn]
;B[no]
;W[mn]
;B[mo]
;W[mm]TR[po]TR[qo]TR[rp]C[Black saving the Q5 stones is pretty big.]
(;B[oq]TR[nl]TR[pl]TR[nm]TR[pm]C[Black loses O7, but gets to connect up and then play something like this.]
;W[or]C[This is really interesting.]
;B[pp]
;W[qq]
;B[nr]C[Especially with this.]
;W[mr]C[It's a little dangerous; I'm not quite sure.]
)(;B[mr]TR[lq]TR[lr]C[White hasn't captured these stones yet.]
))(;B[nn]C[[KataGo variation.\]]
;W[mn]
;B[qa]
;W[od]
;B[nm]
;W[qh]
;B[qg]
;W[lk]
;B[mo]
;W[no]
;B[pl]
;W[pk]
;B[qk]
;W[qj]
;B[rk]
;W[hl]
;B[lm]
;W[il]
;B[oq]
;W[or]
;B[pg]
;W[ne]
;B[nr]
;W[mr]
;B[op]
;W[ns]
)))(;W[jk]C[If white just plays here...]
;B[hl]C[... black does need to come back and fix at one point, which eventually I believe white forces.]
))(;W[jp]C[Because white can't really play this.]
;B[jo]
;W[io]
;B[in]C[Black has already protected this.]
)(;W[in]C[If white plays here...

[KataGo gives this move -27 pp for white.\]]
;B[ho]
(;W[jp]
;B[jo]
;W[io]
;B[im]
;W[jn]
;B[jm]
;W[kn]
;B[ln]
;W[km]C[... this is a ladder, and black is pretty much protected there.]
;B[kl]
;W[lm]
;B[mm]
;W[ll]
;B[lk]
;W[ml]
;B[nl]
)(;W[em]C[[KataGo variation.\]]
;B[im]
;W[nk]
;B[hl]
;W[od]
;B[eo]
;W[dm]
;B[nl]
)))(;B[in]C[[KataGo gives this move -13 pp for black.\]]
;W[nk]C[[KataGo variation.\]]
;B[fp]
;W[ep]
;B[gl]
;W[em]
;B[nm]
;W[nn]
))(;B[jq]C[How black is handling this bottom portion is pretty important. He isn't giving white any unnecessary forcing moves. For example, if black plays here first, it doesn't do any good for black.

[KataGo gives this move -14 pp for black.\]]
;W[ko]
;B[jp]
(;W[mr]C[White probably takes this.]
;B[jr]
;W[ls]
(;B[kn]TR[ko]C[And maybe black gets away with this? But I imagine this is probably good for white, especially if she can run L5 out.]
;W[jo]
;B[in]
;W[ln]C[With something like this.]
;B[io]TR[lo]C[Black is allowing white to capture M5.]
;W[mo]
(;B[nl]C[That means later black needs to come back and kind of fix this. I don't know if this particular thing works.]
)(;B[nk]C[But black probably has to play here.]
)(;B[ok]C[Or something like this to threaten a little bit more.]
;W[go]C[If black doesn't answer locally with this group, potentially when white plays here...]
;B[fp]
;W[ep]
;B[fo]
;W[fn]
;B[eo]
;W[en]
;B[do]
;W[bm]C[... maybe black gets to connect up, but it's not fully alive.]
;B[jn]C[So even if we get into this position...]
;W[ir]C[... white still has the ability to play here...]
;B[hr]
;W[js]C[... and take away the eyespace, so that's pretty big.]
)(;B[go]C[So black also needs to answer locally with this group. It's entirely possible that white won't even answer G5.]
;W[fn]TR[pm]TR[po]TR[qo]TR[rp]C[Locally, black can be alive, but is it really that great? I'm not sure. Also, if he plays this way, white's going to eliminate a lot of the Q5 aji.]
;B[gr]C[And technically, black still has to answer here.]
;W[fr]
;B[ok]
))(;B[ln]C[And if black plays here...]
;W[jn]TR[gp]TR[ip]TR[jp]TR[kp]TR[hq]TR[jq]TR[jr]C[... this is just a fight for life.]
))(;W[ho]C[[KataGo variation.\]]
;B[qa]
;W[ma]
;B[hp]
;W[fp]
;B[nk]
;W[ol]
;B[od]
)))(;B[ed]C[I'm not sure what I'm missing. Maybe this atari is just not necessary? I guess white gets a little more extra forcing moves.

[KataGo gives this move -7.7 pp for black.\]]
(;W[df]
(;B[dc]
(;W[eg]
;B[cg]
(;W[cf]C[This doesn't work for white.]
)(;W[ce]C[So perhaps, white makes this exchange?]
;B[cf]
;W[dd]
;B[be]
;W[de]
;B[fe]
;W[ef]
;B[eh]
;W[ei]
;B[fh]C[I'm confused.]
))(;W[cg]C[So white exchanges here.]
;B[eg]C[But this also doesn't work for white.]
))(;B[ce]C[[KataGo variation.\]]
;W[eg]
;B[cg]
;W[cp]
;B[ei]
;W[ip]
;B[fi]
;W[gj]
;B[in]
;W[gn]
;B[gm]
;W[hm]
))(;W[dc]C[If white still connects...]
;B[cf]C[... black can still play here.]
(;W[fb]C[White probably needs to come back and play here. Is this supposed to be a problem for black?]
;B[gb]
(;W[fc]C[White needs to make this exchange first, it's the only response she can do.]
(;B[gd]TR[gb]TR[hb]TR[ib]TR[jb]TR[ic]TR[ed]TR[fd]TR[id]TR[jd]C[Maybe the issue is some serious aji with these outside stones?]
;W[bc]C[So now, white gets to live in the corner locally.]
)(;B[bc]C[If black plays this way...]
(;W[gd]
;B[fe]
(;W[ge]C[... we do get this position.]
;B[gc]
;W[ff]
;B[ef]
;W[ec]
;B[ee]
;W[ie]C[And white can play here. The issue with the way this is set up...]
;B[he]
;W[hd]
;B[hf]
;W[ga]C[... is, it doesn't really fix anything for white.]
)(;W[gc]C[So perhaps, white gets to play this one?]
;B[ge]
;W[he]C[And then force here like this?]
;B[hd]
(;W[ie]
;B[hf]C[This one doesn't work for black.]
)(;W[hf]C[White can play this one.]
;B[ie]C[Black has to come out.]
;W[ef]C[And then white has this.]
;B[ff]TR[fb]TR[cc]TR[dc]TR[fc]TR[gc]TR[dd]TR[gd]C[But locally, white is still dead in the corner.]
)))(;W[bb]C[Maybe some witchcraft for white?]
;B[ab]
;W[gd]
;B[fe]
(;W[ec]C[For the sake of argument, if white connects...]
;B[gc]C[... and we have something like this...]
;W[db]
;B[ca]
;W[ba]C[... this isn't alive either...]
;B[ea]
;W[fa]
;B[da]SQ[ca]SQ[ea]TR[cb]TR[eb]C[... because white needs to connect to kill these three stones, which makes only one eye.]
)(;W[ge]
;B[gc]
;W[gf]C[But white can do this; that's sente, first of all.]
;B[ff]
;W[fg]
(;B[eg]
;W[ie]C[And then white can play here.]
;B[he]C[Even if black tries something like this...]
;W[hf]
;B[hd]
;W[if]C[... he can't do that.]
;B[ec]
)(;B[ef]C[Actually, black needs to take first.]
;W[ie]SQ[bb]SQ[fb]SQ[cc]SQ[dc]SQ[fc]SQ[dd]MA[ed]CR[gd]TR[ld]TR[md]TR[nd]CR[ge]CR[je]TR[ke]TR[le]CR[gf]TR[kf]CR[fg]C[Then white can play here. So essentially, I think what happens with the aji is that white actually is going to get some outside stones, and possibly the M15 stones are getting under attack. The corner is technically still black's. Those are just my thoughts right now; very difficult position to handle as white. I think E16 is working for black.]
;B[ec]C[Black can just play here directly.]
;W[eb]
;B[db]
;W[cb]
;B[da]
(;W[jg]C[And then white jumps?]
)(;W[gh]TR[da]SQ[bb]SQ[cb]TR[db]SQ[eb]SQ[fb]MA[gb]MA[hb]MA[ib]MA[jb]SQ[cc]SQ[dc]SQ[fc]MA[gc]MA[ic]SQ[dd]MA[id]MA[jd]C[Or white plays something like this, and black had to play in his own territory to capture the D17 stones in order to save the J18 group.]
;B[od]C[But that doesn't disqualify black from just cutting here directly, so I'm not a hundred percent sure, but maybe there's a good reason.]
(;W[lg]
)(;W[nh]C[Perhaps white even just cuts here directly? I wanna cut, but it doesn't work.]
;B[mh]
(;W[ng]
;B[qh]
)(;W[qh]C[If white plays here...]
;B[qg]C[... that doesn't work.]
))))))))(;W[ab]C[Maybe there is a special tesuji for white, for example something like this?]
;B[eb]
(;W[db]C[Here, and then...]
;B[fa]
;W[ba]C[... here?]
;B[bc]
;W[bb]
;B[da]
;W[ca]C[But this wouldn't work.]
)(;W[ca]C[And white can't play here...]
;B[bb]
;W[bc]
;B[ba]C[... because this just doesn't work, either.]
))(;W[db]C[If white tries this...]
;B[bb]C[... black has this one as a response.]
)(;W[bc]C[And if white tries this...]
;B[eb]
;W[db]
;B[fa]C[... this still doesn't work.]
;W[bb]
;B[ca]
;W[da]C[Locally, this is also just dead.]
;B[ac]
;W[ab]
;B[ba]
))(;W[fh]C[Maybe it's possible that white plays here first and it adds a little bit to the corner where black needs to now add a move, but I doubt it.]
))))(;W[dc]C[So if white plays here...

[KataGo doesn't give this move any visits out of 45,200 playouts.\]]
;B[bc]
;W[ee]
;B[ed]
;W[ce]
;B[df]
(;W[be]
;B[bb]C[... we get this.]
)(;W[bb]C[Or perhaps this.]
;B[ab]C[Black can play here first.]
;W[be]
;B[cb]C[The issue with something like this, of course...]
;W[ba]
;B[ca]
;W[ad]
;B[aa]
;W[bb]
;B[ba]
;W[ae]
;B[eb]C[... is, does this kill white?]
;W[ac]C[White has to play here first.]
;B[db]
;W[bb]C[Into this.]
;B[cg]C[And then black protects.]
;W[bg]
;B[ag]C[And of course, we have this nice tesuji.]
;W[bh]
;B[bi]
;W[ah]
;B[bf]
;W[af]
;B[cf]TR[bb]TR[ac]TR[cc]TR[dc]TR[ad]TR[dd]TR[ae]TR[be]TR[ce]TR[af]TR[bg]TR[ah]TR[bh]C[White's group won't have two eyes.]
)))(;B[dc]TR[cc]TR[dd]C[Can black do this? I would be tempted to just tenuki this as white because it seems like it is just aji at this point.

[KataGo gives this move -21 pp for black and only gives it 3 visits out of 45,670 playouts.\]]
(;W[db]
;B[ed]
(;W[bc]C[Can't white live small in the corner at any time?]
(;B[eb]C[I don't think black can do anything here that prevents white from living.]
;W[ca]
;B[bd]
;W[bb]
)(;B[bb]C[Although there is this.]
(;W[cb]
;B[ba]
;W[eb]TR[ba]TR[bb]
)(;W[ab]C[So probably just this?]
;B[ba]
;W[bd]C[Something like this. Is white alive?]
;B[be]
(;W[ad]
;B[cb]C[This doesn't look like white's alive.]
)(;W[cb]C[Oh, just here maybe?]
;B[ad]
;W[eb]
;B[fb]
;W[ea]C[It still doesn't look like white's alive.]
))))(;W[ec]C[Maybe white can play here first? But then...]
;B[bc]
;W[dd]
;B[cb]
;W[dc]
;B[be]C[... black just goes here...]
;W[bb]
;B[ab]
;W[ca]C[... and if white takes...]
;B[fb]C[... black can play this one.]
;W[fc]
;B[gc]
;W[eb]
;B[ea]C[And white would die here as well. There would be some cuts on the outside, but I don't think they're that important.]
)(;W[bb]C[If white plays this one...]
;B[bc]
;W[cb]
;B[bd]C[... black simply connects, and then...]
(;W[ec]C[... if white plays here...]
;B[ab]C[... the hane kills.]
)(;W[ab]C[If white plays here...]
;B[eb]C[... this kills.]
)))(;W[bd]C[So what if white plays here...]
;B[ed]
(;W[cb]C[... and changes the direction?]
;B[bb]
;W[ba]C[Play here.]
;B[ab]
;W[db]
;B[eb]
;W[bc]
;B[da]C[Black would play here to kill.]
;W[be]
;B[bf]
;W[cf]
;B[bg]
;W[ce]
;B[cg]
;W[df]
;B[ef]
;W[dd]C[But there's a double-atari for white. So that looks like this might work. Direction is pretty important.]
)(;W[ce]
;B[cb]
;W[dd]C[It's also possible that we get into this position.]
;B[bc]
;W[cd]
;B[eb]
;W[bb]
;B[ba]
;W[ac]
;B[bf]
;W[cf]
(;B[cg]
;W[df]C[Black can't just simply block.]
;B[ef]
;W[ee]C[If white plays here...]
;B[ff]C[... even if black blocks on the outside here...]
;W[be]
;B[ae]
;W[bg]
;B[ag]C[... this would turn into another ko.]
)(;B[bg]C[And if black plays here...]
;W[cg]
;B[df]
;W[bj]
;B[bi]
;W[ai]
;B[bh]
;W[bl]C[... it's gonna be an eye versus no eye.]
;B[ae]
;W[be]
;B[ah]C[Something like this.]
;W[af]
;B[aj]
;W[bk]C[This is still eye versus no eye.]
;B[ei]
;W[eh]
;B[fi]
;W[fh]C[Black can't really win this.]
)))(;W[eg]C[[KataGo variation.\]]
)))(;B[en]
;W[cg]
;B[bg]
;W[bf]TR[cg]C[This double hane is something to consider.]
;B[cf]
;W[dg]
(;B[bh]C[If black plays here...]
;W[be]
;B[bd]
;W[bj]TR[ag]TR[ah]TR[bi]C[... he runs into this issue of where he doesn't have enough liberties.]
)(;B[be]TR[bf]C[And if black takes B14...]
;W[bh]
;B[af]
;W[bj]TR[ch]TR[ci]TR[cj]TR[dj]C[... he obviously loses the four stones.]
)))(;B[od]TR[pd]TR[pe]TR[mf]TR[pf]SQ[cn]C[I'm assuming the value of the Q14 stones is as great as the value of C6.

[KataGo gives this move -17 pp for black.\]]
;W[cg]C[[KataGo variation.\]]
;B[bg]
;W[bf]
;B[cf]
;W[dg]
;B[bh]
;W[be]
;B[ce]
;W[bd]
;B[bc]
;W[cc]
)(;B[cq]C[Especially since black can just live in the corner.

[KataGo gives this move -15 pp for black and only gives it 3 visits out of 54,677 playouts.\]]
;W[cp]C[[KataGo variation.\]]
;B[bp]
))(;W[od]C[White has a chance to just follow this up instead of tenukiing.

[KataGo gives this move -7.5 pp for white.\]]
(;B[ck]C[But black would be able to just protect his stones.]
;W[dl]
;B[cm]C[Something like this.]
)(;B[cl]C[Or play here directly.]
(;W[co]
;B[dn]
;W[go]C[And this would just be an entirely different game.]
)(;W[en]TR[dh]TR[di]TR[ej]TR[dk]TR[fk]C[Potentially, white needs to play here to protect the E10 group.]
;B[gq]C[And then black gets to come back and maybe try something like this.]
;W[gp]
;B[hq]C[And live locally.]
;W[fr]
(;B[io]
)(;B[jp]C[Or just here. These are all possibilities.]
)))(;B[jb]C[[KataGo variation.\]]
;W[kb]
;B[ib]
;W[oa]
;B[dg]
;W[cc]
;B[bd]
;W[ee]
;B[ed]
;W[ck]
;B[ei]
;W[dc]
;B[df]
;W[fi]
;B[eh]
)))(;B[nk]C[Now black gets to play this. But if he tries to be greedy and reduce this area without coming back to fix the left, he's in trouble.

[KataGo gives this move -22 pp for black and only gives it 1 visit out of 70,390 playouts.\]]
;W[ck]C[White would probably start here with this type of fight.]
(;B[cq]
;W[cp]
;B[bp]
;W[bo]
;B[bq]
;W[co]
;B[er]
;W[fr]
;B[eq]
;W[ep]
;B[fp]
;W[es]C[I think white would be happy to play here.]
;B[dr]C[There are some issues.]
;W[hq]
(;B[bs]C[But eventually, black needs to come back here.]
)(;B[bn]C[If black tries doing this...]
;W[ao]
;B[fo]
;W[dn]
;B[dm]
;W[en]TR[fp]C[... this isn't gonna work for black. The F4 stone on the outside's not gonna help.]
;B[em]C[If black just comes out...]
;W[fn]
;B[fm]
;W[gn]
(;B[bl]C[... black needs to defend here.]
;W[bk]TR[cg]C[But if black gives white this, that means the C13 hane is gonna be pretty devastating.]
)(;B[cl]C[And if black just protects here...]
;W[bk]C[... again, there's this.]
)(;B[gm]C[If black just comes out...]
;W[bl]C[... white can play here.]
(;B[cl]C[And no matter what black does...]
;W[an]C[... white's gonna be able to connect underneath.]
)(;B[cm]TR[dm]TR[em]TR[fm]TR[gm]TR[bn]TR[cn]C[So running with these stones isn't that great.]
))))(;B[cp]TR[cq]C[So black jumping into C3 would be a little scary to do.]
;W[cq]
;B[bq]
;W[cr]
;B[bo]C[I think something like this.]
;W[do]C[White plays here, and black tries to live locally.]
(;B[co]
;W[br]
(;B[ap]TR[br]C[Black shouldn't really respond to B2 like this.]
;W[bm]
;B[cm]
(;W[bl]C[There are some issues like this for black..]
(;B[em]C[Black jumps out.]
;W[gm]C[This is not a good fight for black.]
)(;B[bn]
;W[an]C[It's only one eye for black.]
))(;W[cl]C[If white plays the bad empty triangle...]
(;B[bn]
;W[an]
;B[bl]
;W[al]C[... that just means that this is a ko.]
)(;B[an]C[Actually, this is just alive.]
;W[bn]
;B[bl]
)))(;B[bm]
;W[bl]
;B[ap]C[Black can live like this.]
))(;B[bm]C[So maybe black plays here?]
;W[co]
;B[bp]
;W[bk]C[Black has to give that up.]
;B[br]C[Black can play here.]
;W[cg]C[And white can get this.]
)))(;B[oj]C[Or he plays here.

[KataGo doesn't give this move any visits out of 70,390 playouts.\]]
)(;B[qi]C[Or this one.

[KataGo doesn't give this move any visits out of 70,390 playouts.\]]
)(;B[lo]C[I imagine black can probably play here.

[KataGo gives this move -17 pp for black and only gives it 1 visit out of 70,390 playouts.\]]
)(;B[cp]C[Or even just start with this move. I imagine if black does this now, his problem is solved.

[KataGo gives this move -18 pp for black.\]]
;W[cq]C[[KataGo variation.\]]
;B[bq]
;W[co]
;B[bp]
;W[do]
;B[dq]
;W[lp]
;B[pm]
)(;B[bl]C[Black can probably play something along these lines.

[KataGo gives this move -16 pp for black and only gives it 6 visits out of 70,390 playouts.\]]
;W[lp]C[[KataGo variation.\]]
;B[pm]
;W[pn]
)(;B[cl]C[To fix this.

[KataGo gives this move -13 pp for black and only gives it 1 visit out of 70,390 playouts.\]]
)(;B[ck]C[I honestly have no idea what black wants to play here.

[KataGo gives this move -3.5 pp for black.\]]
;W[qh]C[[KataGo variation.\]]
;B[qg]
;W[nk]
;B[mk]
;W[nl]
;B[le]
;W[od]
;B[jb]
;W[kb]
;B[ib]
;W[oa]
;B[ei]
;W[cc]
;B[bd]
;W[ee]
;B[ed]
))(;W[cj]C[I guess if you think about it, what can white really do here?

[KataGo gives this move -7.8 pp for white.\]]
;B[dk]
;W[ch]
;B[bi]
(;W[dh]C[Except for maybe make some shape?]
;B[bj]
(;W[ce]C[And then add some confusion. If white plays here...]
;B[dc]C[... of course, black is gonna be able to play this way.]
;W[ed]
)(;W[cc]C[And if white plays this one...]
;B[ed]
;W[dc]
;B[be]TR[ch]TR[dh]TR[di]TR[ej]C[... black can actually force this, and then the outside's under attack.]
;W[bd]
;B[ce]
;W[fb]C[And white still needs to live locally.]
;B[bc]C[So if black plays here...]
;W[bb]
;B[ad]
;W[ab]C[... white lives.]
;B[ek]TR[ch]TR[dh]TR[di]TR[ej]SQ[mj]C[But then black gets to attack this, and you'll notice that N10 is in a good spot.]
))(;W[ek]C[[KataGo variation.\]]
;B[ck]
;W[eh]
;B[dg]
;W[dh]
;B[fi]
;W[ee]
;B[ed]
))(;W[dk]C[The other thing white can do is just play this simple atari.

[KataGo gives this move -4.2 pp for white.\]]
;B[cj]
(;W[ck]C[And then play this.]
;B[ek]C[But this fight isn't really gonna be that good for white.]
;W[dm]
;B[fk]MA[ia]MA[ib]MA[ic]MA[jc]MA[jd]MA[kd]MA[ke]MA[kf]MA[lg]MA[lh]MA[mi]MA[aj]MA[bj]MA[cj]MA[dj]MA[ej]MA[hj]MA[ij]MA[jj]MA[kj]MA[lj]SQ[mj]MA[ek]MA[gk]TR[cq]C[First of all, C3 is open; again, N10 is in a good position; and black is looking to actually just make the whole upper left his area, which is not very good for white.]
)(;W[fk]C[[KataGo variation.\]]
;B[ck]
;W[ed]
;B[ee]
;W[cc]
;B[bc]
;W[dl]
;B[cl]
;W[bd]
;B[ce]
)))(;B[dc]C[If black plays here, there's a potential ladder.

[KataGo gives this move -3.9 pp for black.\]]
(;W[cc]
;B[de]
;W[ed]
)(;W[ch]C[[KataGo variation.\]]
;B[de]
;W[cj]
;B[bi]
;W[ck]
;B[bh]
;W[mj]
;B[ej]
;W[li]
;B[dl]
;W[qh]
;B[qg]
;W[lp]
;B[ql]
;W[qj]
;B[pm]
)))(;W[ej]C[There are only a couple of ways white can go here, and that's really towards the center or the side.

[KataGo gives this move -1.4 pp for white.\]]
(;B[dh]
;W[ei]
;B[cj]C[If it's towards the center, we may get something like this.]
;W[el]C[White can reduce.]
(;B[en]C[But with something like this, black can invade.]
)(;B[cp]C[Or black can take the corner.]
)(;B[mj]C[Black can also turn here.]
;W[cl]
;B[bl]C[Just because there is a connection here.]
;W[bm]
;B[cm]
;W[bk]
;B[dl]
;W[ck]
;B[dk]
(;W[dm]
;B[bj]
;W[al]
;B[bn]C[Because white can't cut without dying.]
)(;W[al]C[And if white just takes...]
(;B[em]C[... black can play here.]
)(;B[bn]C[Or block.]
;W[bj]
;B[bi]
;W[aj]
;B[em]TR[di]TR[ei]TR[ej]TR[el]C[And then you'll notice white's stones on the outside are very damaged, so that wouldn't work.]
))))(;B[ek]C[[KataGo variation.\]]
;W[dd]
;B[ei]
;W[cc]
;B[ce]
;W[db]
;B[de]
;W[ed]
;B[ee]
;W[fj]
;B[dh]
;W[fc]
;B[gc]
;W[fb]
;B[mj]
;W[lp]
;B[le]
;W[od]
;B[ib]
;W[jb]
))(;W[ch]C[Playing here immaturely is not a good idea, either.

[KataGo gives this move -1 pp for white.\]]
(;B[ei]
;W[dh]
(;B[bi]C[First, black can play here.]
)(;B[cj]TR[ch]TR[dh]TR[di]C[Or just connect, and white's stones are very hurt.]
;W[dd]
;B[de]
;W[ce]
;B[cc]C[Even if we get something like this, there's not really much white can do in terms of living locally.]
(;W[ee]
;B[df]
(;W[ef]
;B[cf]
)(;W[cf]C[If white tries this...]
;B[ef]
;W[eh]
;B[fi]
;W[fh]
;B[gi]C[... I'm not even sure where white goes with something like this.]
;W[ed]C[If she connects.. ]
;B[fe]
;W[ff]C[... maybe white can get away with this type of stuff.]
;B[gf]
;W[fg]
;B[ec]
;W[dg]
;B[dc]
;W[bg]C[And white can make eyes like this, but she has to give up stones and give black a really nice solid corner to do this.]
))(;W[df]C[And even if white plays here...]
;B[ee]
;W[bf]C[... she wants to play this one, but...]
;B[be]
;W[cf]
;B[bd]C[... when black connects...]
;W[fg]C[... white is just still not alive.]
)))(;B[dh]C[[KataGo variation.\]]
;W[ei]
;B[cg]
;W[bh]
;B[cj]
;W[mj]
;B[dg]
;W[li]
;B[ql]
;W[pm]
;B[lh]
;W[ki]
;B[qi]
;W[qj]
;B[kh]
))(;W[dh]C[[KataGo gives this move -5.6 pp for white.\]]
;B[ej]C[[KataGo variation.\]]
;W[ee]
;B[ed]
;W[ce]
;B[dd]
;W[fi]
;B[ei]
;W[eh]
)(;W[ei]C[[KataGo gives this move -16 pp for white.\]]
;B[ch]C[[KataGo variation.\]]
;W[fk]
;B[mj]
;W[nk]
;B[ql]
;W[pm]
)(;W[cc]C[Normally, white plays something like this.

[KataGo gives this move -9.7 pp for white.\]]
(;B[dc]
;W[bc]C[White can descend.]
;B[bd]
;W[dd]C[And then play here.]
;B[de]
;W[ed]
;B[ec]C[This ladder works outright for white.]
;W[ee]C[So white can play this way.]
;B[ce]
;W[fc]C[I'm not sure how good this would be for white, just because the surrounding stones seem okay for black.]
;B[fb]
;W[gc]
;B[gb]C[White doesn't really have anything.]
)(;B[dd]C[[KataGo variation.\]]
;W[qh]
;B[qg]
;W[mj]
;B[lj]
;W[li]
;B[lh]
;W[ki]
)))(;B[od]C[Black can't do the cut anymore.]
;W[le]
;B[me]
;W[lf]
;B[nf]
(;W[ne]
;B[oe]
;W[of]C[Just because there's this.]
)(;W[oe]C[And also just playing the atari.]
;B[ne]
;W[ng]C[And this.]
))(;B[lf]C[If black wants the cut, he needs to do something... still not sure what. Probably just here directly?

[KataGo gives this move -14 pp for black.\]]
;W[od]C[Then white just needs to connect.]
;B[ei]C[[KataGo variation.\]]
;W[cj]
;B[dh]
;W[ci]
;B[ch]
;W[cc]
;B[bd]
;W[dd]
)(;B[ei]C[It's good to know that if black played on the top side, it would leave more availability for white to use the aji. It makes black's position more complicated, which he really doesn't need.

[KataGo gives this move -3.8 pp for black.\]]
(;W[eh]C[White can play here.]
)(;W[cj]C[Or here.]
;B[dh]C[[KataGo variation.\]]
;W[ci]
;B[ch]
;W[cc]
;B[bc]
;W[dd]
;B[ce]
;W[bb]
;B[le]
;W[db]
;B[ib]
;W[jb]
;B[dk]
)(;W[ci]C[Or here.]
)(;W[dh]C[Or here.]
;B[cj]
;W[dd]C[And then there's still also this attachment on the top side.]
)))(;W[dd]C[Usually, AlphaGo started in this corner.

[KataGo gives this move -4.9 pp for white.\]]
(;B[dc]
;W[di]C[And then it attached here.]
;B[ci]
;W[ch]C[And then it does something like this.]
;B[ei]
;W[dh]C[Connect.]
;B[cj]C[Connect.]
;W[ce]
;B[de]
;W[bd]
;B[ed]
;W[bf]C[And then trade something like this.]
;B[cf]
;W[be]C[I could be wrong.]
(;B[bc]
;W[df]
(;B[ef]
;W[dg]TR[bc]C[But I think this has been a thing before. If black plays B17, white is technically alive.]
;B[bh]
;W[bg]
;B[ai]
;W[ag]C[White can live with something like this.]
)(;B[dg]C[Unless black does this.]
;W[cg]
;B[eg]
;W[eh]
(;B[fg]
;W[fi]
;B[ej]
;W[fh]C[But white will just break out like this.]
)(;B[fh]C[There's no way for black to block here.]
;W[fg]
;B[ef]
;W[fi]
)))(;B[df]C[If black connects on top...]
;W[cb]C[... white will just go in the corner.]
;B[bg]TR[ch]TR[dh]TR[di]C[Black tries to capture the D12 stones.]
(;W[bh]
;B[cg]
;W[ag]C[If white tries this...]
;B[bc]
;W[cc]
(;B[af]
;W[ae]
;B[bb]C[... it's possible for black to go for the kill here.]
)(;B[bb]
;W[dd]C[This would be a dangerous ko to enact; it's not something I would recommend anyone to do.]
))(;W[cc]C[That being said, white usually just gives this up. Either she answers at C17 or tenukis altogether.]
)(;W[mj]TR[oi]TR[pi]TR[nj]TR[oj]TR[jk]TR[kk]TR[lk]TR[il]TR[gm]TR[hm]TR[fn]TR[eo]TR[dp]C[With a position like this, white may push at N10 to try to get a wall coming down to D4.]
(;B[lj]C[And if black plays here...]
;W[nh]C[... white has this cut.]
)(;B[li]C[So black stays here.]
(;W[lj]C[And white can continue pushing.]
;B[kj]
;W[kk]
;B[jk]C[Maybe now the double-hane is worth it?]
;W[jj]
;B[ki]
;W[jl]
;B[ik]
(;W[kl]C[But white can't continue pushing like this forever.]
;B[il]C[If white plays like this, you'll notice that black is actually the one who's getting the superb wall here.]
;W[im]
;B[hm]
;W[hn]
;B[gn]
;W[gm]
;B[hl]
;W[in]
;B[fn]C[Black and white are both getting a lot of points here.]
)(;W[il]C[Instead, white probably needs to do something like this.]
;B[kl]
;W[lk]
;B[hk]
;W[gm]C[Into here. White gives black minimal pushes and then tries to swallow everything possible. But I don't think this is something an AI would go for.]
))(;W[en]C[An AI might just push once as white and then try to build here to add an easier way of getting the wall.]
;B[bp]
;W[cm]
;B[bm]C[Let's say black continues playing this way.]
;W[dm]
;B[bl]
;W[lj]C[Now white plays this one.]
;B[kj]
;W[kk]
;B[jk]
;W[jj]
;B[ki]
;W[jl]
;B[ik]
;W[il]
;B[kl]
;W[lk]
;B[hk]
;W[gm]TR[cm]TR[dm]TR[en]C[You'll notice that with the extra stones, G7 actually completes the bottom side, so it makes the game a little different.]
;B[oj]C[And if white is worried about this cut...]
;W[ok]
;B[pj]
;W[pk]C[... she probably shouldn't be.]
;B[qi]
;W[qk]C[Because this type of position would be complete. This would be a lot of points for both players.]
;B[nk]
;W[nl]
;B[ll]
;W[mk]
;B[ml]
;W[nk]C[Black can't capture anything.]
)(;W[dn]C[Maybe attach?]
)(;W[kk]C[Or even just play here directly.]
;B[en]C[But that would leave this move.]
;W[gn]SQ[je]SQ[if]SQ[fg]SQ[gg]SQ[hg]SQ[ig]SQ[ih]SQ[jh]SQ[kh]SQ[hi]SQ[ii]SQ[li]SQ[gj]SQ[hj]TR[jn]TR[kn]TR[jo]TR[ko]TR[jp]TR[kp]TR[lp]TR[iq]C[And this is a little awkward for white, but it also means that black is not getting any wall. There is potential that black breaks the L5 area but white breaks the J12 area.]
)))))(;B[de]C[[KataGo variation.\]]
;W[cc]
;B[dc]
;W[ed]
;B[ec]
;W[ee]
;B[ce]
;W[fe]
;B[fc]
;W[dg]
;B[ef]
)))(;B[mj]C[I'm not really seeing why black shouldn't do this.

[KataGo gives this move -7.9 pp for black.\]]
(;W[nh]
;B[mi]
(;W[qh]TR[mj]C[I wonder if black doesn't double-hane at N10 because there's this?]
;B[ng]
;W[qg]C[Now black's corner is in trouble.]
;B[rh]
(;W[rf]
;B[qf]
;W[ri]
;B[re]
;W[qb]C[I think something as simple as this just works for white. Maybe there's more damage that she could do, maybe not.]
)(;W[ri]
;B[qf]
;W[qb]C[Maybe white just plays here directly.]
(;B[rc]C[And black is forced to answer.]
)(;B[pg]C[And of course black is gonna have a hard time cutting...]
;W[og]C[... because white can capture.]
)(;B[mh]C[Black capturing is fine.]
)))(;W[ng]C[It's entirely possible that white just does this.]
;B[qh]
;W[nk]TR[ld]TR[md]TR[nd]SQ[mi]SQ[ni]SQ[mj]C[And then you'll notice that black's N16 stones are a little weaker, and the N11 stones are just as weak.]
;B[pk]C[Even if black plays here...]
(;W[oj]C[... I think a simple connection.]
)(;W[qj]C[Or block here first.]
;B[qk]
;W[oj]C[And then connecting will be fine. I could be wrong.]
;B[rj]
)(;W[qk]C[Probably this.]
;B[qj]
;W[pj]C[Maybe play here.]
;B[qi]
;W[oj]
;B[ql]
;W[rk]
;B[rl]
;W[pl]C[And white will have something here.]
;B[sk]
;W[ok]
;B[rj]C[And then black will need to play this one.]
;W[rm]C[And white can go here.]
;B[pk]
;W[qk]SQ[mi]SQ[ni]TR[oi]TR[pi]SQ[mj]TR[nj]TR[oj]TR[pj]TR[nk]TR[ok]TR[pl]TR[qm]TR[rm]TR[on]C[This white group is still fine, and black still has to worry about the outside group.]
)))(;W[mi]
;B[nh]
;W[li]
;B[oj]
;W[nk]
;B[pj]TR[mj]C[Maybe the issue with N10 is that white actually just gives up the P11 stones and kind of takes this outside approach?]
)(;W[qg]C[Maybe here? Maybe this is threatening something in the corner.]
;B[qh]
(;W[rf]C[White can't really do this.]
;B[qf]
;W[pg]
;B[rh]C[Black just connects. This doesn't make much sense for white.]
)(;W[rh]C[Maybe here?]
;B[qf]
;W[pg]
;B[ri]C[But then again, black just plays this one.]
))(;W[qh]C[[KataGo variation.\]]
;B[oj]
;W[nk]
;B[qi]
;W[pj]
;B[qj]
;W[pk]
;B[qg]
;W[mk]
;B[mr]
;W[nr]
;B[mp]
;W[nq]
;B[hq]
;W[cf]
;B[ch]
;W[cc]
;B[dc]
;W[dd]
)))(;B[lp]C[Principally, there is no real follow-up after this move.

[KataGo gives this move -3.2 pp for black.\]]
(;W[jq]
(;B[lm]C[Black just gets pincered and then has to run.]
)(;B[ni]C[Or black tenukis and then white says, forget it, I'm going to attack your stones now.]
(;W[mm]
)(;W[jo]
)(;W[ko]
)))(;W[ip]C[[KataGo variation.\]]
;B[pc]
;W[nh]
;B[qh]
;W[le]
;B[jd]
;W[kc]
;B[lf]
;W[me]
;B[mn]
;W[qk]
;B[pm]
;W[pn]
;B[qn]
)))(;W[jq]C[I expect something like this.

[KataGo gives this move -0.5 pp for white.\]]
;B[ni]C[[KataGo variation.\]]
;W[qh]
;B[qg]
;W[nj]
;B[mi]
;W[mj]
;B[lj]
;W[li]
;B[ki]
;W[lh]
;B[mg]
;W[qi]
;B[pc]
;W[lk]
;B[kj]
;W[kk]
;B[jk]
;W[jl]
;B[ik]
;W[il]
)(;W[iq]C[I'm not sure what there is here for black.

[KataGo gives this move -2.6 pp for white.\]]
(;B[oq]C[I guess black could still do this. Potentially there's still aji.]
;W[op]
;B[pp]
;W[qq]
;B[nq]
;W[mp]
;B[lp]
;W[mq]
;B[mr]
(;W[nr]
;B[or]
;W[lr]
;B[ns]
;W[kr]
;B[pr]
;W[qr]
;B[rp]
;W[rq]
;B[rn]
;W[ps]TR[qp]TR[pq]TR[qq]TR[rq]TR[qr]C[Maybe black could attack this white group.]
)(;W[lr]
;B[kr]C[Something like this.]
;W[nr]
;B[ls]
;W[or]TR[po]TR[qo]SQ[lp]TR[pp]SQ[lq]SQ[kr]SQ[mr]SQ[ls]C[Although black's Q5 stones are hurt, he has a very strong shape locally.]
(;B[qk]C[And there's still potential with the invasion here.]
)(;B[ri]C[Or just simply reducing with this move.]
)))(;B[ni]C[[KataGo variation.\]]
;W[nj]
;B[mi]
;W[dd]
;B[de]
;W[cc]
;B[dc]
;W[ed]
;B[ec]
;W[ee]
)))(;W[pl]C[White could have tried this. This leaves a little bit more aji.

[KataGo gives this move -0.8 pp for white.\]]
(;B[rl]
)(;B[ri]
)(;B[rk]C[Maybe a little slide is possible now.]
)(;B[ni]C[[KataGo variation.\]]
;W[je]
;B[jd]
;W[kc]
;B[kf]
;W[ie]
;B[nj]
;W[he]
;B[gd]
;W[mf]
;B[kh]
;W[hi]
;B[qm]
;W[nl]
;B[rk]
;W[qj]
;B[ng]
;W[rj]
)))(;B[pm]C[If black just plays something here...

[KataGo gives this move -3.6 pp for black.\]]
(;W[pk]C[... it's possible white can try this.]
)(;W[qk]C[Or play here.]
)(;W[nl]C[Or something like this.]
;B[qk]C[Black is just forced to live locally.]
(;W[qi]
;B[ok]
(;W[nk]
;B[nj]C[This could turn into a fight.]
;W[mj]
;B[ni]
;W[en]C[It's possible that white could go for a large bottom.]
)(;W[mj]TR[ni]C[Probably another knight's move, or extend up at O11.]
))(;W[pk]C[Or white could even just play here...]
(;B[pl]
;W[ok]
(;B[qj]C[... and force black to play something like this...]
;W[qi]
(;B[ri]
(;W[en]C[... and then come back and play here with this type of thickness.]
;B[nm]C[(There's some aji here that white needs to be careful of.)]
)(;W[qh]C[There's also some aji here.]
;B[qg]
;W[rh]
;B[sh]
(;W[rj]
)(;W[pg]C[The other thing is, white can cut.]
)))(;B[ro]C[If black just does this and lives...]
;W[qh]C[... the cut aji still exists.]
))(;B[qi]C[Potentially black could play here, but...]
;W[qh]
(;B[qg]
;W[qj]C[... this is aji.]
)(;B[ri]
)(;B[qj]TR[ri]C[So if black just descends at S11 or connects at R10...]
;W[qg]
;B[rh]TR[oh]TR[ph]C[... white gets to cut the Q12 stones off again.]
)))(;B[qj]C[The cut aji happens regardless of what black does.]
;W[qi]
)))(;W[om]C[[KataGo variation.\]]
;B[pl]
;W[ol]
;B[pk]
;W[qh]
;B[qg]
;W[ok]
;B[ni]
;W[nh]
;B[ng]
;W[mh]
;B[qi]
;W[qj]
;B[pj]
;W[oj]
;B[rh]
;W[cj]
;B[cp]
;W[cq]
;B[bq]
;W[co]
;B[bp]
;W[bo]
)))(;B[ck]C[If black ignores...]
;W[nh]C[... white hanes at the head of two stones.]
))(;B[qh]C[Black doesn't want to play here.

[KataGo gives this move -4.7 pp for black.\]]
(;W[ni]C[Because when white jumps... ]
;B[oi]
;W[oj]
;B[oh]
;W[nj]
;B[qk]C[... black actually loses a lot of territory here. Black has gone from fourth-line area to third-line area.]
)(;W[ck]C[[KataGo variation.\]]
;B[ci]
;W[ek]
;B[ei]
;W[fm]
;B[bp]
;W[cq]
)))(;W[bp]C[Now, if white ignores... ]
(;B[lc]
;W[ld]
(;B[nc]
;W[mb]
;B[nd]
;W[nb]
(;B[kc]C[... black can go ahead and play this one.]
;W[me]C[Black is simply just looking to run out.]
)(;B[nf]C[Or potentially play something like this.]
;W[kc]C[And if white takes... ]
;B[od]
;W[pd]
;B[pc]
;W[ob]
;B[qc]C[... black can connect...]
;W[og]TR[pd]TR[pe]TR[pf]C[... and you can see that these white stones are in trouble.]
))(;B[mb]
;W[nc]
;B[kc]C[
]
;W[jd]
;B[jc]C[Black just taking away white's base is also possible.]
;W[me]TR[md]C[And white needs to come back and actually capture N16.]
))(;B[nc]C[There's the possibility of black playing here first.]
;W[nb]
;B[lc]
;W[nd]
;B[ld]
;W[lb]
;B[kc]C[Black could also go for the outside, although white would be relatively strong.]
)))(;B[lc]C[I can only guess that the idea here is to play this way.

[KataGo gives this move -9.2 pp for black.\]]
;W[ld]
(;B[nc]
;W[mb]
;B[nd]
;W[nb]
;B[od]
;W[pd]C[And now black has something here.]
;B[pc]
;W[ob]TR[pc]C[But obviously, if black just does Q17, he's gonna die.]
)(;B[me]C[[KataGo variation.\]]
;W[mb]
;B[cp]
;W[cq]
;B[bq]
;W[co]
;B[bp]
;W[dn]
;B[bo]
;W[do]
;B[cm]
;W[lp]
;B[dm]
;W[pl]
;B[no]
)))(;W[cn]TR[oc]TR[pe]TR[pf]C[If white just plays anywhere else, it's an easy move for black to just attack the top right group.]
(;B[mc]
)(;B[md]
)(;B[oq]C[There's also the fact that black can just start off with this fight as well.]
;W[op]
;B[pp]
;W[qq]
;B[nq]
;W[mq]
;B[mr]
))(;W[qm]TR[oc]TR[pe]TR[pf]C[If white doesn't defend the weak P17 group and just jumps in at R7 (which isn't easy) ...

[KataGo gives this move -2.4 pp.\]]
(;B[no]
;W[mo]
;B[nn]
(;W[mp]C[... first of all, white has a weakness and needs to come back here.]
;B[pl]C[And black just leans.]
;W[ql]C[You'll notice that if white actually wants to live...]
;B[pk]
;W[qk]
;B[qj]
;W[rj]
;B[qi]
;W[ri]
;B[rh]
;W[rn]
;B[ro]
;W[rl]TR[qc]TR[qd]TR[qe]TR[qf]TR[qg]TR[qh]TR[qi]TR[qj]TR[pk]TR[qk]TR[pl]TR[om]TR[on]TR[no]C[... which I'm not saying she can, but let's say white lives like this, you'll notice that black is really thick here.]
;B[md]C[And that allows black to play a very strong attack on the top side.]
)(;W[pk]C[Or white has to come out.]
(;B[nh]C[But black's stones are actually relatively safe.]
)(;B[mp]C[Black can play something like this.]
(;W[nq]
;B[lo]C[Black has the ladder.]
)(;W[lp]C[If white plays here... ]
;B[op]
;W[mq]
;B[oq]C[... black can cut through.]
))))(;B[on]C[[KataGo variation.\]]
;W[ol]
;B[mc]
;W[me]
;B[kd]
;W[pj]
;B[lf]
;W[oh]
)))(;B[qg]C[We could see something like this. I'm not sure why black doesn't do that.

[KataGo gives this move -1.9 pp for black.\]]
(;W[pg]
;B[qh]
;W[ph]
(;B[pi]C[It's not like black is forced to play this hane.]
;W[qf]
;B[rf]
(;W[rg]TR[qo]C[Because of black's R5 stone, it doesn't make sense for white to try for something like this.]
;B[re]
;W[qi]
;B[rh]
;W[ri]
;B[sg]
;W[qk]
)(;W[qi]C[Depending on a few things, white could try this...]
;B[rh]
;W[ri]
(;B[pj]
)(;B[qj]TR[ri]C[... but there's no way for white to descend at S11.]
(;W[rj]
;B[qk]
;W[rk]
;B[ql]
;W[oi]
;B[pj]
;W[rl]TR[qo]C[Without R5, white would crawl all the way.]
)(;W[sh]C[Normally, white would atari first and then crawl.]
;B[rg]
;W[rj]
;B[qk]
;W[rk]
;B[ql]
;W[oi]
;B[pj]
;W[rl]
;B[rm]TR[qo]C[But because of R5, eventually black gets to play here.]
;W[qb]C[And then there's no way for white to win in this corner.]
))))(;B[qi]C[Black can still play here.]
))(;W[qm]C[Maybe it's because a pincer is now really effective, as well.]
)(;W[op]C[[KataGo variation.\]]
;B[cn]
;W[fq]
;B[kc]
;W[pn]
;B[dj]
;W[ch]
;B[cp]
;W[cq]
;B[bq]
;W[co]
;B[bp]
;W[do]
;B[bo]
;W[dd]
;B[dc]
;W[cc]
)))(;B[pd]C[I think we could see this; it probably just isn't popular without the pincer stone.

[All comments on this game by Tang Jie (CHN 5d), except bracketed comments by Maharani.

KataGo gives this move -11 percentage points winrate (pp) for black.\]]
;W[od]
(;B[oe]
;W[pf]
;B[ne]
;W[re]
(;B[rd]
)(;B[pb]
))(;B[qe]C[[KataGo variation.\]]
;W[pf]
;B[rg]
;W[op]
;B[kc]
;W[pn]
)))