(;FF[4]
CA[UTF-8]
GM[1]
GN[KataGo 7 komi self-play - game 116]
PC[https://online-go.com/review/1036390]
PB[KataGo]
PW[KataGo]
BR[9p]
WR[9p]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[7]
RU[NZ]

;B[qd]
;W[dd]
;B[dq]
;W[pp]
(;B[nc]C[Black takes one of the corners; white's gonna take the other.

[All comments on this game by Tang Jie (CHN 5d), except bracketed comments by Maharani.\]]
;W[do]C[This is just going to revert to basically any joseki.]
(;B[cm]
;W[cq]
;B[cp]
;W[dp]
;B[co]
;W[cn]C[Fairly natural.]
(;B[bq]
;W[bn]SQ[bq]TR[cq]C[That's interesting. I've learned something — white can actually give up C3 when black plays the B3 atari.]
(;B[cr]C[Black takes. KataGo prefers this over the joseki. That's cool to learn.]
;W[dm]
;B[cc]C[And then black takes the corner.]
(;W[dc]
;B[cd]
;W[cf]
;B[ce]
;W[de]
;B[bf]
;W[cb]
(;B[cg]
;W[df]
;B[bh]C[Black goes for this. That makes sense.]
;W[bc]
(;B[ad]TR[pd]C[Black jumps, basically just ending this position. I imagine white just probably attaches at Q16 next.]
(;W[pd]C[I was correct. Now the question is, which way does black play? Does he play from the outside?]
(;B[pc]C[In the actual game, black plays the hane and goes for the other side.]
;W[qe]
;B[od]
;W[pe]
;B[rd]
;W[oe]
;B[ne]
;W[nf]
(;B[me]
;W[mf]
;B[le]C[Instead, black opts for this.]
(;W[ic]TR[cb]TR[bc]TR[dc]TR[dd]TR[de]TR[cf]TR[df]C[White stops black's ability to attack the D17 group efficiently.]
;B[re]
(;W[qn]C[White comes here.]
(;B[ph]TR[pd]TR[oe]TR[pe]TR[qe]SQ[qn]C[Black attacks the Q15 stones, but this side's really not that large anymore, especially with the R6 stone.]
;W[lq]TR[pd]TR[oe]TR[pe]TR[qe]C[And white ignores. In the top right josekis, white will actually sacrifice the Q15 stones to gain an extra move on the outside.]
(;B[gp]TR[dm]TR[bn]TR[cn]SQ[jn]SQ[kn]TR[do]SQ[ho]SQ[io]SQ[jo]SQ[ko]TR[dp]C[This is a move I'm not really expecting, but it makes sense. Black is starting to attack the D5 group. G4 also acts towards the center.]
(;W[nj]C[This move is really odd.]
(;B[ck]C[Black plays a pretty important move.]
(;W[cl]C[I think black will probably ignore this move more than likely.]
(;B[qk]C[Maybe starting this fight is not good for black, though?]
;W[hp]C[This is an interesting attach.]
;B[lp]TR[qk]TR[hp]C[Both sides ignore. I'm gonna be honest with you — I don't know about this one.]
(;W[mq]
;B[ho]TR[gp]SQ[lq]SQ[mq]
;W[gq]
;B[ip]
;W[hq]
;B[mp]C[This makes sense; black's going for some outside influence. Black has a lot of territory, but white still has center control.]
;W[kq]
;B[jo]
;W[in]
;B[io]
;W[fp]
(;B[nh]TR[fp]C[Black finally ignores and jumps.]
;W[lm]TR[ho]TR[io]TR[jo]TR[gp]TR[ip]TR[lp]TR[mp]C[White responds by attacking the bottom group.]
;B[go]C[Black then connects.]
(;W[iq]C[White responds, that also makes sense. Blocking a potential cut is pretty important.]
(;B[no]
;W[pj]TR[qk]C[White threatens to cut off R9.]
;B[qj]
;W[mn]C[White is still attacking, and I think black needs to come back and basically fix his position.]
;B[pm]C[Maybe black still threatens to take the stones out. These kind of fights are a little hard on me, 'cause you're floating in the center and there's no real direction to go.]
(;W[om]
;B[pn]
;W[on]
;B[po]
;W[oo]
;B[qp]
;W[qo]C[So basically, white is gonna be giving up the corner...]
;B[qq]
;W[pl]
;B[qm]
;W[ql]
;B[rm]
;W[rl]
;B[ro]
;W[pq]
;B[en]SQ[pd]SQ[oe]SQ[pe]SQ[qe]SQ[mf]SQ[nf]MA[pm]MA[qm]MA[rm]MA[pn]TR[go]TR[ho]TR[io]TR[jo]TR[no]MA[po]MA[ro]TR[gp]TR[ip]TR[lp]TR[mp]MA[qp]MA[qq]C[... for the attack on these stones. Wow, okay. So essentially, black has potential to capture the P15 stones; he got a relatively nice corner; and white now needs to attack the K5 stones for profit.]
;W[qr]C[White ignores — classic.]
;B[rr]
;W[rq]
;B[rp]
;W[rs]
;B[sr]
;W[dk]
;B[dn]
;W[em]
;B[fn]
;W[ep]
;B[kp]
;W[il]
(;B[jm]C[But maybe there's a better way of handling this.]
;W[jl]C[White covers.]
(;B[hl]C[This is a tesuji and a half.]
;W[cj]
(;B[bb]SQ[cc]SQ[ad]SQ[cd]SQ[ce]SQ[bf]SQ[cg]SQ[bh]TR[cj]C[These are pretty odd exchanges, to be honest. This group isn't really gonna be dying soon.]
;W[og]TR[pd]TR[oe]TR[pe]TR[qe]TR[mf]TR[nf]SQ[hl]SQ[jm]SQ[dn]SQ[en]SQ[fn]SQ[go]SQ[ho]SQ[io]SQ[jo]SQ[no]SQ[gp]SQ[ip]SQ[kp]SQ[lp]SQ[mp]C[So white finally comes out with these stones. I guess at this point, both black and white recognize that it's actually very difficult to attack the K5 stones; so now, white needs to make the game slightly more complicated.]
;B[pi]C[Black answers here.]
;W[hk]
;B[gl]
;W[im]
;B[gk]C[The turn makes sense.]
;W[hj]
;B[gj]TR[cj]TR[dk]TR[cl]TR[dm]TR[em]TR[bn]TR[cn]C[With the C8 group being alive, black doesn't have anything really to lean on.]
;W[er]C[This is just a sente move to live.]
;B[eq]
;W[fq]
;B[hi]
(;W[ii]
(;B[hh]C[Black just needs to extend.]
(;W[ih]
;B[hg]TR[hh]TR[hi]C[These are just forcing moves.]
;W[ig]
;B[op]TR[pp]TR[pq]TR[qr]TR[rs]C[This is definitely a timing move. Black's finally cutting the Q4 group off. This is sente.]
(;W[or]C[White protects; that's pretty good.]
;B[ni]
;W[lf]
;B[mj]
;W[mk]
;B[eh]
;W[lj]
;B[mi]
;W[hf]C[So essentially, all the groups are connected up now and it's really just endgame at this point.]
;B[gf]
;W[dh]
;B[lk]MA[gf]MA[hg]SQ[dh]MA[eh]MA[hh]MA[hi]MA[gj]TR[nj]TR[pj]MA[gk]TR[mk]MA[gl]MA[hl]TR[pl]TR[ql]TR[rl]MA[jm]TR[lm]TR[om]MA[dn]MA[en]MA[fn]TR[mn]TR[on]MA[go]MA[ho]MA[io]MA[jo]MA[no]TR[oo]MA[gp]MA[ip]MA[kp]MA[lp]MA[mp]MA[op]C[Unless you completely ignore your opponent. This has to be aiming at the P7 stones. Essentially, white D12 cutting off black's large G8 group doesn't mean anything; black has to connect it up by attacking the P7 stones.]
;W[kj]
;B[dg]C[Black protects.]
;W[bo]
;B[dr]C[And protects.]
;W[ek]TR[fm]TR[gm]TR[hm]C[Forcing move; looking at cutting here.]
(;B[fk]C[That would work.]
(;W[oj]C[White connects to fix, forcing black to come back and live.]
;B[kf]
;W[lh]
;B[qf]
;W[fh]
;B[fi]
;W[fg]
;B[eg]
;W[ff]C[The plot thickens. This whole fight on the top side is rather interesting.]
;B[ge]C[Black extends.]
;W[gg]C[White wants to cut.]
;B[if]C[What?]
;W[he]C[This doesn't even work for black!]
;B[hd]
;W[ie]
;B[id]
;W[je]
;B[fe]TR[hg]TR[hh]TR[hi]C[Oh I see, he's literally giving up three stones.]
;W[gi]
;B[ej]
;W[gc]
(;B[fc]SQ[cb]SQ[bc]SQ[dc]TR[gc]TR[ic]SQ[dd]SQ[de]SQ[cf]SQ[df]C[Black actually wants to capture the top side, not the corner stones.]
;W[ab]C[It's a little more complicated than the variation.]
;B[ef]
;W[gh]C[So white does come back and capture!]
(;B[eb]C[Black threatens.]
;W[gd]C[So the top side's pretty big.]
;B[fd]
;W[gb]
;B[db]
;W[sm]
;B[rn]
;W[lc]C[This doesn't seem like a very good trade for white.]
;B[ke]
;W[mb]MA[qa]MA[ra]MA[sa]TR[ab]TR[cb]MA[qb]MA[rb]MA[sb]TR[bc]MA[qc]MA[rc]MA[sc]SQ[si]C[White does destroy a lot of the top side potential. So let's do a count: Black's top left corner is 26 points if white is dead, plus 2 points in the center; the top right corner is 14 points; the bottom right corner is 8 points; and the bottom left corner is 6 points — black has 54 points total. White's bottom side is 18 points; the center is 28 points, plus 7 points komi — white has 53 points total. But white looks like she has better endgame, especially since the C18 group is not completely captured; there's a monkey jump at T11; and black's top right area can be reduced even more — so I can see white winning in this position.]
(;B[kc]
;W[kb]
(;B[pg]TR[pd]TR[oe]TR[pe]TR[qe]C[Black threatens the Q15 stones.]
;W[ba]C[White lives here.]
;B[jd]TR[gb]TR[kb]TR[mb]TR[gc]TR[ic]TR[lc]TR[gd]SQ[he]SQ[ie]SQ[je]SQ[hf]C[Black comes back and fixes, interestingly enough; threatening the life of the J17 and J15 groups.]
;W[jc]
;B[jf]
;W[bd]C[White plays like this; makes sense.]
;B[be]
;W[hg]
;B[kd]C[A lot of sente moves going on here...]
;W[nb]
;B[ob]C[... so black actually is able to secure more points here.]
;W[of]
;B[li]
;W[kh]
(;B[ea]C[Oh, that's interesting; okay. I feel like black had a pretty good top side going, but now he self-implodes with this move, so my evaluation was incorrect.]
(;W[fb]TR[ec]C[So white plays this move, which threatens to cut at E17.]
(;B[ca]C[Black starts the ko immediately, and we begin basically the end of the game. I wouldn't have any confidence going into this, unless I counted the ko threats; but this is large.]
;W[da]
(;B[nq]TR[pp]TR[pq]TR[rq]TR[or]TR[qr]TR[rs]C[Black plays this ko threat, threatening to capture the R2 group.]
;W[nr]
;B[ca]
(;W[bp]C[This move is actually rather unfortunate. Maybe it's because there are more ko threats involved this way.]
;B[fr]
;W[da]
;B[ki]C[That's sente.]
;W[ji]
;B[ca]
;W[cq]
(;B[cp]TR[cq]C[It makes sense to come back and capture.]
;W[da]
;B[jq]
;W[jr]
;B[ca]
;W[fm]C[Now we're getting into some serious ko threats.]
;B[gm]
;W[da]
;B[ml]C[This is just a really big atari.]
;W[nk]
;B[ca]
;W[gr]C[Big atari.]
;B[es]
;W[da]
;B[ln]C[Black threatens to cut off all the things. This is a huge, huge ko threat.]
(;W[kn]
;B[ca]
;W[qb]
(;B[bb]
;W[qc]C[This move feels wrong. It seems like a desperate ko threat.]
;B[pb]
;W[cb]
;B[ec]SQ[ba]TR[da]TR[ab]SQ[cb]TR[bc]TR[bd]C[Black connects. Now the only risk remaining for black in this ko is that white lives in the corner with a few points.]
;W[da]
;B[jn]
;W[km]
;B[ca]C[Now this is a flower ko for black. He's now threatening to take away lots of points.]
;W[hc]
(;B[rb]C[This seems suspicious.]
;W[da]
;B[mr]
;W[lr]
;B[ca]
;W[sk]
(;B[dj]C[That's interesting. Black just ignores and plays here. This has to be about black having run out of ko threats. Now it feels like black is losing.]
;W[da]
;B[bk]C[Now black has a bunch of ko threats here.]
;W[bj]
;B[ca]
;W[ri]
;B[bl]C[This part of the game looks really weird. This is where the AI starts playing some really weird moves. Black ignores everything on the right side and loses all the territory.]
;W[bm]
;B[qi]
;W[rg]
;B[rf]
;W[ci]TR[dc]TR[dd]TR[de]TR[cf]TR[df]SQ[rg]SQ[ri]SQ[sk]C[I feel like black was winning this game when he destroyed the top side, but the reduction on the right side is huge.]
;B[el]C[There's nothing natural about this to me.]
;W[dl]
;B[mc]
;W[oa]
;B[na]
;W[ma]
;B[qa]
;W[pk]
;B[jg]
;W[jh]
;B[lb]
;W[di]
;B[kr]C[What?! Are you seeing this? This is a move that an AI plays when it's losing. It's sente, but this is so bad. Black has to be losing.]
;W[ks]
;B[pr]
;W[ps]
;B[ls]
;W[ms]
;B[ei]
;W[la]
;B[sj]
;W[rj]
;B[kk]
;W[jj]
;B[lg]
;W[mg]
;B[ib]
;W[ja]
;B[mm]
;W[nn]C[White 95 % (KataGo)

-- chat --
Maharani: Video review by Tang Jie (CHN 5d): https://www.twitch.tv/videos/1835353462
]
)(;B[ri]TR[sk]C[If black responds to T9...

[KataGo gives this move -1.5 pp for black.\]]
;W[da]TR[ls]C[... white plays here, and black only has a few more ko threats around M1, but maybe he doesn't need to play those.]
;B[kr]C[[KataGo variation.\]]
;W[ks]
;B[ca]
;W[si]
;B[sh]
;W[da]
;B[pr]
;W[ps]
;B[ca]
;W[sj]
;B[rh]
;W[da]
;B[ls]
;W[jp]
;B[ca]
;W[oq]
;B[np]
;W[ko]
;B[jq]
;W[qa]
;B[rc]
;W[jp]
;B[nn]
;W[nm]
;B[jq]
;W[oa]
;B[ra]
;W[jp]
;B[ol]
;W[nl]
;B[jq]
;W[ms]
;B[jp]
;W[da]
;B[pk]
;W[ok]
;B[ca]
;W[aq]
;B[ar]
;W[da]
;B[ae]
;W[ac]
;B[ca]
;W[hn]
))(;B[da]C[I'm not sure about this one. If black just connects...

[KataGo gives this move -26 pp for black.\]]
(;W[qa]C[... white's gotta play here.]
;B[pa]
;W[na]
;B[rc]
;W[oa]
;B[oc]
;W[nd]
;B[md]
;W[mc]
;B[nd]
;W[kg]C[There's nothing for white.]
)(;W[pa]C[What am I missing?]
)(;W[rb]C[Some sort of tesuji in the corner with this?]
;B[mc]C[Can't black just get an eye here? Maybe it's an eye versus no eye.]
)(;W[oa]C[[KataGo variation.\]]
;B[pa]
;W[nd]
;B[md]
;W[mc]
;B[na]
;W[jg]
;B[ma]
;W[lb]
;B[jb]
)))(;B[ec]C[What if black just plays here now?

[KataGo gives this move -2.8 pp for black.\]]
;W[da]
(;B[hc]
;W[pb]TR[ec]C[Then white has stuff like this. I guess E17 changes some things.]
;B[oa]
;W[qc]
;B[oc]
;W[mc]
;B[rb]
)(;B[jn]C[[KataGo variation.\]]
;W[km]
;B[ca]
;W[qc]
;B[pb]
;W[da]
;B[fa]
;W[ib]
;B[ca]
;W[mc]
;B[rb]
;W[da]
;B[ga]
;W[ha]
;B[ca]
;W[sj]
;B[ri]
;W[da]
;B[nn]
;W[nm]
;B[ca]
;W[si]
;B[sh]
;W[da]
;B[mm]
;W[lo]
)))(;W[ca]C[[KataGo gives this move -29 pp for white.\]]
(;B[ll]C[Connecting here is very big.]
(;W[mm]C[Can white connect?]
(;B[nl]C[And then here?]
;W[ol]C[There's no way this works for black.]
)(;B[jj]
;W[kk]
;B[kl]TR[jj]C[Instead, black plays these ataris...]
;W[jk]
;B[km]TR[nj]TR[oj]TR[pj]TR[mk]TR[nk]TR[pl]TR[ql]TR[rl]TR[lm]TR[mm]TR[om]TR[sm]TR[mn]TR[on]TR[oo]C[... and then the whole white thing is cut off. That's sick. I was wondering what was going on; now it makes sense.]
))(;W[km]
;B[mm]C[Probably just here?]
;W[nn]
;B[kl]C[And then like this.]
(;W[jn]
;B[kn]
)(;W[kn]C[If white plays here...]
;B[jn]C[... this is an atari.]
;W[lo]
;B[jj]TR[kj]TR[lj]TR[nj]TR[oj]TR[pj]TR[mk]TR[nk]TR[pl]TR[ql]TR[rl]TR[km]TR[lm]TR[om]TR[sm]TR[kn]TR[mn]TR[nn]TR[on]TR[lo]TR[oo]C[And then black would play here and capture the whole thing.]
)))(;B[mm]C[[KataGo variation.\]]
;W[ll]
;B[kk]
;W[kl]
;B[jj]
;W[nn]
;B[ec]
;W[sj]
)))(;B[bb]C[Because if black takes...

[KataGo gives this move -7.7 pp for black.\]]
(;W[br]C[... white plays here.]
;B[cp]
;W[aq]
;B[es]
;W[cs]
;B[gr]
;W[hr]C[White just threatens all the things here...]
;B[gs]
;W[cb]C[... and then comes back and takes.]
(;B[da]C[Black can't really connect...]
;W[ec]C[... because, well, there's still this.]
;B[bb]
)(;B[ec]C[Black can play here...]
;W[da]SQ[ba]SQ[ab]SQ[cb]SQ[bc]TR[dc]SQ[bd]TR[dd]TR[de]TR[cf]TR[df]C[... which guarantees that black captures the D14 stones, but doesn't guarantee that he kills the corner.]
))(;W[es]C[[KataGo variation.\]]
;B[cp]
;W[gr]
;B[ds]
;W[fs]
;B[bs]
;W[qb]
;B[qc]
;W[oa]
;B[pa]
;W[na]
;B[pb]
;W[cb]
;B[jq]
;W[jr]
;B[bb]
;W[sj]
;B[ri]
;W[cb]
;B[kr]
;W[lr]
)))(;W[fr]C[White would actually like to connect here in sente.

[KataGo gives this move -16 pp for white.\]]
;B[bp]C[Black has to answer here.]
;W[da]C[And if white takes...]
(;B[bm]C[... black can play here.]
)(;B[ki]C[[KataGo variation.\]]
;W[ji]
;B[ca]
;W[qb]
;B[qc]
;W[da]
;B[ml]
;W[nk]
;B[ca]
;W[oa]
)))(;B[oq]C[Let's say black plays something like this.

[KataGo gives this move -38 pp for black.\]]
;W[ca]C[When white wins this ko...]
(;B[pr]
;W[ec]TR[ea]TR[db]TR[eb]TR[dc]TR[dd]TR[de]SQ[cf]TR[df]C[... white captures the E18 group and connects everything. This is 22 points or something, because E17 is sente, too.]
)(;B[ec]C[[KataGo variation.\]]
;W[pr]
;B[jq]
)))(;B[ga]C[But also, with something like this...

[KataGo gives this move -18 pp for black.\]]
(;W[hb]C[... white can just block here now.]
)(;W[ib]C[[KataGo variation.\]]
;B[ca]
;W[da]
;B[ki]
;W[ji]
;B[ca]
;W[bp]
;B[fr]
;W[da]
)))(;W[ca]C[So what happens if white fixes here?

[KataGo gives this move -20 pp for white.\]]
(;B[ga]
;W[ha]
;B[hb]C[The deal is this move.]
(;W[hc]
;B[ia]
;W[ja]C[White could try this...]
;B[fb]C[... but then black plays here.]
;W[jb]
;B[ha]C[And I think white can't live.]
;W[la]
;B[mc]TR[ja]TR[la]TR[gb]TR[jb]TR[kb]TR[mb]TR[nb]TR[gc]TR[hc]TR[ic]TR[jc]TR[lc]TR[gd]C[I guess white does live, but with much fewer points.]
)(;W[fa]C[So here, if white takes...]
;B[hc]
;W[ib]C[... white has this...]
;B[fb]
;W[ia]TR[fa]TR[ha]TR[gb]TR[ib]TR[gc]TR[ic]TR[jc]TR[gd]C[... but then these stones get squeezed.]
;B[ga]
;W[mc]TR[fa]TR[gb]TR[gc]TR[gd]C[And then white owes a move, and has lost a lot of points here.]
))(;B[ia]C[[KataGo variation.\]]
;W[ja]
;B[ga]
;W[hc]
;B[fb]
;W[la]
;B[fr]
;W[gr]
;B[es]
;W[oa]
;B[pa]
;W[na]
)))(;B[ki]C[[KataGo gives this move -16 pp for black.\]]
;W[ji]C[White is forced to come back and fix.]
;B[pk]C[[KataGo variation.\]]
;W[ok]
;B[rk]
;W[qb]
;B[sk]
;W[qc]
;B[pa]
;W[mc]
;B[nd]
;W[fr]
;B[bp]
;W[di]
;B[ei]
))(;B[jd]C[Black could play this sooner.

[KataGo gives this move -4.7 pp for black.\]]
;W[jc]C[[KataGo variation.\]]
;B[oq]
;W[pr]
;B[pg]
;W[kd]
;B[ca]
;W[of]
;B[li]
;W[kh]
;B[nb]
;W[es]
;B[bp]
;W[na]
;B[oa]
;W[ma]
;B[pb]
))(;B[ca]C[When black comes back here, the whole top left is destroyed.

[KataGo gives this move -44 pp for black.\]]
;W[ob]C[[KataGo variation.\]]
;B[oc]
;W[pg]
;B[qg]
;W[nb]
;B[li]
;W[kh]
;B[ki]
;W[ji]
;B[ml]
;W[nk]
;B[kl]
))(;B[db]C[I guess black doesn't have this...

[KataGo gives this move -0.4 pp for black.\]]
(;W[eb]
(;B[ca]
;W[fb]
;B[ec]
;W[fd]TR[dc]TR[dd]TR[de]TR[cf]TR[df]C[... because black can't capture.]
)(;B[fb]C[And if black does this...]
(;W[da]C[... white does capture, and that means white's alive.]
(;B[jd]C[But black can extend to try to take the whole top.]
(;W[gb]
;B[fa]
(;W[fd]C[I wanna play here.]
;B[gd]
;W[ed]
;B[hc]TR[ee]C[This doesn't seem like black's forced to connect at E15.]
)(;W[gd]
;B[fd]
))(;W[gd]
;B[fd]
;W[hc]
;B[kd]
;W[gb]C[Oh.]
;B[fa]C[I guess like this.]
;W[ee]C[And white can cut like this.]
;B[jb]
;W[ga]
;B[ib]
;W[ec]
;B[jc]
;W[ea]TR[fa]TR[fb]TR[fc]TR[fd]TR[fe]TR[ge]TR[gf]C[White captures these stones; okay.]
))(;B[gd]C[If black connects...]
;W[jd]C[... white just turns.]
;B[hc]C[And even if black plays like this...]
;W[ib]
;B[ee]TR[da]TR[ab]TR[cb]TR[eb]TR[bc]TR[dc]TR[dd]TR[de]TR[cf]TR[df]C[... he needs to come back and fix. White's alive in the corner and gets the better end of the deal.]
))(;W[gb]C[Maybe I'm missing something.]
;B[ca]C[If black captures...]
;W[fa]C[... and then play here.]
;B[ec]
;W[fd]
;B[ea]
(;W[ee]C[But white can't connect here.]
)(;W[gd]C[So white plays the atari...]
;B[ee]
;W[ed]C[Atari...]
;B[ga]
;W[ib]C[... and then white comes back here... okay.]
))))(;W[ba]C[[KataGo variation.\]]
;B[eb]
;W[gd]
;B[fd]
;W[gb]
;B[kc]
;W[bd]
;B[be]
;W[kd]
;B[oq]
;W[pr]
;B[lg]
;W[mg]
;B[ke]
;W[jd]
;B[kg]
;W[mh]
;B[jb]
;W[ld]
;B[mc]
;W[es]
;B[bp]
;W[pg]
;B[qg]
;W[sm]
;B[rn]
;W[sj]
;B[ri]
;W[di]
;B[ei]
;W[ib]
;B[lc]
;W[bj]
;B[dj]
;W[ci]
)))(;B[ef]C[Black could play here in sente.

[KataGo gives this move -8 pp for black.\]]
(;W[gh]
(;B[fc]C[But there's really no need.]
;W[fb]
;B[gb]C[I'm actually not certain what white does. This is very interesting.]
)(;B[eb]C[[KataGo variation.\]]
;W[db]
;B[fc]
;W[fd]
;B[ed]
;W[fb]
;B[gd]
;W[ec]
;B[gb]
;W[fd]
;B[jq]
;W[jr]
;B[fc]
;W[ea]
;B[hc]
;W[jd]
;B[ab]
;W[ca]
;B[pg]
;W[of]
;B[ke]
;W[ib]
;B[ee]
))(;W[gd]C[Maybe white just ignores.]
;B[gh]C[Black takes.]
;W[jd]TR[hd]TR[id]C[Now the J16 stones are damaged.]
;B[db]
;W[eb]
;B[ca]TR[ke]C[White should be connected, and she can either cut at L15...]
;W[fr]C[... or go back to a rather large move now; probably connect.]
;B[bp]C[Force this.]
)))(;W[di]C[Basically, if white doesn't fix...]
;B[nk]C[... just something like this.]
;W[ml]
;B[oj]C[And then probably just take.]
;W[nl]TR[nh]TR[ph]TR[mi]TR[ni]TR[pi]TR[mj]TR[oj]TR[qj]TR[nk]TR[qk]C[Black lives locally.]
))(;B[fm]C[Black needs to come back and fix.

[KataGo gives this move -7.1 pp for black.\]]
;W[oj]C[[KataGo variation.\]]
;B[kf]
;W[fh]
;B[fi]
;W[lh]
;B[kg]
;W[lg]
;B[li]
;W[kh]
;B[qf]
;W[eg]
;B[ei]
))(;W[oq]C[[KataGo gives this move -6.2 pp for white.\]]
;B[np]TR[jp]C[There's also a ko at K4.]
(;W[if]C[So if white ignores...]
;B[nq]
;W[nr]
;B[jq]C[... black can wedge first.]
;W[jr]
;B[mr]C[Then play here.]
(;W[or]C[White needs to connect.]
;B[kr]
;W[jp]C[And then play like this.]
)(;W[lr]C[If white ataris...]
;B[or]TR[pp]TR[oq]TR[pq]TR[rq]TR[qr]TR[rs]C[... that just allows black to live.]
))(;W[bo]C[[KataGo variation.\]]
;B[jq]
;W[jr]
;B[nq]
;W[lf]
;B[dr]
;W[qg]
;B[pk]
;W[ok]
)))(;W[dr]
;B[bo]C[This is also sente, by the way.]
;W[bm]C[White would need to answer this, and black would be fine.]
))(;B[ih]C[Black can't really double-hane...

[KataGo gives this move -50 pp for black.\]]
;W[gi]C[... just 'cause...]
;B[hh]
;W[fi]C[... white's gonna get the initiative here.]
(;B[ik]
;W[ij]
;B[jk]
;W[kk]
;B[jj]
;W[ji]
;B[kj]
;W[ki]
;B[lj]
;W[li]C[And there's really nothing black can do.]
;B[kl]C[He can try playing the atari here...]
;W[km]C[... but white will play the double atari.]
;B[lk]C[Black takes.]
;W[jn]C[White takes.]
;B[mi]
;W[lh]C[And essentially, white covers.]
;B[mj]
;W[gm]
;B[fm]SQ[pd]SQ[oe]SQ[pe]SQ[qe]SQ[mf]SQ[nf]SQ[og]SQ[lh]SQ[ii]SQ[ji]SQ[ki]SQ[li]TR[gj]SQ[hj]SQ[ij]TR[gk]SQ[hk]TR[gl]TR[hl]TR[dn]TR[en]TR[fn]TR[go]TR[ho]TR[io]TR[jo]TR[no]TR[gp]TR[ip]TR[kp]TR[lp]TR[mp]C[Now it's the F7 group versus the M12 group.]
;W[gn]
;B[fo]C[Like this.]
(;W[fj]C[White plays here.]
)(;W[ek]C[Or here.]
;B[fl]C[Black is forced to connect.]
(;W[kg]C[And then white comes out.]
)(;W[mh]C[Or even plays here first.]
;B[ni]
;W[jg]TR[gj]TR[gk]TR[fl]TR[gl]TR[hl]TR[fm]TR[dn]TR[en]TR[fn]TR[fo]TR[go]TR[ho]TR[io]TR[jo]TR[no]TR[gp]TR[ip]TR[kp]TR[lp]TR[mp]C[And then jumps. Like this, the F7 group should die.]
)))(;B[ej]C[[KataGo variation.\]]
;W[ei]
;B[dj]
;W[di]
;B[ci]
;W[bk]
;B[bj]
;W[ck]
;B[fj]
)))(;W[dr]C[I guess with this, it doesn't actually matter.]
;B[bo]
;W[cq]
;B[dq]C[So that's fine for black.]
))(;B[hj]C[Black could use another move in the center to protect his stones.

[KataGo gives this move -2.8 pp for black.\]]
;W[bd]C[[KataGo variation.\]]
;B[be]
;W[bb]
;B[dg]
;W[ci]
;B[eg]
;W[gi]
;B[ei]
;W[fj]
;B[gg]
)(;B[gk]C[[KataGo gives this move -14 pp for black.\]]
;W[im]C[[KataGo variation.\]]
;B[fm]
;W[er]
;B[el]
;W[bm]
;B[ek]
)(;B[fl]C[[KataGo gives this move -14 pp for black and only gives it 1 visit out of 124,354 playouts.\]]
))(;B[gl]C[This should still work.

[KataGo gives this move -5.4 pp for black.\]]
(;W[fk]
;B[gk]
;W[gm]C[I guess in this case, white can play here now.]
;B[fm]
(;W[gn]TR[jm]C[With K7, this seems to work for black.]
;B[hm]
;W[hn]
;B[im]
)(;W[hm]C[I don't see how white's gonna be able to play this way.]
))(;W[er]C[[KataGo variation.\]]
;B[bo]
;W[bm]
;B[gj]
;W[ij]
;B[im]
;W[hl]
;B[fm]
;W[hm]
;B[ej]
;W[dj]
;B[ei]
;W[dh]
;B[di]
;W[ci]
)))(;B[gl]C[Why not just do this immediately? Maybe I'm missing something here. It just seems like it's working.

[KataGo gives this move -5 pp for black.\]]
(;W[gk]
;B[fl]
;W[fk]
;B[el]C[This is pretty scary for white, 'cause if black just lives, it's pretty bad.]
(;W[ek]
;B[dl]
;W[bm]C[Something like this.]
;B[bk]TR[cl]TR[bm]TR[dm]TR[em]TR[bn]TR[cn]C[Black just plays here and white's dead.]
)(;W[dl]C[So white needs to connect.]
;B[ek]
;W[ej]
;B[hk]C[But then black can play here.]
;W[hl]
;B[dj]C[And then cut.]
;W[fj]C[If white connects...]
;B[bl]
;W[bm]
;B[fm]
;W[cm]
;B[bj]TR[dk]TR[cl]TR[dl]TR[bm]TR[cm]TR[dm]TR[em]TR[bn]TR[cn]C[... this dies.]
))(;W[fk]
;B[gk]
;W[gj]
;B[hj]
;W[gi]SQ[hj]SQ[ij]SQ[jj]SQ[kj]SQ[gk]SQ[hk]SQ[jk]SQ[kk]TR[gl]C[I'm not sure why black wouldn't start at G8, except for the fact that white would be looking to basically force black to pretty much run into her strength.]
)(;W[gm]
;B[fm]
;W[gn]C[Like playing this.]
)(;W[gn]C[Or... nah, this wouldn't work.]
;B[hn]
;W[gm]
;B[fm]
;W[hm]
;B[fo]
(;W[fl]C[Because white can't cut.]
;B[el]
;W[fk]
;B[dl]
)(;W[ek]
;B[fk]
;W[fj]
;B[gj]
))(;W[er]C[[KataGo variation.\]]
;B[bo]
;W[bm]
;B[hk]
;W[jj]
;B[ii]
;W[ci]
;B[bb]
;W[og]
;B[pi]
;W[lf]
;B[ni]
;W[ji]
;B[ih]
;W[jh]
;B[ig]
;W[ke]
;B[mj]
;W[mk]
;B[ik]
;W[jk]
)))(;W[on]C[[KataGo gives this move -2 pp for white.\]]
(;B[en]C[And then come back?]
)(;B[fo]
;W[eq]
;B[en]C[Maybe something like this...]
;W[dn]
;B[fl]C[... and then jump.]
)(;B[pn]C[[KataGo variation.\]]
;W[om]
;B[po]
;W[oo]
;B[qp]
;W[pl]
;B[ql]
;W[qo]
;B[qm]
;W[qq]
;B[rp]
;W[il]
;B[op]
;W[pq]
;B[gl]
;W[rq]
;B[lh]
;W[dk]
;B[kp]
;W[ij]
;B[nq]
;W[nr]
;B[jm]
;W[jl]
;B[im]
;W[kn]
;B[jn]
;W[hl]
;B[hm]
))(;W[il]C[We can look at certain shapes. White's not going to play something like this, just because...

[KataGo gives this move -6.6 pp for white.\]]
(;B[on]C[... when black connects up here...]
;W[kp]
;B[ko]
;W[lo]C[... white's gonna try to connect up...]
;B[en]
;W[dn]
;B[gl]C[... but again, black is gonna be able to try to jump out and run.]
)(;B[pn]C[[KataGo variation.\]]
;W[po]
;B[nn]
;W[nm]
;B[nl]
;W[np]
;B[op]
;W[nq]
;B[mo]
;W[mh]
;B[oo]
;W[pq]
;B[qo]
;W[ro]
;B[qm]
;W[rn]
;B[mi]
;W[ni]
;B[lh]
;W[mg]
;B[oh]
;W[kg]
)))(;B[eq]C[Even now...]
;W[fq]
;B[ep]
;W[fo]
;B[eo]
;W[fn]TR[cl]TR[dm]TR[bn]TR[cn]TR[do]TR[dp]
;B[en]
;W[em]TR[bn]TR[cn]TR[do]SQ[go]SQ[ho]SQ[io]SQ[jo]TR[dp]SQ[gp]SQ[ip]SQ[lp]SQ[mp]C[... I think white would be happy to give up a few stones to attack the K5 stones.]
))(;W[fo]C[White could play here...

[KataGo gives this move -11 pp for white.\]]
(;B[iq]SQ[fq]TR[kq]TR[lq]TR[mq]C[... but black can block, and the M3 stones are in a bit of trouble. That also means the F3 cut opens up.]
)(;B[il]C[[KataGo variation.\]]
;W[mh]
;B[mi]
))(;W[eq]C[So if white plays here...

[KataGo gives this move -15 pp for white.\]]
(;B[iq]C[... and black blocks...]
;W[nq]TR[kq]TR[lq]TR[mq]C[... white can come back and fix these stones.]
;B[en]
;W[dn]
;B[gm]TR[en]TR[go]TR[ho]TR[io]TR[jo]TR[gp]TR[ip]TR[lp]TR[mp]TR[iq]C[But black can also have an easy way of running out with these stones.]
)(;B[er]C[[KataGo variation.\]]
;W[mh]
;B[en]
;W[dn]
;B[fr]
;W[dk]
;B[cj]
;W[iq]
;B[gl]
)))(;B[go]C[Basically, if black connects, white doesn't really need to answer.

[KataGo gives this move -2.5 pp for black.\]]
(;W[fo]C[She can play here.]
;B[fq]C[And this cut doesn't work.]
;W[eq]
;B[fr]
)(;W[nh]C[Let's say white plays something like this.]
;B[eq]C[Black can actually play here first...]
;W[fq]
;B[ep]
;W[fo]
;B[eo]
;W[en]
;B[fn]
;W[gn]
;B[fm]TR[cl]TR[dm]TR[bn]TR[cn]TR[en]TR[do]TR[dp]C[... and basically fight the left side...]
;W[gm]
;B[fl]
;W[gl]
;B[fk]MA[ph]MA[qk]CR[cl]SQ[jl]SQ[kl]SQ[ll]SQ[ml]CR[dm]SQ[jm]SQ[km]SQ[lm]SQ[mm]CR[bn]CR[cn]CR[en]SQ[jn]SQ[kn]SQ[ln]SQ[mn]CR[do]TR[go]TR[ho]TR[io]TR[jo]CR[dp]TR[gp]TR[ip]TR[lp]TR[mp]C[... but white would be able to attack the K5 stones. The issue is, black can add a move on the left, and it would basically kill the D7 group; whereas white adding stones in the center would not kill the K5 group completely — there'd still be some aji; and the left side would be a lot bigger compared to black being able to reduce the right side.]
)(;W[iq]C[[KataGo variation.\]]
;B[nh]
;W[pj]
;B[pm]
;W[qm]
;B[qj]
;W[mh]
;B[pl]
;W[kk]
;B[np]
;W[ln]
;B[kp]
)))(;W[go]C[Who's going to ignore first?

[KataGo gives this move -12 pp for white, and only gives it 1 visit out of 24,521 playouts.\]]
;B[mq]
(;W[fp]SQ[gp]TR[lp]TR[mq]C[But if black gets on the bottom side, it's gonna be a lot bigger than giving up his one stone.]
)(;W[kq]
(;B[pr]C[Potentially with something like this.]
)(;B[np]C[Or just here.]
;W[fp]SQ[cl]SQ[dm]SQ[bn]SQ[cn]MA[co]SQ[do]TR[go]MA[cp]SQ[dp]TR[hp]MA[bq]MA[dq]TR[gq]MA[cr]C[Black probably doesn't need to answer this; because white's ponnuki would be way too close to D7, and the corner is already alive. So if white spends a move doing something like this...]
;B[pr]C[... I think black is happy to ruin the corner.]
))))(;B[dl]C[[KataGo gives this move -2.6 pp for black.\]]
;W[bm]
(;B[el]TR[ck]TR[dl]TR[gp]C[I think black's just playing to build influence on the outside.]
)(;B[bk]C[[KataGo variation.\]]
;W[el]
;B[dk]
;W[fo]
;B[fp]
;W[qj]
;B[nh]
;W[og]
;B[pj]
;W[pk]
;B[qk]
;W[pi]
;B[oj]
))(;B[jq]C[Maybe just sticking with something like this would have been better?

[KataGo gives this move -4.6 pp for black.\]]
;W[qj]C[[KataGo variation.\]]
;B[nq]
;W[pq]
;B[dk]
;W[kp]
;B[jp]
;W[ko]
;B[en]
;W[em]
;B[fn]
;W[fm]
;B[gm]
)(;B[nh]TR[pd]TR[oe]TR[pe]TR[qe]TR[mf]TR[nf]C[Or even playing something like this to threaten to capture the whole P15 thing.

[KataGo gives this move -3 pp for black.\]]
;W[pj]C[[KataGo variation.\]]
;B[dk]
;W[fo]
;B[fp]
;W[og]
;B[pi]
;W[qj]
;B[ni]
;W[mj]
;B[kg]
;W[rh]
;B[qg]
)(;B[kp]C[Or probably here would be better? Stuff like this would be interesting to see, how the game would play out.

[KataGo gives this move -9.5 pp for black.\]]
;W[kq]
;B[jp]
;W[jq]
;B[dk]
))(;W[qg]TR[ck]C[Perhaps if C9 wasn't evil, then following up with R13 now would result in a lot of ways to play.

[KataGo gives this move -24 pp for white.\]]
(;B[pg]
(;W[pf]
;B[qh]
;W[rg]
;B[mh]
;W[lf]C[White probably just pushes.]
;B[kh]C[And the more black runs...]
;W[kf]TR[ia]TR[ja]TR[ka]TR[la]TR[jb]TR[kb]TR[lb]TR[jc]TR[kc]TR[lc]TR[mc]TR[kd]TR[ld]TR[md]TR[me]SQ[pg]SQ[kh]SQ[mh]SQ[ph]SQ[qh]C[... the easier it is for white to destroy the points on the top side, and the N12 stones are kinda just floating. White is basically a move ahead.]
)(;W[of]C[[KataGo variation.\]]
;B[qf]
;W[qj]
;B[mi]
;W[lf]
))(;B[dl]C[But realistically, white can't really tenuki this position without being attacked here.]
;W[em]
)))(;B[pj]C[If black jumps out immediately, he's kind of in trouble.

[KataGo gives this move -1.6 pp for black.\]]
(;W[qg]C[Maybe the idea is, white's going to play here.]
;B[of]C[And if black tries this...]
(;W[og]
;B[pf]
;W[pg]
;B[qf]TR[pd]TR[oe]TR[pe]TR[qe]SQ[ph]SQ[pj]C[... white actually has to give up the four stones, like I said; but she's actually pretty happy with this, because now black's Q12 stones are looking kinda funky.]
)(;W[pg]C[White could do something like this...]
;B[og]TR[pd]TR[oe]TR[pe]TR[qe]TR[pg]TR[qg]C[... and then white would have to save the Q15 group, but it would end in disaster.]
;W[oh]
;B[ng]
;W[pi]
;B[qh]
;W[qi]
;B[rh]
;W[nh]
;B[qf]C[Because of this.]
;W[rg]
;B[ri]C[Black has this turn.]
;W[rj]
;B[qj]
;W[oi]
;B[rk]
;W[pf]C[The connection does work...]
;B[mg]
;W[rf]TR[pd]TR[oe]TR[pe]TR[qe]TR[pf]TR[pg]TR[qg]TR[rg]C[... but white's gonna die, so this is kind of what black wants to do.]
))(;W[oi]C[[KataGo variation.\]]
;B[pi]
;W[og]
;B[ck]
;W[qg]
;B[nk]
;W[mj]
;B[dl]
;W[em]
;B[fk]
;W[gm]
;B[pl]
;W[mk]
;B[qm]
;W[pn]
;B[nl]
;W[iq]
;B[hq]
;W[ip]
;B[ml]
;W[ll]
;B[lm]
;W[km]
;B[mn]
;W[ln]
;B[mm]
))(;B[qk]TR[dm]TR[bn]TR[cn]TR[do]TR[dp]C[Black could choose not to attack the D5 group directly and play R9 now.

[KataGo gives this move -1.5 pp for black.\]]
(;W[qg]C[White cannot play this way.]
;B[pg]
;W[pf]
;B[qh]C[The idea here is, black's going to play these forcing moves...]
;W[rg]
;B[mh]C[... and then come out, probably with something like this.]
;W[nh]
;B[ni]C[Black plays here...]
;W[mi]
;B[ng]C[... and essentially, depending on what white does...]
(;W[oi]
(;B[mg]C[... black has a connection.]
)(;B[og]C[But black also has this.]
;W[mg]
;B[of]
;W[lh]
;B[pl]SQ[pd]SQ[oe]SQ[pe]SQ[qe]SQ[pf]SQ[qg]SQ[rg]TR[mh]C[Black can give up an outside stone to basically break the top right for a few extra stones.]
))(;W[mg]C[If white plays here...]
;B[oh]
;W[lh]
(;B[of]C[... this is just a ko.]
)(;B[nh]C[So potentially black just connects.]
;W[of]C[White connects.]
;B[li]C[And then white's in trouble.]
;W[mj]
;B[lg]
;W[kh]
;B[lf]TR[pd]TR[oe]TR[pe]TR[qe]TR[mf]TR[nf]TR[of]TR[pf]TR[mg]TR[qg]TR[rg]C[The whole thing dies.]
)))(;W[pj]C[[KataGo variation.\]]
;B[qj]
;W[pg]
;B[pi]
;W[lf]
;B[qg]
;W[iq]
;B[kp]
;W[ke]
;B[kq]
;W[kr]
;B[lp]
;W[lr]
;B[ip]
;W[hq]
;B[hp]
;W[gq]
;B[kd]
;W[je]
;B[jb]
;W[ib]
;B[kg]
;W[kf]
;B[db]
;W[eb]
;B[bb]
;W[fp]
;B[il]
;W[da]
;B[np]
;W[oq]
)))(;W[pj]SQ[qn]TR[gp]SQ[pp]SQ[lq]C[G4 also reduces any influence that white could probably get from something like Q10, which would make a double wing — pretty big.

[KataGo gives this move -4.5 pp for white.\]]
;B[ni]C[[KataGo variation.\]]
;W[lf]
;B[id]
;W[hd]
;B[jc]
;W[jb]
;B[jd]
;W[he]
;B[db]
;W[eb]
;B[ib]
;W[hc]
;B[kb]
;W[nk]
))(;B[of]TR[pd]TR[oe]TR[pe]TR[qe]C[Even here, the Q15 stones aren't fully sacrificed.]
(;W[og]
(;B[pf]
;W[pg]
;B[qf]C[But if black just takes the stones like this...]
;W[qg]
;B[rg]
;W[qh]C[... it's kind of bad news for black.]
)(;B[pg]C[If black plays here...]
;W[pf]
;B[qf]C[... this could happen.]
;W[of]TR[og]C[White will only ever play P13 if something like this is sente.]
;B[qh]
))(;W[qj]TR[pd]TR[oe]TR[pe]TR[qe]C[Q15 is only eight points directly, and white can play moves like this that are bigger than eight points.]
)))(;B[pg]C[Basically, if it goes likes this...

[KataGo gives this move -1.1 pp for black.\]]
(;W[og]
;B[qf]
;W[ph]TR[pd]TR[oe]TR[pe]TR[qe]C[... white's probably going to give up the Q15 stones.]
(;B[of]
;W[qg]
;B[pf]
;W[oh]C[Something like this.]
;B[qh]
;W[qi]
;B[rg]
;W[pj]TR[mf]TR[nf]TR[og]TR[oh]TR[ph]TR[qi]TR[dm]TR[bn]TR[cn]TR[qn]TR[do]TR[dp]TR[pp]C[And play here; build this wall towards the center.]
)(;B[qh]
;W[pi]
;B[pj]C[However, I think with something like this, it's going to be good for black.]
))(;W[qf]
;B[qg]
;W[rf]C[I think the idea is, white plays here...]
;B[rg]
;W[og]C[... and then this.]
;B[sf]
;W[pi]
)(;W[qi]TR[pd]TR[oe]TR[pe]TR[qe]C[I think what white should be doing is probably just sacrifice the Q15 stones altogether.]
;B[qf]
)(;W[lq]C[[KataGo variation.\]]
;B[pm]
;W[ph]
;B[oh]
;W[oi]
;B[og]
;W[ni]
;B[pi]
;W[pk]
;B[qh]
;W[qm]
;B[ep]
;W[gp]
;B[po]
;W[oo]
;B[pq]
;W[qq]
;B[op]
;W[qp]
;B[no]
;W[on]
;B[nq]
;W[lo]
;B[nn]
;W[pn]
;B[eo]
;W[dn]
))(;B[jp]C[[KataGo gives this move -5.3 pp for black.\]]
;W[qg]C[Even if white plays here...]
(;B[pg]C[... black has this tesuji attachment.]
)(;B[nq]C[[KataGo variation.\]]
;W[qc]
;B[qb]
))(;B[kq]C[Black could probably even go as far as this.

[KataGo gives this move -12 pp for black.\]]
;W[qg]C[[KataGo variation.\]]
;B[pi]
;W[qc]
;B[qb]
)(;B[nq]C[Or even just here.

[KataGo gives this move -1 pp for black.\]]
;W[oq]C[[KataGo variation.\]]
;B[np]
;W[pg]
;B[jp]
;W[qc]
;B[qb]
;W[fp]
;B[nr]
;W[or]
;B[bb]
;W[mo]
;B[lp]
;W[rf]
;B[db]
;W[eb]
;B[ca]
;W[dg]
;B[qk]
;W[qi]
;B[ri]
;W[rh]
;B[pi]
)(;B[dl]C[[KataGo gives this move -6.1 pp for black.\]]
(;W[cl]
;B[ck]
;W[bm]
;B[el]C[Black could also do stuff like this to jump into the center. He doesn't necessarily need to reduce the right side.]
)(;W[el]C[[KataGo variation.\]]
;B[dk]
;W[fm]
;B[pg]
;W[ph]
;B[qh]
;W[qi]
;B[pi]
;W[oh]
;B[qj]
;W[ri]
;B[qg]
;W[rj]
)))(;W[qg]C[With something like this...

[KataGo gives this move -1.6 pp for white.\]]
(;B[pg]C[... black can actually play a tesuji here.]
)(;B[qh]C[Or even attach, which is important.]
)(;B[qq]C[[KataGo variation.\]]
;W[qp]
;B[pq]
;W[oq]
;B[or]
;W[nr]
;B[nq]
;W[op]
;B[mr]
;W[pr]
;B[ns]
;W[qr]
;B[pi]
;W[qi]
;B[qj]
;W[qc]
;B[qb]
;W[ri]
;B[pg]
;W[pj]
;B[oi]
;W[og]
;B[ph]
;W[qf]
;B[pk]
;W[rj]
;B[oj]
;W[ql]
;B[pl]
;W[qm]
)))(;W[pj]C[If white decided to do this...

[KataGo gives this move -4.4 pp for white.\]]
;B[re]
;W[qg]TR[re]C[... first of all, black can turn at S15.]
(;B[bb]C[But black also has this big atari.]
(;W[ab]C[And if white goes for the atari...]
;B[ba]
;W[ca]
;B[db]
;W[aa]
;B[eb]C[... later, there's gonna be this.]
)(;W[ba]C[White needs to basically fix.]
;B[ab]
;W[eb]
))(;B[gc]C[So that means, if black gets a move here, it's a big deal. He pretty much wants to start low, just 'cause...]
;W[ge]C[... white playing a high stone...]
;B[id]C[... gives a high chance of black connecting the group solidly.]
)(;B[id]C[Probably black will play here. I don't exactly know the position to attack here.]
)(;B[gd]C[If black starts high...]
;W[gb]
(;B[ic]C[... that just means his top side's gonna be destroyed. There's really no point.]
)(;B[eb]C[In some sense, black can play like this...]
;W[fc]
(;B[db]
;W[bb]TR[eb]C[... but the E18 stone should not survive.]
)(;B[bb]
;W[db]
;B[ab]C[Black's not really attacking white effectively.]
)))(;B[eb]C[Black could start with the peep.]
(;W[db]
;B[gc]C[And then play here; this would be possible.]
;W[ge]
;B[id]TR[eb]TR[gc]SQ[le]C[And black kind of gets this three-stone wall here, along with a large knight, in order to build the top side. The right side's very invadable; so there's that.]
)(;W[qc]C[[KataGo variation.\]]
;B[qb]
;W[db]
;B[hc]
;W[nq]
;B[fc]
;W[ge]
;B[ie]
;W[fp]
))))(;B[mf]C[Fun fact, black can actually play this move. And the idea here is...

[KataGo gives this move -11 pp for black.\]]
;W[me]
;B[nd]
(;W[ng]
(;B[lf]C[... black gets the top side.]
;W[qc]
;B[re]
;W[qg]
;B[qb]C[So even if white plays like this, black is gonna be pretty thick, which is really nice. I'm pretty sure this is gonna be an even position.]
)(;B[le]C[Sometimes, just taking directly is also okay.]
;W[mg]
;B[lf]C[This just makes black a lot thicker.]
;W[qc]C[And same pattern here.]
;B[re]
;W[qg]
;B[qb]
;W[pm]TR[cb]TR[bc]TR[dc]TR[dd]SQ[pd]TR[de]SQ[oe]SQ[pe]SQ[qe]TR[cf]TR[df]SQ[nf]SQ[mg]SQ[ng]SQ[qg]SQ[pp]C[White does get the first move on the right side. So white has the D17 wall that's facing the top side, but she's gonna have another wall on the right side, which is gonna be good.]
))(;W[re]C[[KataGo variation.\]]
;B[ng]
;W[of]
;B[mg]
;W[pi]
;B[le]
;W[ic]
;B[qk]
;W[rj]
;B[nq]
;W[oq]
;B[np]
;W[qn]
;B[fp]
)))(;B[pe]C[If black does it this way...

[KataGo gives this move -7.3 pp for black.\]]
;W[qc]
(;B[pc]
;W[od]
(;B[oc]
;W[qe]C[... we run into this joseki, but I don't think black is going to choose this particular joseki.]
;B[rd]
;W[pf]
;B[oe]
;W[nd]
;B[qf]
;W[mc]C[White will play the hane once.]
;B[mb]
(;W[lb]C[And white wants to double-hane, but the issue with the double hane...]
;B[md]
;W[ne]
;B[lc]
;W[re]
;B[rf]
;W[of]
;B[se]
;W[pe]
;B[qh]C[... is that we get into this masterpiece.]
;W[rc]
;B[sd]
;W[pi]
;B[qi]
(;W[qg]
;B[rg]
;W[sf]
;B[sg]
;W[sc]
;B[sf]
;W[pg]C[And then I think white plays here.]
;B[ri]
;W[pj]C[And it continues like this.]
)(;W[pj]C[I think it's also possible that white continues here. But the thing about the corner here is, white can live in a ko.]
;B[qj]
;W[qg]
;B[rg]
;W[sf]
;B[sg]
;W[sc]C[It may not be very optimal.]
;B[sf]
;W[pg]
;B[ri]C[I think sometimes black can play here.]
;W[qk]
;B[rk]
;W[ql]
(;B[rl]
;W[qm]C[And then we are just forced to crawl.]
)(;B[ph]C[I think sometimes this is okay.]
;W[oh]
(;B[oi]SQ[mb]SQ[lc]SQ[nc]SQ[md]TR[nd]TR[od]TR[pd]TR[ne]TR[pe]TR[qe]TR[re]TR[of]TR[pf]TR[pg]TR[qg]TR[oh]C[Black goes for the cut, especially when the P14 group is weak. But white really doesn't wanna play this joseki specifically because of the ponnuki at N17, even if black is low.]
)(;B[qb]C[If black comes back, the corner is all his.]
)(;B[rl]C[But chances are, black is gonna leave it and let it be a ko.]
;W[pb]
;B[ob]
;W[pa]
;B[ra]
;W[rb]
;B[sb]
))))(;W[ne]C[So instead, white will turn.]
(;B[of]C[If black plays this one...]
(;W[nf]C[... white can push one more.]
;B[pg]
;W[lb]C[And then play here.]
;B[lc]
;W[md]
;B[nb]
;W[kc]SQ[bl]TR[cm]C[And this would be a ladder.]
)(;W[lb]C[It's also possible just this.]
;B[nf]C[And I've seen examples where black can just turn...]
;W[ld]
;B[qb]C[... and needs to come back and fix.]
))(;B[re]C[If black just takes...]
;W[lb]
;B[lc]
;W[md]
;B[nb]
;W[kc]C[... it just reverts back to normal, although in this particular position...]
(;B[eh]C[... just a simple stone here...]
;W[jf]C[... would force white to fix.]
;B[cl]
(;W[qb]
;B[pb]
;W[oa]
;B[na]
;W[pa]
;B[rb]
;W[la]C[White is really going to be aiming at this. The descent here would stop a lot of the aji that happens on the top side, which is pretty important if black wants to invade there.]
)(;W[dl]
;B[ck]C[But black getting several moves here is already big enough.]
;W[dk]
;B[dj]
;W[ej]
;B[di]
;W[fk]SQ[bf]SQ[cg]SQ[bh]SQ[eh]SQ[di]SQ[dj]TR[ej]SQ[ck]TR[dk]SQ[cl]TR[dl]SQ[cm]TR[dm]TR[bn]TR[cn]SQ[co]TR[do]SQ[cp]TR[dp]SQ[bq]SQ[dq]SQ[cr]C[White's weak here; black got all the territory; and black is already into the top side.]
(;B[ke]C[There are also things like this.]
)(;B[la]C[Black could maybe start with something like this.]
;W[kb]C[And white connects; all possible.]
)))(;B[ck]C[Even stuff like this.]
)(;B[dk]C[This would help.]
))))(;B[rc]C[[KataGo variation.\]]
;W[qb]
;B[oc]
;W[rd]
;B[qe]
;W[sc]
;B[re]
;W[rb]
;B[mf]
;W[ld]
;B[me]
;W[id]
;B[qp]
;W[qq]
;B[qo]
;W[pq]
;B[qm]
;W[mp]
;B[pk]
))(;B[od]TR[nb]C[White will need to fix at O18.]
;W[pc]
;B[qe]
;W[nb]
;B[mb]
;W[ob]
;B[mc]C[But if black goes with something like this, I think white lives in a ko.]
;W[eh]
;B[rc]
;W[rb]
;B[sb]C[I think like this.]
;W[rd]
;B[sd]
;W[qa]C[White's not fully alive here.]
;B[pb]C[With something like this.]
;W[sc]C[I think white would be fine with this.]
)))(;W[bd]C[Essentially, if white wants to do this...]
;B[be]
;W[ab]TR[be]C[... she would have to fix after black plays B15.]
))(;B[bd]C[[KataGo gives this move -0.9 pp for black.\]]
;W[ad]
;B[be]C[Black actually forces white to basically gave up the influence that he gave her and kind of go for the corner instead.]
(;W[bb]C[If white connects, black can actually just tenuki this position.]
;B[qn]C[And play here.]
)(;W[qn]C[[KataGo variation.\]]
;B[nq]
;W[oq]
;B[np]
;W[fp]
;B[jp]
;W[jc]
;B[lc]
;W[je]
;B[qi]
;W[qk]
;B[oi]
;W[lr]
;B[lq]
;W[kq]
;B[kp]
;W[mq]
;B[nr]
;W[lp]
;B[lo]
;W[iq]
;B[mp]
;W[bb]
;B[ck]
;W[ci]
;B[bi]
;W[cj]
;B[bj]
;W[dk]
)))(;B[bb]C[There's also the fact that if we play like this...

[KataGo gives this move -3.4 pp for black.\]]
;W[be]C[... white might try doing stuff here.]
;B[bd]
;W[bg]
(;B[df]
;W[cg]
(;B[db]
;W[eb]
;B[ef]
;W[af]
;B[ca]
;W[gd]C[And this would turn into a fight (in a joseki sense).]
)(;B[ef]C[It's also possible black just plays here directly.]
;W[eb]
;B[ca]C[And then we have this.]
;W[eh]C[And I think white would follow up here.]
;B[fd]
;W[gc]C[And play something like this.]
;B[he]C[Some fun stuff here.]
))(;B[qq]C[[KataGo variation.\]]
;W[pq]
;B[qp]
;W[qn]
;B[qo]
;W[af]
;B[db]
;W[po]
;B[rn]
;W[qr]
;B[rr]
;W[ro]
)))(;W[cd]C[What's interesting is, white didn't block here.

[KataGo gives this move -0.3 pp for white.\]]
;B[dc]
(;W[ed]
;B[fb]C[I imagine this is what would have happened.]
)(;W[fc]
;B[ec]
;W[ed]
;B[fb]C[Maybe something like this.]
(;W[qn]C[And then tenuki.]
;B[gc]
;W[fd]
;B[bc]TR[dm]C[I guess in some sense, white doesn't really want this. D7 is a fourth-line stone, but there are some issues there.]
;W[he]C[Let's say white plays here.]
;B[dl]C[Black can actually play this one.]
;W[el]
;B[em]
;W[dn]
;B[dk]C[Black is happy to basically crawl here.]
;W[ek]
;B[dj]
;W[ej]
;B[di]TR[ei]C[Maybe pushing one more time is possible for white.]
)(;W[gc]C[[KataGo variation.\]]
;B[gb]
;W[hc]
;B[dh]
;W[nq]
;B[fg]
;W[fp]
;B[fe]
;W[fd]
;B[je]
;W[jc]
;B[kc]
;W[if]
;B[jd]
;W[ge]
;B[dk]
;W[od]
;B[oc]
;W[pd]
;B[pc]
;W[qe]
;B[rd]
;W[qi]
;B[mp]
;W[np]
))))(;B[dn]C[I imagine that this would revert to the joseki.

[KataGo gives this move -13 pp for black.\]]
;W[cr]
;B[bo]
(;W[ao]
;B[bp]
;W[br]C[We'll have this.]
;B[bm]
;W[en]C[Play the atari.]
;B[dm]C[Connect.]
;W[eq]TR[br]C[And come back here. But the thing here is, white got the B2 turn, and that's a bit problematic for black. White is preferred here according to AI, even if black has sente.]
)(;W[eq]TR[bo]C[I think if white just ignores B5...]
(;B[bm]
;W[en]
;B[dm]TR[br]C[... white still gets sente from this, but the B2 turn doesn't work.]
)(;B[dm]C[[KataGo variation.\]]
;W[cf]
;B[br]
;W[dr]
;B[qn]
;W[ql]
;B[hq]
;W[mq]
))))(;B[bn]C[Fun fact: black can actually start here as well...

[KataGo gives this move -15 pp for black.\]]
(;W[dn]
;B[bq]C[... and then play the atari...]
;W[cr]
;B[eq]C[... and extend.]
;W[bm]
;B[bo]
;W[cl]C[This would turn into a ladder.]
;B[dm]C[When black has the ladder, this is actually pretty good, because then he can extend.]
;W[bk]
;B[em]TR[cn]TR[dn]TR[do]TR[dp]C[And then when black extends here, the D6 stones are captured.]
)(;W[eq]C[[KataGo variation.\]]
;B[dn]
;W[dr]
;B[cf]
;W[df]
;B[dg]
;W[ef]
;B[cd]
;W[cc]
;B[ce]
;W[dc]
;B[qq]
;W[qp]
;B[pq]
;W[nq]
)))(;B[co]C[[KataGo gives this move -0.8 pp for black.\]]
;W[cn]
;B[cp]
;W[dn]
;B[fq]
(;W[dj]C[The thing that black really wants to avoid, though, is giving white a large area to play from. When one side has this really large moyo, someone messed up.]
;B[qn]
;W[ql]
;B[on]
;W[nq]C[Mostly because when we play like this, white's happy to give black this influence.]
)(;W[pd]C[[KataGo variation.\]]
;B[pc]
;W[qe]
;B[rd]
;W[pe]
;B[od]
;W[oe]
;B[ne]
;W[nf]
;B[re]
;W[me]
;B[nd]
;W[kf]
;B[qq]
;W[pq]
;B[qp]
;W[qn]
;B[qo]
;W[po]
;B[rn]
;W[cf]
;B[qm]
;W[pn]
;B[pr]
;W[or]
;B[qr]
;W[nq]
;B[dj]
;W[go]
;B[fj]
;W[hq]
;B[hk]
;W[fl]
;B[fo]
;W[fn]
;B[gp]
;W[hp]
;B[gn]
;W[ho]
;B[fm]
;W[ep]
;B[gr]
;W[gl]
;B[ii]
;W[fp]
;B[fc]
)))(;B[cf]C[Because of the way black has positioned his stones, white's just gonna ignore this move.

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

KataGo gives this move -2.9 percentage points winrate (pp) for black.\]]
(;W[od]
)(;W[co]C[[KataGo variation.\]]
;B[ep]
;W[oc]
;B[pe]
;W[cl]
;B[qq]
;W[pq]
;B[qp]
;W[qn]
;B[qo]
;W[po]
;B[rn]
;W[ce]
;B[df]
;W[fd]
;B[qm]
;W[pn]
;B[qr]
;W[hq]
;B[kp]
;W[ho]
;B[mq]
;W[fq]
;B[cp]
;W[do]
;B[bo]
;W[bn]
)))