(;FF[4]
CA[UTF-8]
GM[1]
GN[KataGo 7 komi self-play - game 122]
PC[https://online-go.com/review/1059280]
PB[KataGo]
PW[KataGo]
BR[9p]
WR[9p]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[7]
RU[NZ]

;B[pd]
;W[pp]
;B[dd]
;W[dp]
;B[qn]
;W[cc]
;B[cd]C[Typical 3-3 stuff.

[All comments on this game by Tang Jie (CHN 5d), except bracketed comments by Maharani.\]]
;W[dc]
;B[ed]
(;W[fb]
;B[nq]C[A principled move. Once we have approached and the opponent ignores, we should add another approach.]
;W[np]
;B[mp]
;W[no]
;B[pq]
;W[qq]
;B[oq]C[Fairly straightforward.]
(;W[rp]C[The game leads to another joseki...]
;B[op]
;W[po]
;B[oo]
;W[pn]
;B[nm]C[... which I really don't know well, but I've played it a few times.]
(;W[ln]C[White plays here immediately, which doesn't make sense as a human being.
This type of move only makes sense if you're a strong player and you've actually researched the shape. If you haven't, there's really no point in playing it because you don't know how to play around it.]
;B[lo]
;W[mn]
(;B[kn]C[I personally don't understand this position.]
;W[ml]TR[ln]TR[mn]TR[no]TR[np]C[Apparently the AI always wants to bring these stones out, which I can't really understand fully.]
;B[nl]
;W[ql]C[White eventually comes back and fixes. ]
;B[mk]
;W[ko]C[And then we have this whole fight on our hand.]
;B[kp]
;W[jo]
;B[jp]
;W[km]
;B[jn]
;W[io]
;B[in]
;W[hn]C[And this fight looks just vulgar. It's kind of a fight that you would see when players have strictly researched the shape. All these moves are enforced by shape, and a small mistake would lead to someone gaining a pretty sizable lead.]
;B[jl]
;W[ho]C[And then white connects.]
(;B[kl]TR[ml]TR[km]TR[ln]TR[mn]TR[no]TR[np]C[Black defends and just swallows the O4 stones...]
;W[iq]TR[qk]TR[ml]SQ[ql]TR[km]SQ[hn]TR[ln]TR[mn]SQ[ho]SQ[io]TR[no]TR[np]C[... and then white gets to jump out on the bottom, having decided to trade the O4 stones for the bottom left.
So what's the profit? White got R8 on the right side, and some sort of wall towards the bottom left. Black captured stones in the center and got a few points on the bottom; and if we consider R9, black also has aji to explore on the right side.]
(;B[cq]C[Black jumps into the corner, which makes sense here; he's kind of forcing white's hand to take the bottom side.]
;W[dq]
;B[cp]
;W[cn]
;B[co]
(;W[dn]C[White extends up.]
;B[bn]
;W[bm]
;B[do]
;W[eo]
;B[bo]TR[do]C[I think black pushing and playing here is fine.]
(;W[cl]C[White needs to come back and fix.]
(;B[ep]C[In the actual game, the AI wants to cut first.]
;W[eq]TR[ep]C[This is a key point of the game. Black's made this quick exchange where he's left some good timing-aji, rather than playing it later and then white just giving up a few stones.]
(;B[bc]C[In the actual game, black comes to the top side.]
;W[bb]
;B[eb]
(;W[bd]C[But I can see why white's doing this.]
;B[ec]
;W[be]TR[ac]C[White goes for the outside and doesn't even take. I wouldn't say this is normal.]
;B[jc]C[Black gets to extend.]
;W[df]SQ[aa]SQ[ab]TR[eb]SQ[ac]SQ[bc]TR[ec]TR[jc]SQ[ad]SQ[bd]TR[cd]TR[dd]TR[ed]TR[pd]SQ[ae]SQ[be]TR[mk]SQ[cl]TR[jl]TR[kl]SQ[bm]SQ[cn]SQ[dn]TR[ap]TR[bp]TR[aq]TR[bq]TR[ar]TR[as]C[And white jumps.
So basically, we switched. Black gets corner points in the lower left while white takes the top left corner and some influence; and then black changes the direction of the game, where he's building the top side and has center influence.]
(;B[hd]TR[jc]TR[mk]TR[jl]TR[kl]C[Black fixes, trying to keep the initiative, and saves a lot of the aji that white could have used to nullify some of black's center influence...]
;W[qf]TR[qk]C[... which allows white to approach on the right side, protecting against R9 a little.]
;B[qe]C[The kick is fairly normal.]
;W[pf]
;B[nd]
(;W[pj]C[I would say this is pretty normal, too. White just needs to play high, because she doesn't really care about the points on the right side; she's still focused on, "Can I reduce the center without giving black what he wants?"]
(;B[qh]C[In the actual game, black plays the center move and then allows white to invade the top.]
;W[qc]
;B[rf]
;W[nb]
;B[oc]
;W[ob]
;B[pb]
(;W[re]C[This is another key point of the game. White needs to force this...]
;B[rd]
;W[qd]
;B[pe]
;W[pc]SQ[pb]C[... in order to get sente to capture Q18 in a forceful way. Interesting that white is forced to play this way; I know the idea.]
(;B[se]C[The big thing is, black needs to take here in sente and not play any other forcing moves...]
;W[qb]C[... in order to make this move feel kind of "eh". White needs to fix.]
;B[dh]TR[bb]TR[cc]TR[dc]TR[bd]TR[be]TR[df]C[That being said, black's able to invade the left side; I think in this case, this is probably an okay move.
It's a bold move, but at the same time, white's corner's not fully alive. Black can definitely squeeze, but white does have one eye.
But I think black is mostly targeting at the space where he can cut.]
(;W[fg]
(;B[ej]C[In the actual game, black plays the knight's move...]
(;W[en]C[... and white just connects to protect the cut immediately.]
;B[gi]TR[dh]TR[ej]C[Black is able to run out, playing these kind of floating shapes in order to get to the center while reducing white's left side.]
(;W[gf]C[And then white protects here, making the decision to kind of attack in the center.]
(;B[rj]C[But black decides to play a forcing move here, which is interesting. I would imagine continuing in the center instead would be good. The AI does want the right side; it seems to be the key point here...]
(;W[ei]C[... but I would argue that white attaching here seems to be a pretty big follow-up, even if it just protects; but I'm not an AI.]
(;B[qm]C[In the game black ignores, attacking continuously...]
(;W[nk]C[... and white cuts first; interesting.]
;B[pm]C[And then black turns.]
;W[on]
;B[nn]TR[pm]TR[qm]TR[qn]C[Black gives up three stones for the outside, which seems pretty normal.]
;W[om]
;B[ok]C[Black plays the atari...]
;W[pl]SQ[nj]TR[pm]TR[qm]TR[qn]C[... and then white takes. In on sense, as black I'd be, like, "free ponnuki!"]
;B[rl]C[In another sense, black doesn't have to answer immediately.]
(;W[rk]
;B[ol]C[Makes sense.]
;W[rm]C[White takes the atari.]
;B[pk]
;W[qk]
;B[qj]TR[pf]TR[qf]TR[pj]TR[nk]C[And black takes this gigantic outside.]
;W[sl]
;B[hl]SQ[gi]SQ[ej]TR[jl]TR[kl]TR[in]TR[jn]TR[kn]C[And black also got sente, finally fixing the weakness that he had while also connecting his stones.]
;W[cr]
;B[br]
;W[dr]
;B[bs]C[I'd say the game shifts here, really going back and forth.]
(;W[id]C[In the actual game white attaches, looking for some aji here.]
(;B[he]C[Black decides to resist.]
;W[ic]C[White descends, trying to attack. The fighting here kind of settles almost the whole game here.]
;B[eh]C[Black plays on the left.]
;W[jd]TR[eb]TR[ec]TR[cd]TR[dd]TR[ed]TR[hd]TR[he]TR[dh]TR[eh]C[So essentially, black's given up the idea that he's going to take a lot of the center points. Instead, he's going to reduce white on the left.
But in this case, black's making exchanges that both help the D16 group and reduce the left, while white is just taking points.]
;B[jf]TR[df]TR[gf]TR[fg]C[For example when black plays here, he's saying, "I can cut your D14 stones off at any time."]
(;W[kf]C[The attachment is very aggressive.]
;B[ef]TR[kf]C[Personally, if I saw L14 in my game as black, I'd be, like, "okay, isn't that a little too aggressive? Couldn't I just take E14?"]
(;W[kg]C[But white ignores, saying, "hey, I'm gonna reduce you even further."]
(;B[jg]
;W[le]TR[jc]TR[oc]TR[hd]TR[nd]TR[pd]TR[he]TR[pe]TR[qe]TR[jf]TR[jg]C[White's kind of fighting this out, further separating the groups...]
;B[mc]SQ[ic]SQ[id]SQ[jd]SQ[le]TR[gf]SQ[kf]TR[fg]SQ[kg]C[... and now black's really almost all-in. He's saying, "F13 is enough points; I'm going to attack the J16 group now."
Both players are fighting for the one-point edge; something I would say only AI can do in such a middlegame, because at this point, we're only 127 moves in and the end of the game is not crystal-clear for human players.]
;W[jh]
;B[ih]
;W[je]
;B[if]TR[je]C["Beautiful" shapes being played by both players.]
;W[ne]
;B[oe]
;W[nj]C[White's just making shape here.]
(;B[mo]TR[nj]C[Black needs to take and fix all his shape problems.]
;W[nf]
;B[ld]
(;W[me]C[And then white is threatening to separate black's group.]
(;B[nc]C[Black fixes.]
;W[lk]C[White takes.]
;B[kh]C[Black cuts.]
;W[oj]TR[ph]C[And white still connects, because she can make some eye here by attaching at Q12.]
(;B[ip]C[In the actual game, black just doesn't care; interesting. He shouldn't have played this move.]
;W[hp]
;B[ir]
;W[no]
;B[np]
;W[mm]
;B[no]C[This stage of the game is relatively exhilarating. Once black has decided to live on the bottom, white decides to squeeze the best she can...]
;W[li]
;B[lh]
;W[mh]C[... and then kind of forces this situation.]
(;B[kj]
(;W[hq]C[In the actual game, white connects...]
;B[jq]C[... black blocks...]
;W[jb]C[... and then white takes a liberty here.]
;B[hr]C[Black can play this turn at any point.
It looks like here, the game kind of goes back and forth; and this kind of turns into a large, long endgame.]
;W[gr]
;B[bg]
;W[bf]
;B[gq]
;W[gp]
;B[cg]
;W[cb]
;B[gs]
;W[fr]
;B[of]
;W[de]
;B[lg]
;W[mg]
;B[lf]
;W[ke]
;B[kc]
;W[eg]
;B[ee]
;W[dg]
;B[lj]
;W[mj]
;B[kb]
;W[kk]
;B[jj]
;W[gc]
;B[ib]
;W[hb]
;B[ja]
;W[hc]
;B[ge]
;W[pi]
;B[og]
;W[fe]
;B[fd]
;W[mf]
;B[ji]
;W[hf]
;B[ie]
;W[ff]
;B[gd]
;W[oh]
;B[ea]
;W[fa]
;B[qr]
;W[rr]
;B[ha]
;W[ga]
;B[fc]
;W[ia]
;B[pa]
;W[sb]
;B[ha]
;W[il]
;B[ik]
;W[ia]
;B[rc]
;W[rb]
;B[ha]
;W[im]
;B[jm]
;W[ia]
;B[rq]
;W[qp]
;B[ha]
;W[qi]
;B[ri]
;W[ia]
;B[sr]
;W[ha]
;B[mb]
;W[qa]
;B[ph]
;W[hm]
;B[jk]
;W[ng]
;B[rs]
;W[sp]
;B[cj]
;W[fi]
;B[fh]
;W[fj]
;B[gh]
;W[fl]
;B[gj]
;W[dj]
;B[di]
;W[ek]
;B[dk]
;W[ck]
;B[ej]
;W[jr]
;B[kr]
;W[dj]
;B[ca]
;W[ba]
;B[ej]
;W[rh]
;B[rg]
;W[dj]
;B[mi]
;W[ni]
;B[ej]
;W[an]
;B[ao]
;W[dj]
;B[si]
;W[sk]
;B[ej]
;W[bq]
;B[aq]
;W[dj]
;B[rn]
;W[sn]
;B[ej]
;W[fk]
;B[gl]
;W[bj]
;B[dj]
;W[bi]
;B[dl]
;W[gm]
;B[bh]
;W[hg]
;B[fm]
;W[em]
;B[el]
;W[fn]
;B[am]
;W[al]
;B[jb]
;W[lm]
;B[ak]
;W[bl]
;B[ai]
;W[aj]
;B[cs]
;W[mi]
;B[dm]
;W[cm]
;B[gk]
;W[fm]
;B[hi]
;W[fs]
;B[js]
;W[hs]
;B[ds]
;W[es]
;B[sc]
;W[sq]
;B[rr]
;W[af]
;B[ah]
;W[ma]
;B[la]
;W[da]
;B[db]
;W[oa]
;B[an]
;W[ki]
;B[jh]
;W[gs]
;B[is]
;W[na]
;B[ch]
;W[cf]
;B[sh]
;W[ks]
;B[ls]
;W[bp]
;B[ap]
;W[hj]
;B[ij]
;W[bq]
;B[ar]
;W[kd]
;B[md]
;W[ca]
;B[sj]C[[White 51 % (KataGo)\]

-- chat --
Maharani: Video review by Tang Jie (CHN 5d): https://drive.google.com/file/d/1G8DrNBRQENxuycwqA0UAlu18MRQ1wuK7/view?usp=sharing
]
)(;W[lg]C[White could have squeezed first, which I thought she would.

[KataGo gives this move -5.6 pp for white.\]]
;B[ki]C[I think most players would connect here, and that would be a free exchange for white.]
;W[jq]C[[KataGo variation.\]]
;B[kq]
;W[jr]
;B[kr]
;W[hq]
;B[nh]
;W[mi]
;B[oh]
;W[kc]
;B[kd]
;W[ke]
;B[mb]
;W[pa]
;B[hb]
))(;B[lg]C[Interesting that black doesn't just make this exchange...

[KataGo gives this move -12 pp for black.\]]
;W[mg]
;B[kj]C[... because he's not gonna get it anyways, and then play this way.]
))(;B[lh]C[This is one thing for white to worry about. I personally would play this, just because black's looking to attack the white group.

[KataGo gives this move -3.3 pp for black.\]]
(;W[mi]C[Maybe white could play like this...]
)(;W[ph]C[... or attach for eyes, but I think she's looking to gain some strength in the center instead...]
)(;W[ji]TR[kh]TR[lh]C[... so white could play this move and attack the L12 stones.]
)(;W[no]C[It looks like white's going to squeeze...]
;B[np]
;W[mm]
;B[no]C[... so she's separating black's bottom group from the center...]
;W[mi]C[... and THEN she plays this...]
;B[jr]SQ[ic]SQ[id]SQ[jd]SQ[je]SQ[le]SQ[me]SQ[ne]SQ[kf]SQ[nf]SQ[kg]TR[ji]SQ[mi]SQ[nj]SQ[oj]SQ[pj]SQ[lk]SQ[nk]SQ[ml]SQ[mm]SQ[ln]SQ[mn]C[... forcing black to fix on the bottom side. And then later white can play K11, it's a possibility; and it looks like her M6 group is well connected to the top side.]
;W[jb]SQ[ic]TR[jc]SQ[id]SQ[jd]SQ[je]SQ[le]SQ[me]SQ[ne]SQ[kf]SQ[nf]SQ[kg]SQ[mi]SQ[nj]SQ[oj]SQ[pj]SQ[lk]SQ[nk]SQ[ml]SQ[mm]SQ[ln]SQ[mn]C[Once white has taken K17, her whole M6 group looks alive; and then black is forced to come back to the bottom and play endgame.]
)(;W[mh]C[[KataGo variation.\]]
;B[jr]
;W[no]
;B[np]
;W[mm]
;B[no]
;W[ir]
;B[si]
;W[sk]
;B[pa]
;W[rc]
;B[jb]
;W[ji]
;B[kj]
;W[lg]
;B[ki]
)))(;B[mj]C[If we say black's gonna play here...

[KataGo gives this move -16 pp for black.\]]
;W[nc]
;B[md]
;W[od]C[... now black's in a ko, and this is almost game-losing.]
;B[rn]C[[KataGo variation.\]]
;W[ro]
;B[oc]
;W[ii]
;B[hh]
))(;W[lk]C[If white just takes this, she doesn't need to separate black's top group.

[KataGo gives this move -8.4 pp for white.\]]
;B[kh]C[[KataGo variation.\]]
;W[oj]
;B[ji]
;W[no]
;B[np]
;W[mm]
;B[no]
;W[mi]
;B[jr]
;W[kc]
;B[mb]
;W[rc]
;B[of]
;W[og]
;B[hq]
;W[hr]
;B[ip]
;W[hp]
;B[gq]
;W[gr]
;B[ir]
;W[gp]
))(;B[nf]C[If black were to play something like this...

[KataGo gives this move -22 pp for black.\]]
(;W[mm]C[... we would see kind of a squeeze going on.]
)(;W[lk]C[Potentially just this.]
)(;W[me]C[I have no idea what the AI wants.]
)(;W[oj]C[But essentially, this aji seems to remain.]
;B[mo]
;W[no]
;B[np]
;W[mm]C[White could do something like this...]
;B[no]
;W[lk]C[... with the ladder. She's fully separated black's bottom group from the center.]
)(;W[mo]C[[KataGo variation.\]]
;B[mm]
;W[lp]
)))(;B[ke]C[Black probably cannot just fight this.

[KataGo gives this move -14 pp for black.\]]
;W[je]C[White just cuts.]
(;B[le]
;W[if]C[If white does it like this...]
;B[jg]
(;W[ig]
;B[jh]
;W[ie]TR[gf]TR[fg]C[... it allows her to connect up.]
)(;W[jh]C[Is there a magic net?]
;B[ig]
;W[hh]
;B[hf]
;W[hg]C[I think there's a magic squeeze here, which is a pretty hard issue for black.]
;B[ie]
;W[ih]
;B[if]
(;W[kc]TR[jc]C[One thing white can do is capture K17.]
)(;W[hc]C[But turning is something white could do.]
;B[gd]
;W[kj]TR[kh]C[But she's aiming at some of the issues here. Essentially, white's fixing the L12 cut where she has a weakness and black wants to use it to come out. That makes sense.]
)))(;B[jg]C[If black just fixes...]
;W[le]C[... then white's going to be be able to atari down... ]
;B[kd]
;W[ld]
;B[kc]
;W[lc]
;B[ib]
;W[hc]C[... and this doesn't end pretty for black.]
)(;B[hc]C[[KataGo variation.\]]
;W[if]
;B[ib]
;W[jb]
;B[jg]
;W[le]
;B[jh]
;W[kh]
;B[kc]
;W[kd]
;B[kb]
;W[ji]
)))(;W[cf]C[I imagine that we would have to fight this out.]
;B[eg]
))(;W[lc]C[For example, if it's just like this...]
;B[ef]
;W[eg]
;B[dg]C[... black can go ahead and cut.]
;W[cf]C[Now when white fixes...]
;B[ff]TR[jc]SQ[gf]SQ[eg]SQ[fg]SQ[ei]C[... black can protect, I guess this is the best move; and you'll notice that black is regaining points that he lost on the top side by capturing the center. He's reduced and fixed his weak group, which is pretty good.]
))(;B[ic]C[The game is still going strong. Black playing here is not okay.

[KataGo gives this move -13 pp for black.\]]
;W[gd]
(;B[gc]
;W[he]
;B[hc]
(;W[jf]C[I think the idea is, now white can go out in the center.]
)(;W[ih]C[Probably something like this.]
)(;W[fi]C[Or come back and play this.]
;B[fj]
(;W[dj]C[And then white probably take this.]
)(;W[gj]C[Looks like this is better.]
(;B[gk]TR[di]C[I guess the idea here is, if black were to atari first, it would give him a better chance at survival than D11.]
;W[hj]
(;B[fl]C[If black were to fix the weakness here...]
(;W[hi]C[... white's just gonna have fun...]
)(;W[ii]C[... fixing her own weakness.]
))(;B[hi]C[So potentially, we turn this into a large fight.]
)(;B[dj]C[Black could also play here as well.]
)(;B[di]C[Or even play here.]
(;W[gh]C[White needs to fix somehow...]
)(;W[eg]C[... not sure how.]
)(;W[fh]C[Can't be an empty triangle...]
)(;W[hh]C[... can't be this one, either.]
)(;W[hi]C[Probably the atari...]
;B[gh]
(;W[fh]C[... and then connect.]
)(;W[eg]C[Or bamboo.]
(;B[dk]C[And then black needs to fix his shape.]
)(;B[bk]SQ[he]SQ[gf]SQ[fg]TR[dh]SQ[gh]TR[di]SQ[gi]SQ[hi]TR[ej]TR[fj]SQ[gj]SQ[hj]TR[gk]TR[hl]C[Maybe like this, as we saw in previous AI variations.
Black kind of breaks into the left side, while white gets the extra thickness that she needs to reduce the center and give more meaning to the G10 cut.]
)))))(;B[di]TR[id]TR[he]C[It's kind of hard to see; but the idea is, once black's given white strength around J16, he's allowed her unfortunate thickness.]
;W[hi]
;B[gh]C[And one way black could play this off is stuff like this...]
;W[eg]
;B[bk]C[... and then he comes back and plays this type of move.]
;W[gk]C[But white will play here...]
;B[ck]C[... and then black needs to fix, and this would turn definitely into a large fight.]
;W[bg]
))))(;B[he]C[[KataGo variation.\]]
;W[fd]
;B[hg]
;W[hf]
;B[if]
;W[ie]
;B[jf]
;W[hc]
;B[hb]
;W[fc]
;B[gc]
;W[ge]
;B[eh]
;W[hc]
))(;B[hc]C[This is probably a good move.

[KataGo gives this move -3.4 pp for black.\]]
(;W[he]C[I think here, you'll just see something like this.]
(;B[ic]C[Black could connect.]
)(;B[ie]C[Cutting is probably okay.]
;W[if]
;B[je]
;W[fi]C[And then we're going to play this fight.]
(;B[fj]C[The AI does not like the connection here.]
;W[gj]
)(;B[gj]C[Black's not even playing this.]
)(;B[jf]TR[ie]TR[je]C[Black turns. He now has stones here that are making the center side larger.]
;W[gj]
;B[ii]C[And if black plays something like this, he has officially sealed white out of the right side.]
(;W[gl]C[But that means white can also seal black out of the left side.]
)(;W[fj]C[Someway, somehow.]
)(;W[hi]C[Probably with something like this.]
)(;W[ig]C[Or white plays here first...]
;B[jg]
;W[mc]C[... asks if she can come in...]
;B[md]
;W[gk]C[... and then kind of takes the whole left side.
This is definitely more of an "I've gotta count this out before I play" type of game.]
))))(;W[fi]C[[KataGo variation.\]]
;B[if]
;W[jd]
;B[ic]
;W[gj]
;B[hj]
;W[hi]
;B[ii]
;W[gh]
;B[ih]
;W[md]
;B[me]
;W[ld]
;B[le]
;W[jg]
;B[jf]
;W[hk]
;B[ij]
;W[ik]
;B[jk]
;W[im]
;B[jm]
;W[il]
;B[lb]
;W[kr]
;B[nc]
))(;B[ie]C[Hane on top is always another move that could happen.

[KataGo gives this move -6.2 pp for black.\]]
;W[gd]
;B[gc]
;W[he]
;B[hc]
(;W[if]
)(;W[jd]TR[id]C[The AI wants to bring the stone out...]
;B[ic]
;W[if]C[... and then play the atari.]
(;B[jh]TR[ie]C[Then black says, "I don't need to save J15..."]
)(;B[eh]C["... I just need to protect on the left side", so that's also an option.]
)(;B[di]C[[KataGo variation.\]]
;W[fj]
;B[fi]
;W[eh]
;B[ek]
;W[hj]
;B[gj]
;W[gk]
;B[hk]
;W[gl]
;B[gm]
;W[fl]
;B[ii]
;W[hm]
;B[im]
;W[fk]
;B[ck]
))))(;W[di]TR[cr]TR[dr]C[The trade here is that after playing the sente moves on the bottom, white gets to come back and play something like this.

[KataGo gives this move -12 pp for white.\]]
;B[jh]C[[KataGo variation.\]]
;W[jf]
;B[kg]
;W[me]
;B[md]
;W[kf]
;B[lg]
;W[gd]
;B[gc]
;W[ne]
;B[hf]
)(;W[dj]C[Or even here...

[KataGo gives this move -22 pp for white.\]]
(;B[fi]C[... and black will probably just end up giving it up.]
;W[di]TR[jc]TR[oc]TR[hd]TR[nd]TR[pd]TR[pe]TR[pf]TR[qf]TR[fi]TR[gi]TR[ej]TR[pj]TR[mk]TR[nk]TR[hl]TR[jl]TR[kl]SQ[rl]SQ[pm]SQ[qm]SQ[qn]C[But you'll notice that black is fixated on the center side now, while having given up a few stones to achieve it.]
)(;B[hg]C[[KataGo variation.\]]
)))(;W[nj]TR[nk]C[Because when white brings this stone out...]
;B[ol]
;W[pk]C[... white's in a little bit of trouble...]
;B[mo]SQ[pm]SQ[qm]SQ[qn]TR[no]TR[np]C[... because one, black has this capture; but he's also saving his R6 stones as well.]
))(;W[rl]C[It's interesting that the AI forces this...

[KataGo gives this move -6 pp for white.\]]
(;B[pm]
;W[on]
(;B[pl]TR[nn]C[... and then looks at this immediately instead of just the atari.]
;W[nn]TR[pf]TR[qf]TR[pj]TR[ql]TR[rl]C[Black lets white connect up and has now taken the outside stones.]
;B[lr]TR[ei]C[But black needs to compromise and live locally on the bottom. Black also hasn't answered E11, so there's that.]
;W[ll]C[But black has also compromised the outside shape as well.]
;B[lk]
(;W[kk]TR[ll]C[So for example, later maybe white can push and cut.]
)(;W[nk]TR[ll]C[Even push and cut on this side as well; so there's gonna be a big fight here.]
))(;B[nn]
;W[om]
))(;B[di]C[[KataGo variation.\]]
;W[id]
;B[hc]
;W[eh]
;B[dg]
;W[ef]
;B[fj]
;W[dj]
;B[dk]
;W[cj]
;B[ck]
;W[bj]
))(;W[on]C[Ah, I see. If white does it the other way, say she plays here first...

[KataGo gives this move -19 pp for white.\]]
;B[nn]
(;W[rl]C[... and then plays this...]
;B[pm]C[... black's not gonna play this turn; it doesn't make sense.]
;W[om]
;B[pl]
;W[ol]
;B[ok]
;W[pk]TR[pl]TR[pm]TR[qm]TR[qn]C[Basically the idea is, white captured the R6 stones...]
;B[ro]
;W[qp]
;B[qr]
;W[rm]C[... and is happy capturing them like this.]
)(;W[ol]C[[KataGo variation.\]]
;B[ok]
;W[pl]
;B[di]
;W[eh]
;B[dg]
;W[ef]
;B[bk]
;W[fj]
;B[ck]
;W[ek]
)))(;B[di]C[The idea here is, black fights this.

[KataGo gives this move -3.1 pp for black.\]]
(;W[eh]
;B[dg]
;W[ef]
;B[bk]C[Basically, black's saying he's gonna live with this.]
;W[fj]
;B[ck]C[Black plays here.]
;W[ek]
;B[dj]
;W[bg]
;B[cf]C[Interesting. Is there some sort of capturing race going on?]
(;W[cg]C[So here...]
;B[ce]
;W[bf]C[... if white just blindly plays this...]
;B[fk]C[... black should probably do this first...]
(;W[el]
;B[fi]C[... and if black does this...]
;W[gj]C[... white runs into an issue, which I don't fully understand.]
(;B[gk]C[There's no way this is it.]
)(;B[hi]C[Black extending threatens the ladder.]
;W[hk]C[White needs to protect, probably like this...]
(;B[fe]C[... and then black should play here...]
)(;B[hg]TR[df]TR[ef]TR[gf]TR[fg]TR[eh]TR[ei]SQ[fi]SQ[hi]SQ[fk]C[... or something like this to surround the D14 stones, and this way black is kind of capturing them and playing a lot of forcing moves.]
)))(;W[fl]C[Even in this case, white probably could play this way.]
;B[gk]
;W[gj]
;B[hj]
;W[fi]
;B[el]C[I don't see why black couldn't play this way...]
;W[hk]
;B[gl]
;W[hl]
;B[gm]
;W[hm]C[... but you'll notice that way is looking to definitely force this fight.]
))(;W[gd]C[The AI wants to play this one.]
;B[gc]C[And I guess the idea is...]
;W[ce]C[... after this...]
;B[cg]
;W[bf]
(;B[de]C[... black can't cut.]
)(;B[bl]C[Black needs to play here...]
(;W[de]C[... and white just connects.]
)(;W[fk]C[Interesting. White probably plays on the outside, like a connection here to allow for thickness...]
;B[am]C[... and black's able to connect underneath.]
)))(;W[il]C[What the AI wants here, though, is to play a sente move...]
;B[jm]
;W[cg]
;B[fk]C[... and black cuts...]
;W[fl]C[... white ataris...]
;B[gk]
;W[gj]
;B[hj]
;W[fi]
;B[ik]
;W[el]C[... white connects...]
;B[ce]C[... black connects...]
;W[bf]C[... white connects, and we're still fighting this out.]
;B[fe]
;W[eg]
;B[hg]TR[il]C[Interesting. It's definitely not going to be an easy fight; and I'd say it's more or less difficult to read, especially if white needs to start with J8.]
))(;W[fj]C[[KataGo variation.\]]
;B[fi]
;W[eh]
;B[fk]
;W[dj]
;B[gj]
;W[dk]
;B[qm]
;W[pm]
;B[qk]
;W[rl]
;B[pl]
;W[ig]
;B[hm]
;W[ii]
;B[rk]
;W[ol]
;B[pk]
;W[rn]
;B[kg]
;W[kh]
;B[jh]
;W[ih]
;B[ji]
;W[jj]
;B[ij]
;W[jg]
;B[ki]
;W[lh]
;B[lg]
;W[ik]
;B[hj]
;W[nk]
;B[ok]
;W[jk]
)))(;W[gd]TR[rj]C[White says, "I realize there's a risk after S10..."

[KataGo gives this move -11 pp for white.\]]
(;B[pk]SQ[gc]SQ[gd]TR[pj]TR[ql]C["... but even if you cut the R8 stones off, I want something else in exchange, like G17."]
)(;B[gc]C[[KataGo variation.\]]
;W[ei]
;B[di]
;W[eh]
;B[dg]
;W[ef]
;B[fj]
;W[dj]
;B[dk]
;W[cj]
;B[ck]
;W[bi]
;B[bj]
;W[ci]
;B[bl]
;W[al]
;B[bk]
;W[cg]
)))(;B[cg]C[Maybe make this move...

[KataGo gives this move -13 pp for black and only 1 visit out of 178,965 playouts.\]]
;W[cf]
;B[cj]C[... and then take a base, but black kind of loses initiative. So if this is a close game, he makes a relatively strong group; but if it has a direction to run to, why would he try to make only a few points here?]
)(;B[fl]C[Black could play moves in the center to connect up.

[KataGo doesn't give this move any visits out of 178,965 playouts.\]]
)(;B[hk]C[But again, why would black do that?

[KataGo gives this move -7.1 pp for black and only 1 visit out of 178,965 playouts.\]]
)(;B[ef]C[Maybe black can do this...

[KataGo gives this move -22 pp for black.\]]
;W[eg]
(;B[dg]
;W[cf]TR[eb]TR[ec]TR[cd]TR[dd]TR[ed]TR[ef]C[... and try to fight this out? But black's gonna have some issues with the D16 group.]
(;B[ff]C[Ideally, he wants to play here.]
)(;B[fe]C[Black can play here...]
;W[fi]C[... but white's going to try to fight black here.]
;B[fj]
;W[ei]
;B[di]
;W[dj]C[This is gonna be good for white.]
))(;B[cf]C[[KataGo variation.\]]
;W[ce]
;B[dg]
;W[de]
;B[ee]
;W[fi]
;B[bf]
;W[ac]
;B[fj]
;W[ei]
;B[di]
;W[dj]
))(;B[qk]C[Black should play here; interesting. That is a better forcing move than the game, I guess.

[KataGo gives this move -2.1 pp for black.\]]
(;W[pk]
;B[qj]
;W[pl]C[White needs to protect somehow. If she connects here, it's not gonna be good.]
;B[rl]C[Black's gonna get this forcing move.]
;W[rm]
;B[rk]
;W[rn]C[And then if white just protects, black's played all this in sente...]
(;B[oh]C[... so black gets to come back and play in the center.]
)(;B[oi]TR[pf]TR[qf]C[Black probably even plays this, and you can see he's swallowing a big part of the center portion here.]
))(;W[nk]C[[KataGo variation.\]]
;B[mj]
;W[ol]
;B[nj]
;W[qj]
;B[fe]
;W[fi]
;B[fj]
;W[ei]
;B[di]
;W[eg]
;B[bk]
;W[gj]
;B[cg]
;W[cf]
;B[bg]
)))(;W[fi]C[White doesn't directly do this. I wonder if there is aji that would need to be protected.

[KataGo gives this move -5.2 pp for white.\]]
;B[fj]
;W[ei]
;B[di]
(;W[eg]TR[bk]C[Here, white has to protect this, and then black is a little stronger to play moves like B9.]
)(;W[cr]C[[KataGo variation.\]]
;B[br]
;W[eg]
;B[bk]
;W[dr]
;B[bs]
;W[qi]
;B[cf]
;W[ce]
;B[cg]
;W[de]
;B[jr]
;W[ir]
;B[lb]
;W[lc]
)))(;W[el]C[In this case, there is no roundabout move for white to protect.]
;B[hl]TR[en]C[Even here, black can still threaten to play the atari and then connect out.]
;W[lc]C[Let's say white plays a really gote move...]
;B[en]C[... we could see certain things. This isn't something black plays immediately, but the aji is there.]
;W[fo]C[For example here...]
(;B[fm]C[... black plays this to connect out. We can see that black is separating the white groups, so that is something for white to worry about.]
)(;B[fn]C[Potentially stuff like this as well...]
;W[cr]
;B[br]
;W[dr]
;B[bs]SQ[gl]TR[fp]C[... into the F4 atari, but white can go ahead and fix at G8.]
))(;W[lc]C[If white doesn't protect...]
;B[en]C[... and black plays here...]
;W[fo]
;B[em]C[... black is just gonna play this immediately...]
;W[dl]
;B[el]
;W[cj]
;B[ei]
;W[bh]C[... and then white's stuck protecting this group...]
;B[cg]C[... while black's separating white's stones.]
))(;B[cg]C[For example, potentially black could play here...

[KataGo gives this move -19 pp for black and only 1 visit out of 88,279 playouts.\]]
;W[cf]C[... force the connection...]
;B[dk]C[... and then make some sort of shape here. It's not the best, but black would have some shape.]
)(;B[fh]C[One idea is, black could attach...

[KataGo gives this move -2 pp for black.\]]
;W[gh]
(;B[fi]C[... and there are other ideas, too like, black should crawl.]
(;W[gi]C[If white were to extend...]
(;B[gj]C[... now there is some aji here.]
)(;B[gg]C[Black should definitely cut.]
;W[eg]C[White needs to fix the cutting shape...]
(;B[fj]C[... and then black can just extend...]
)(;B[gj]C[... or hane, and white's in trouble now.]
)))(;W[eg]C[So white needs to come back and fix this way...]
;B[gg]C[... that way, when black does cut...]
;W[eh]
;B[ei]
;W[gf]
;B[hg]
;W[gd]TR[eb]TR[bc]TR[ec]TR[cd]TR[dd]TR[ed]TR[dh]SQ[gh]C[... white plays here, going after the D16 stones. She gives up an outside stone for an attack on the top side, and then eventually comes back and attacks D12.
One thing to worry about though is, this is kind of a risky play.]
;B[gc]
;W[he]C[Let's say white comes here.]
;B[id]
;W[di]
;B[dj]
;W[ci]
;B[cj]
;W[bi]
;B[gi]C[Black takes.]
;W[ek]C[White has to add a move, strengthening her bottom side...]
;B[ej]
(;W[bj]C[... and then she has to come back here to protect.]
)(;W[cr]C[In this case, white making a small exchange first before losing sente is actually pretty good.]
;B[br]
;W[dr]
;B[bs]
;W[bj]
))(;W[gd]C[[KataGo variation.\]]
;B[gc]
;W[eg]
;B[gi]
;W[cr]
;B[br]
;W[dr]
;B[bs]
;W[ge]
;B[id]
;W[hh]
;B[hi]
;W[qi]
;B[ri]
))(;B[gi]C[But if black plays here...]
;W[eh]
;B[fi]
;W[ei]C[... he's asking to be cut in this case; a slippery slope.]
)))(;W[rg]TR[qb]TR[se]C[After taking in sente, black doesn't have to worry about white's forcing moves anymore.]
;B[qg]
))(;B[rc]C[The reason black's not doing this...

[KataGo gives this move -8.7 pp for black.\]]
;W[qb]
(;B[rb]
;W[pa]C[... and forcing this...]
(;B[rg]C[... is because he still has to eventually come back and take here.]
)(;B[of]C[Black could probably play this way.]
)(;B[se]C[But taking directly is one of the big ones, too.]
)(;B[lc]C[And if black does nothing, say for example he plays here...]
;W[rg]C[... white's gonna eventually be able to come back...]
;B[se]
;W[qg]C[... and play something like this...]
(;B[rh]
;W[ph]C[... and just let black connect underneath.]
)(;B[ph]C[If black jumps out...]
;W[rh]C[... this is a possibility.]
)))(;B[eh]C[[KataGo variation.\]]
;W[dh]
;B[di]
;W[ei]
;B[dj]
;W[ej]
;B[ek]
;W[dk]
;B[dg]
;W[ch]
;B[fh]
)))(;W[rd]C[If white just plays here...

[KataGo gives this move -28 pp for white.\]]
;B[pc]C[... black will connect...]
(;W[re]C[... and when white comes out...]
;B[rg]TR[rf]TR[qh]C[... black is gonna save the stones.]
;W[qb]C[[KataGo variation.\]]
;B[pa]
;W[kc]
;B[jd]
;W[kd]
;B[og]
;W[je]
;B[kb]
;W[lb]
;B[jb]
;W[md]
;B[me]
;W[mc]
)(;W[rg]C[So white has to come back...]
;B[re]
;W[qg]C[... and connect...]
(;B[oh]C[... and then black can just jump.]
)(;B[rh]C[Potentially even playing this way...]
;W[sh]
(;B[oh]C[... and then jumping here.]
)(;B[ph]C[Or extending...]
;W[ri]C[... and forcing the connect underneath...]
;B[nh]C[... and then black can jump again, which means white loses a lot of the corner stuff.]
)))))(;B[rh]TR[pj]C[Q10 kind of leaves other things for black, too.

[KataGo gives this move -20 pp for black.\]]
(;W[qh]C[For example, if white attaches...]
;B[qi]
;W[pi]
;B[qg]
;W[ph]
;B[rf]C[... black is going to get some normal shapes...]
;W[pg]
;B[rg]C[... however, if white plays normally, she's not only letting black take away her base, but also allowing him to add strength to the top side where white can't really invade it anymore.]
)(;W[rf]C[In some cases, we'll see stuff like white descending here.]
;B[ph]
(;W[oh]
(;B[oi]
;W[pi]
;B[og]
;W[qh]
;B[nh]
;W[pg]C[This ko will happen, and it leaves the top side open. It may not be ideal for black.]
;B[re]
;W[oc]
;B[od]
;W[lc]
)(;B[og]C[I think in most cases, we'll see stuff like this.]
;W[pg]
;B[oi]
;W[qh]
;B[nh]C[Black will take...]
;W[pi]C[... and then white will play the atari. I think this is the correct way of playing it.]
;B[]C[White could also undercut on the top side.]
;W[ob]
))(;W[qc]C[In some cases, white's actually just gonna look to play here, which is a possibility.]
)(;W[pi]C[This is a move I've never seen before; that's interesting.]
;B[qh]C[So the idea is, black connects here...]
;W[ne]TR[ph]TR[qh]TR[rh]C[... and then white plays here, where she's looking to trap black's stones.]
(;B[nh]C[So if black just jumps out...]
)(;B[og]C[... or protects in some way...]
)(;B[oh]C[(... obviously, the iron pillar is probably not the best way to do it...)]
;W[md]
;B[nc]
;W[mf]C[... maybe white just playing like this is enough...]
(;B[mh]C[... and then black needs to jump...]
;W[mc]C[... giving white full security here.]
)(;B[mc]
(;W[ni]C[Or white gets to play something like this.]
)(;W[mh]C[Or jump out.]
)(;W[ld]C[Probably extend first.]
;B[lc]
(;W[ni]C[White can probably play here, and then...]
;B[nh]
(;W[mh]TR[nh]TR[oh]TR[ph]TR[qh]TR[rh]C[... try to attack these stones.]
)(;W[mi]
;B[mh]
;W[lh]
;B[lg]
;W[mg]
;B[li]
;W[kh]C[Obviously, this isn't the best for white...]
;B[oi]
;W[oj]
;B[nj]C[... because black can escape.]
))(;W[mj]C[There are other methods like, white could attempt to play here...]
;B[lk]
;W[ni]C[... and now, this works...]
;B[nh]
;W[mh]TR[nh]TR[oh]TR[ph]TR[qh]TR[rh]C[... and the group kind of just ends up dying.]
))))))(;W[qi]C[In some cases, we could see this.]
;B[rf]C[It leads to less normal shape, but it does protect everything for white...]
;W[rd]
;B[re]
;W[oc]
;B[od]C[... and it would give white a reason to do stuff like this.]
)(;W[nk]C[[KataGo variation.\]]
;B[mj]
;W[nj]
;B[mi]
)))(;W[pi]C[There is no large difference with this move. If white were to play this one, there are some things she needs to look out for.

[KataGo gives this move -2.1 pp for white.\]]
(;B[rh]C[For example, black could play something like this still...]
;W[rg]C[... although it's not very useful.]
)(;B[qj]C[But black does have things like this that can come into play. This isn't really that great of an invasion, but the possibility is still there.]
(;W[qi]
;B[qk]
;W[pl]C[Some moves here could be difficult for black.]
;B[oj]
;W[pj]
;B[pk]
;W[ok]
;B[ol]
;W[rj]
;B[rk]
;W[sk]
;B[rl]
;W[rm]
;B[nk]
;W[sl]C[White's looking to squeeze under.]
)(;W[pj]C[White will probably crawl...]
;B[qk]
;W[pk]
;B[rl]
;W[qm]
;B[rh]C[... and black would need to find a way to live here, which is possible...]
;W[rg]
;B[qh]
;W[ph]
;B[rm]
;W[rn]
(;B[rj]C[... but this looks like it's gonna die.]
)(;B[qi]C[Potentially connect? But this would also die.]
)))(;B[qh]C[An invasion like this is possible.]
;W[ph]
;B[rf]
;W[rg]
;B[re]C[Black just forces this...]
;W[lc]
;B[rh]C[... and then later, he can come back to this...]
;W[qg]
;B[sg]C[... and then connect underneath, so that makes sense. The aji is there.]
)(;B[rf]C[Black just protects the top side...]
;W[rg]
;B[re]C[... and that's fine.]
;W[lc]C[[KataGo variation.\]]
;B[mb]
;W[eg]
;B[hl]
;W[le]
;B[hf]
;W[hg]
;B[ig]
;W[gf]
;B[gg]
;W[hh]
;B[ff]
)))(;B[qk]C[I'm kinda curious why black doesn't force something like this.

[KataGo gives this move -11 pp for black.\]]
;W[pk]
;B[qj]
(;W[pl]C[This should be fine for black.]
(;B[pj]C[Black turning apparently isn't okay.]
(;W[hc]C[Maybe the issue is white will come around and play up here.]
)(;W[gd]
)(;W[ic]C[I know sometimes attaching here could happen...]
;B[id]
;W[hd]
;B[hc]
;W[gc]
;B[ib]
;W[gd]C[... and we're fighting this. There are potentially some more issues.]
)(;W[qc]C[But jumping into the 3-3 is probably okay for white.]
))(;B[rl]
;W[rm]
;B[qf]TR[id]C[Then black defends here and white shoulder-hits at J16.]
;W[gd]C[The knight's move is normal.]
;B[ef]C[Black would need to run out here.]
;W[dg]
;B[gf]C[Maybe something like this.]
;W[id]
;B[hb]C[Black threatens to come underneath...]
;W[jd]C[... and then white pushes.]
;B[kc]
;W[kd]
;B[lc]
(;W[me]C[And this would turn into more of an average fight.]
)(;W[jg]C[You'll notice that white is actually full-on in the whole center area...]
(;B[eg]C[... and black is forced to run with this group.]
)(;B[gc]C[Black could come back...]
;W[hc]
;B[gb]C[... and kind of just kill the group, but he runs into some issues.]
;W[fd]
;B[fe]
;W[fc]
;B[fa]
(;W[hd]C[This is a possible move.]
)(;W[me]C[I imagine this.]
;B[ic]
;W[hd]C[Black gets the shape; white's relatively super-strong in the center, so all the points in the center go away for black.]
)))))(;W[nk]C[[KataGo variation.\]]
;B[mj]
;W[qc]
;B[pc]
;W[qd]
)))(;W[ec]C[I think in most cases, white would realize what black is trying to do...

[KataGo gives this move -6.1 pp for white.\]]
;B[fc]
(;W[fd]
;B[gc]
;W[db]C[... and then just try to attack black.]
(;B[gb]C[I think in normal cases, both players would try to just fight.]
;W[fe]C[White could definitely play this way.]
;B[dh]C[And black plays this...]
(;W[nc]C[... and then white could approach.]
)(;W[qc]C[Or even taking the corner is probably possible.]
)(;W[he]C[I think in some cases, white just jumps out...]
;B[jc]C[... and we kind of get this situation where we're all running...]
;W[df]
;B[be]TR[gb]TR[bc]TR[fc]TR[gc]TR[jc]TR[cd]TR[dd]TR[ed]SQ[fd]TR[pd]SQ[fe]SQ[he]SQ[df]TR[dh]TR[mk]TR[jl]TR[kl]C[... and this is gonna be a completely different but kind of more normal game where white is saying, "hey, you have a weak group; I have a weak group; but my weak group is kind of in the middle of your moyo, so you're not getting anything."]
))(;B[fe]C[Here, black could take this and go for the very large outside.]
))(;W[db]C[[KataGo variation.\]]
;B[gb]
;W[nc]
;B[ob]
;W[qf]
;B[kd]
;W[qb]
;B[oc]
)))(;B[ci]TR[cl]TR[eq]C[I'm assuming one of the reasons white is forced to play this way is that now when black tenukis...

[KataGo gives this move -0.8 pp for black.\]]
(;W[cr]
;B[br]
;W[dr]
;B[bs]C[... white can still get this, but now she still has the aji on the outside.]
;W[qc]C[For example...]
;B[en]
;W[fo]
;B[em]C[... black can come out like this later.]
)(;W[nc]C[[KataGo variation.\]]
;B[oc]
;W[nd]
;B[qf]
;W[gc]
;B[ei]
;W[qi]
;B[ob]
;W[rd]
;B[pe]
;W[nb]
;B[qk]
;W[pk]
;B[qj]
;W[pj]
;B[ri]
;W[rj]
;B[rk]
;W[rh]
;B[sj]
)))(;B[dr]C[Black could play the hane, but it's no longer needed.

[KataGo gives this move -8.7 pp for black.\]]
;W[er]
;B[cr]
;W[dh]C[[KataGo variation.\]]
;B[bc]
;W[bb]
;B[en]
;W[fo]
;B[eb]
;W[ec]
;B[fc]
;W[db]
;B[gb]
;W[fd]
;B[gc]
;W[fe]
;B[dg]
;W[eh]
;B[ch]
;W[ci]
;B[ff]
)(;B[gc]C[I imagine black can play here.

[KataGo gives this move -15 pp for black.\]]
;W[cr]
;B[br]
;W[dr]
;B[bs]
;W[nc]C[[KataGo variation.\]]
;B[oc]
)(;B[nc]C[Or black fixes.

[KataGo gives this move -17 pp for black.\]]
;W[cr]C[[KataGo variation.\]]
;B[br]
;W[dr]
;B[bs]
;W[gc]
;B[ch]
;W[qi]
;B[qf]
)(;B[qk]C[Essentially, with any move that black plays, he's gonna have to come back and live in the lower left.

[KataGo gives this move -14 pp for black.\]]
;W[cr]C[[KataGo variation.\]]
;B[br]
;W[dr]
;B[bs]
;W[pk]
;B[qj]
;W[pl]
;B[qg]
;W[dh]
;B[bc]
;W[bb]
)(;B[en]C[Black could probably play this...

[KataGo gives this move -7.7 pp for black.\]]
;W[fo]
(;B[dr]
;W[er]
;B[cr]
;W[dh]C[... but black's going to lose sente this way.]
;B[eq]C[And then if black ever plays this move...]
;W[ep]
;B[fr]
;W[fq]
;B[es]C[... he's basically asking to just play gote endgame.]
)(;B[ci]C[[KataGo variation.\]]
;W[qc]
;B[pc]
;W[cr]
;B[br]
;W[qd]
;B[qe]
;W[dr]
;B[bs]
;W[re]
;B[rf]
;W[qf]
;B[pe]
;W[rg]
;B[rd]
;W[sf]
;B[rc]
;W[gc]
;B[ei]
;W[pf]
;B[em]
))(;B[gd]C[If black were to tenuki here, as I've showed...

[KataGo doesn't give this move any visits out 469,762 playouts.\]]
;W[cr]
;B[br]
;W[dr]
;B[bs]TR[en]C[... white's always going to play this sequence. And if black goes for the E6 cut later...]
;W[gc]C[... for example, let's just say we have this shape...]
;B[he]
;W[ic]
;B[en]C[... now when black goes for the cut...]
;W[em]
;B[fn]
(;W[fm]C[... white can just probably play this way...]
)(;W[fo]C[... or even here; and you'll notice that white has this really nice shape on the outside.]
;B[fm]TR[en]TR[fn]C[And when black tries to save his stones...]
;W[el]C[... white is also pretty good here.]
)))(;W[cr]TR[dn]C[By extending up at D6 instead of hane-ing, white kind of forces black to accept the fact that he doesn't exactly have the greatest shape.

[KataGo gives this move -24 pp for white.\]]
(;B[br]
;W[dr]
)(;B[dr]C[[KataGo variation.\]]
;W[er]
;B[en]
;W[ds]
;B[cm]
;W[dm]
;B[cl]
;W[em]
;B[dl]
;W[gc]
;B[nc]
;W[qi]
;B[el]
;W[fm]
)))(;W[do]C[If white hanes...

[KataGo gives this move -14 pp for white.\]]
(;B[bn]
;W[cr]
;B[cm]
;W[dn]
;B[bl]
;W[bq]
;B[bp]
;W[ap]
;B[bo]C[... white's kind of giving black an option to play like so. White's going to get some sort of thickness on the bottom, while on the outside black has some more thickness.]
(;W[gc]C[Potentially, white could defend the top side.]
)(;W[dh]C[Or reduce the left side somehow; possibly like this.]
))(;B[dr]C[[KataGo variation.\]]
;W[er]
;B[bn]
;W[nc]
;B[oc]
;W[nd]
;B[qf]
;W[gc]
;B[cm]
;W[dn]
;B[nb]
;W[mb]
;B[ob]
)))(;B[qk]C[Attaching here is definitely an option. I would rather go for this trade.

[KataGo gives this move -1.9 pp for black.\]]
;W[pk]
(;B[qj]
;W[pl]TR[rl]C[In some cases, having S8 available is nice for black.]
(;B[gc]C[And I'd maybe play something like this.]
)(;B[qf]C[Or take a side.]
)(;B[pj]C[Maybe turn? Seems fine.]
))(;B[rl]C[Or even having something like this to crawl and remove white's space is okay as well; but there's no value in attacking a corner that's alive right now.]
)(;B[cq]C[[KataGo variation.\]]
;W[dq]
;B[cp]
;W[cn]
;B[co]
;W[dn]
;B[qj]
;W[pl]
;B[do]
;W[eo]
;B[cr]
;W[dr]
;B[bn]
;W[bm]
;B[bo]
;W[qc]
;B[qd]
;W[pc]
;B[oc]
;W[ob]
))(;B[ip]C[Of course, pushing and cutting immediately is not ideal; but if black plays here later...

[KataGo gives this move -13 pp for black.\]]
;W[hp]
;B[hq]
;W[gq]
;B[hr]
(;W[gr]
;B[ir]TR[iq]C[... white has to give up J3.]
)(;W[ir]C[If white tries to play like this, we're going to end up fighting this out and it looks pretty dicey; but it looks okay for white.]
))(;B[cn]C[In some cases, I would probably see players approach.

[KataGo gives this move -11 pp for black.\]]
;W[bo]C[[KataGo variation.\]]
;B[ck]
;W[gc]
;B[fq]
)(;B[cp]C[Or attach.

[KataGo gives this move -17 pp for black.\]]
;W[cq]C[[KataGo variation.\]]
;B[co]
;W[bq]
;B[ck]
;W[gc]
;B[qk]
;W[pk]
))(;B[kk]C[Say black played here. It doesn't change the dynamic all that much, except for the outside.

[KataGo gives this move -1.2 pp for black.\]]
;W[iq]
(;B[hl]C[Black needs to add an extra move.]
;W[mj]C[[KataGo variation.\]]
;B[nk]
;W[lj]
;B[lk]
;W[co]
;B[fq]
;W[gr]
;B[dn]
;W[cn]
;B[dl]
)(;B[cq]C[If black does something similar to the game...]
;W[dq]
;B[cp]
;W[do]
;B[bn]C[... say, something like this...]
(;W[jm]
;B[im]
;W[il]
;B[hm]TR[il]TR[jm]C[... then later in the game, white has the option of pushing and cutting.]
)(;W[il]C[Which means there's this particular weakness that black has to fix later.]
))))(;B[on]TR[ln]TR[mn]TR[no]TR[np]C[I think it's very odd that black doesn't just connect, because it makes white's four stones feel really awkward.

[KataGo gives this move -1.5 pp for black.\]]
;W[pm]TR[ln]TR[mn]TR[no]TR[np]C[In some cases, this is okay for black. White's shape consists of floating stones. What exactly are they doing?]
(;B[cq]C[Let's say, for example, black invades the corner...]
;W[dq]
;B[cp]
;W[do]
;B[bn]
(;W[jo]C[... in some cases, white could play stuff like this...]
;B[kn]TR[ln]TR[mn]TR[no]TR[np]C[... and just give up the stones.]
)(;W[ko]C[In other cases, white would play the hane...]
)(;W[ml]TR[ln]TR[mn]TR[no]TR[np]C[... or she would just jump out and try to gain some sort of feeling for the stones.]
)(;W[iq]TR[ln]TR[mn]TR[no]TR[np]C[In other cases, white would just play AROUND the O4 stones and tell black, "hey, go ahead and try to capture them!" But I would advise you not to play like this.]
))(;B[fq]TR[ln]TR[mn]TR[no]TR[np]C[Once white's shape is there, black is definitely going to try his best to make using the O4 stones absolutely difficult for white.]
;W[dn]
;B[eo]
;W[do]C[So for example, if white plays stuff like this...]
(;B[ip]C[... black will probably come back and fix...]
)(;B[go]C[... or something like this.]
)(;B[dk]C[I've seen some cases where black just takes this immediately.]
)(;B[dr]TR[lo]TR[mp]TR[nq]C[I would say any of these moves are okay for black. Playing towards his wall is probably slow...]
;W[dk]
;B[cq]C[... while more joseki-like moves are probably better if they're not that bad.]
)(;B[fm]C[In other cases, it might be worthwhile playing more unique moves; something like this...]
)(;B[gn]C[... or even here, saying, "I'm looking to take all this."]
)(;B[io]SQ[ln]SQ[mn]TR[lo]SQ[no]TR[mp]SQ[np]TR[nq]C[I've seen moves like this the AI has recommended where black has this really weird shape but it works well with the wall. Again, he's just saying, "hey, I'm gonna take all this territory; your stones look stupid."]
))(;B[qk]C[[KataGo variation.\]]
;W[iq]
;B[ok]
;W[lq]
;B[ko]
;W[ll]
;B[ml]
;W[io]
;B[kn]
;W[cn]
;B[qm]
)))(;W[fq]C[As white, I would take my sente, but leaving the joseki seems to not be good at the professional level.
If white just takes F3...

[KataGo gives this move -2.7 pp for white.\]]
;B[ql]C[... black is going to abuse the shape here...]
;W[pm]C[... and force white to fix. This kind of idea makes sense to me.]
(;B[pl]TR[ql]C[Since black has R8, he could block...]
;W[ol]
;B[om]
;W[qm]
;B[rm]
;W[rn]
;B[sn]
;W[ro]
;B[ok]C[... but that's not really the goal. Black has locked white in this corner...]
(;W[rl]
;B[rk]
;W[sm]C[... and black got the outside, which is pretty thick and nice.]
)(;W[gc]C[But black loses sente because of this perfect ladder-breaker; so in this case, he doesn't play that way.]
))(;B[gc]C[Or black can play the ladder-maker here.]
;W[cn]C[And if white were to play elsewhere again...]
;B[pl]C[... black's gonna block...]
;W[ol]
;B[om]
;W[qm]
;B[rm]
;W[rn]
;B[sn]
;W[ro]
;B[ok]C[... and now this situation's a lot better because black has the ladder-maker...]
;W[fc]
;B[fd]
;W[gd]
;B[hc]
;W[hd]
;B[id]
;W[ie]
;B[jd]
;W[je]C[... and it doesn't really matter what white does now.]
;B[kd]
;W[ke]
;B[le]
;W[gf]
;B[lf]
;W[nl]SQ[gd]SQ[hd]SQ[ie]SQ[je]SQ[ke]SQ[gf]TR[ol]C[Now if white brings out P8, she's already done damage to her own stones.]
)(;B[ok]C[[KataGo variation.\]]
;W[qm]
;B[cn]
;W[qc]
;B[qd]
;W[pc]
;B[nc]
;W[oc]
;B[od]
;W[nb]
;B[cp]
;W[cq]
;B[bq]
;W[dq]
))(;W[ql]TR[no]TR[np]C[White just protecting here first makes sense.
Black doesn't really need to re-capture the O4 stones, just because he's connected in a way.

[KataGo gives this move -3.2 pp for white.\]]
;B[fq]
(;W[on]C[So for example if white plays here...]
;B[nn]
;W[mo]
;B[lo]C[... this ladder works for black, so white immediately loses a lot just trying to do this.]
)(;W[ln]C[If white plays here immediately...]
;B[lo]
;W[mn]TR[ql]C[... it's not gonna be the same thing, because white has R8.]
;B[on]C[Black's just going to connect, and because he has this strong structure, he's okay with this.]
;W[jo]
;B[pm]C[In some cases, black can play here later...]
;W[qm]
;B[ro]C[... and then white has some aji.]
)(;W[cn]C[[KataGo variation.\]]
;B[dq]
;W[cq]
;B[cr]
;W[eq]
;B[dr]
;W[ep]
;B[er]
;W[go]
;B[cj]
;W[qc]
)))(;W[qp]C[Depending on the game, we could see something like this happen.

[KataGo gives this move -0.4 pp for white.\]]
(;B[qk]
;W[pl]
;B[ql]
;W[kp]
;B[mo]C[Black pushes up.]
;W[pn]
;B[lq]
;W[kq]C[White blocks.]
;B[mm]C[Black jumps.]
;W[pm]C[White connects.]
;B[ro]C[Black blocks.]
;W[oj]TR[pd]TR[dp]C[And then we have a fight; this is also a joseki.
In this case, it's probably not good for white to play this way since black already has a stone at Q16; it would be better if the joseki was facing the other direction. But white's bottom side is pretty good, while black's is not.]
(;B[pi]C[So you'll see that black needs to add a stone here.]
)(;B[hp]C[Pincering the bottom is not necessary.]
)(;B[iq]C[Essentially, I imagine white's going to ignore...]
;W[qi]TR[qk]TR[ql]TR[qn]TR[ro]C[... and immediately play this, attacking the group.]
))(;B[ql]C[[KataGo variation.\]]
;W[qd]
;B[qc]
;W[qe]
;B[pc]
;W[qi]
;B[ro]
;W[nm]
;B[lq]
;W[rm]
;B[ol]
;W[nl]
;B[op]
;W[pn]
;B[oo]
;W[qm]
;B[po]
;W[qo]
;B[rn]
;W[pm]
;B[qr]
;W[pe]
;B[pi]
;W[qj]
;B[cn]
;W[ne]
;B[mc]
;W[cj]
;B[fq]
;W[fp]
))(;W[pn]C[The AI doesn't play here.

[KataGo gives this move -2.5 pp for white.\]]
;B[op]
;W[po]
;B[qr]
;W[rp]
;B[rq]
;W[qp]C[The normal follow-up is this pattern.]
(;B[qk]C[If black jumps, he gives white extra thickness.]
;W[rr]C[White will take.]
;B[rs]
;W[sq]C[And then black takes sente again. So white has this really strong local shape, while black has some weaker shapes on the sides.]
;B[fq]C[I imagine black will play on the bottom side.]
)(;B[rr]C[However, if black just connects, he's forcing white to choose how to protect her stones.]
(;W[qk]C[This is fast, but it leaves some aji.]
(;B[pm]C[Black has the option of playing here immediately.]
(;W[pl]
;B[om]
;W[qm]
;B[nn]C[For example like this.]
;W[mo]
;B[oo]
;W[rn]C[And then white needs to protect.]
;B[rm]C[Black doesn't need to exchange this atari.]
;W[ql]
;B[sn]
;W[ro]SQ[rm]TR[on]SQ[sn]C[In a way, black's trying to stop white from playing P6; but at the same time he's wasting ko threats, so there's no real reason to play these exchanges.]
)(;W[nm]C[[KataGo variation.\]]
;B[ql]
;W[pk]
;B[ol]
;W[mo]
;B[lp]
;W[mk]
;B[ok]
;W[oj]
;B[nj]
))(;B[fq]C[Or black can just approach.]
)(;B[cq]C[3-3 would work as well.]
))(;W[ql]C[This is a little close and we consider it slow.]
))))(;W[ec]C[I know in some cases, you might see this, but most players don't ever press like this.

[KataGo gives this move -0.8 percentage points winrate (pp) for white.\]]
(;B[gc]
;W[fc]
;B[fd]
;W[gb]
;B[hc]
;W[hb]C[This is pretty normal.]
(;B[cn]C[And then black will build this large area.]
)(;B[cq]C[Black can invade.]
)(;B[nq]TR[qn]C[Black can double-approach, which I imagine is probably the best move to play, just because he already has an approach stone which now becomes stronger.]
))(;B[fc]C[[KataGo variation.\]]
;W[fb]
;B[nq]
;W[pn]
;B[pm]
;W[on]
;B[qp]
;W[qm]
;B[ro]
;W[ql]
;B[pq]
;W[qq]
;B[rq]
;W[rn]
;B[qo]
;W[oq]
;B[qr]
;W[np]
;B[mq]
;W[qf]
;B[fq]
;W[nc]
;B[pf]
;W[pg]
)))