(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Chinese]SZ[19]KM[7.50]
PW[AlphaGo]PB[AlphaGo]RE[W+Resign]
;B[pd]
;W[dp]
;B[pq]C[direction as expected]
;W[dc]
(;B[de]
(;W[ce]
;B[cf]
;W[cd]
(;B[cq]C[B trying not to make C14 heavy]
(;W[dq]C[surprising direction?]
;B[cp]
(;W[cn]C[forcing B to make W more solid]
;B[co]
;W[do]
;B[bn]
;W[df]C[biggest says alphago, make the B exchanges locally look bad



this move seems to be the reason for the direction of the D3 block, though I still find it hard to see why this is worth it.

If W is going to cut here, D3 block seems better as locally B has C13, but in this position the left is small so it isn't so powerful.

Locally B also has D12 sente tesuji if W comes to close at D11, or driving tesujis at E12]
;B[hp]C[attacking, B wants this to be forcing


it is a shape point to attack for sure, but also a little risky as B is split between the corner and H4 (given this used to be W's corner), so attacking might not be so easy, and as H4 is high it might not be so easy to make territory, and H4 may be counter-attacked

But as it remains a shape point, the reasoning it W can't counter-attack yet with C6 being weak, and if W spends moves to make C6 stronger, either H4 gets light and B will move to sacrifice it, or if W tries to make the wall bigger to prepare to attack H4, B will just defend it.

See variations for tewari, and W doesn't seem to have a good local move]
(;W[qo]C[tenuki seems natural, especially alphago places special emphasis on the 3-4 corner.

it is hard to tell when alphago prefers the high approach over low]
(;B[dn]C[also common in the alphago games, but less so.

probably it makes more sense for B to be aggressive when H4 is so close and W tenukied]
;W[cm]
(;B[bm]
(;W[op]C[wow !!!

tenuki


I suppose B is already on the second line at B7, so W is relatively light]
(;B[qp]C[wow! new move

it seems a bit contradictory, just as how alphago likes 4-4 against 3-3 and vice versa.

the thing is that alphago likes to play P4 when B kicks, so isn't this asking for trouble?

Presumably B can't find a better move.

This is the sort of move that I probably won't be able to figure out without months/years unless a pro gives an explanation]
(;W[cl]C[too huge for W to continue messing around at P4

possibly P4 for R4 helps W in the fight here, or possibly it gives away territory, but this sort of thing is too hard to tell without years more experience]
;B[en]C[looks like a severe attack on both W groups here, especially with the aji of C13 or D12 in sente]
;W[cr]
;B[br]
(;W[bq]C[brilliant tesuji


B is mostly alive anyway, so W doesn't mind making it stronger to get forcing moves for better shape - getting B1 may turn out very important]
(;B[aq]C[very precise and easy to miss, making B totally alive, but W gets good shape, as B has completely committed to capturing B3 now and B1 is absolute sente.

i.e. if B sacrifices B2 now, A3 is the worst position for a stone, e.g. worse than B4 where B still has ko for life.]
(;W[gp]C[brilliant shape locally

in fact the extra "reach" into the centre of the W C8 shows in many variations here too, as B has to be careful not to let E6 get captured.

B is attacking strongly with two extra stones locally, so W is flexible and satisfied with any simple settled variation - B needs to stop W settling easy to profit.

W in turn wants most of all to avoid a weak heavy group that is chased around the board for the whole game.]
;B[gq]C[the most aggressive and risky fighting move here - taking away the eyespace and shape directly, but E6 is cut off and in danger too]
;W[bs]
;B[ar]
(;W[go]C[this shape is so weird with G4, that this looks so strange.

But after some thought, nothing else seems like good shape]
;B[fp]C[W doesn't have many liberties, but still, this is violent!]
;W[fq]
;B[fr]
;W[eq]
;B[er]
;W[dr]C[if this is the variation B was anticipating, the atari at A3 to let W get the B1 sente makes even more sense now as B1 doesn't help W make an eye, and if B had ataried at B4 to leave a ko, that ko would be much too light for W, and heavy for B.]
;B[hq]
;W[fn]
;B[dl]
;W[eo]
;B[ck]
;W[in]C[why?]
;B[kp]
;W[pp]
;B[qq]
;W[ro]
;B[nr]
;W[pk]
;B[pn]
;W[po]
;B[lo]
;W[qc]
;B[pc]
;W[qd]
;B[qf]
;W[qe]
;B[pe]
;W[rf]
;B[qb]
;W[mp]
;B[lq]
;W[rb]
;B[rg]
;W[pf]
;B[qg]
;W[pb]
;B[re]
;W[qa]
;B[of]
;W[no]C[wow!!!!]
;B[jm]
;W[gl]
;B[hl]C[ladder breaker required?]
;W[hm]
;B[ho]
;W[hn]
;B[rd]
;W[rc]
;B[cg]
;W[ef]
;B[eh]
;W[mr]C[too powerful?]
;B[mq]
;W[or]
;B[oq]
;W[nq]
;B[np]
;W[bp]
;B[bo]
;W[nq]
;B[fo]
;W[gn]
;B[np]
;W[bk]
;B[cj]
;W[nq]
;B[ns]
;W[os]
;B[np]
;W[el]
;B[nq]
;W[bl]C[I suppose that despite the collapse on the left, the ko isn't so light for W as it seemd - the W group is quite weak after R7/R8]
;B[bj]
;W[am]
;B[ap]
(;W[nk]
;B[qj]C[necessary as B no longer has the ladder for Q14

this will probably become a joseki quickly as this is relatively easy to understand]
;W[qk]
;B[fc]
(;W[gd]
;B[gc]
;W[id]
;B[fd]
;W[rj]
;B[mg]
;W[di]
;B[an]
;W[dh]
;B[dg]
;W[eg]
;B[ei]
;W[ej]
;B[gh]
;W[gg]
;B[gf]
;W[fg]
;B[dj]
;W[ic]
;B[hd]
;W[he]
;B[ib]
;W[jb]
;B[hb]
;W[kc]
;B[hf]
;W[hc]
;B[ee]
;W[fh]
;B[db]
;W[fi]
;B[cb]
;W[ci]
;B[dm]
;W[em]
;B[dk]
;W[bi]
;B[ak]
;W[bc]
;B[bb]
;W[nh]
;B[pi]
;W[mn]
;B[nc]
;W[if]
;B[ge]
;W[hg]
;B[hd]
;W[ie]
;B[dd]
;W[ng]
;B[nf]
;W[be]
;B[cc]
;W[ad]
;B[ri]
;W[pj]
;B[qi]
;W[kn]
;B[lg]
;W[oc]C[what??]
(;B[mi]
;W[oi]
;B[md]
;W[lj]
;B[li]
;W[kj]
;B[ob]
;W[io]
;B[jh]
;W[nb]
;B[od]
;W[jq]
;B[jr]
;W[ii]
;B[ab]
;W[jp]
;B[kr]
;W[af]
;B[oa]
;W[pa]
;B[ln]
;W[lm]
;B[mm]
;W[mo]
;B[nj]
;W[mj]
;B[ji]
;W[ni]
;B[jj]
;W[jk]
;B[ko]
;W[jn]
;B[ik]
;W[jl]
;B[rn]
;W[rp]
;B[kl]
;W[km]
;B[sc]
;W[sb]
;B[rm]
;W[qm]
;B[qn]
;W[on]
;B[om]
;W[nm]
;B[rk]
;W[rl]
;B[sj]
;W[sl]
;B[kk]
;W[im]
;B[ig]
;W[mb]
;B[mk]
;W[oj]
;B[ml]
;W[nl]
;B[jd]
;W[le]
;B[ja]
;W[jg])
(;B[ob]C[what is happening here?]
;W[md]
;B[nd]
;W[mf]C[wow what an idea]))
(;W[pg]C[now this is a net]
;B[oh]
;W[ph]
;B[pi]
;W[qh]
;B[rh]
;W[sf]C[W can capture the two stones in gote but that is all]
;B[sg]C[not possible]
;W[ri]
;B[se]
;W[qi]C[B dies totally]))
(;W[an]
;B[ak]C[only move]
;W[al]
;B[dm]))
(;W[fp]C[though I don't know what B will play here]
;B[fq]
;W[ho]
;B[ip]
;W[fm]
;B[fn]
;W[gn]
(;B[ep]C[W has an issue here])
(;B[dl]C[here first required though]))
(;W[fq]
(;B[fp]C[B can already revert to the game])
(;B[go]C[but this atari looks very natural]
;W[fp]
;B[ho]C[I'm nervous alphago would criticise B for being inefficient, though my feeling is that B is happy here.

W's shape seems worse]
;W[hq]
;B[iq]
;W[gr]
;B[hr]))
(;W[fn]C[the only other move that I can see

perhaps it is also a possibility normally for shape, but W doesn't seem to have enough liberties to fight strongly]
(;B[eo]C[B can even put W in serious trouble like this]
;W[fp]
;B[ep]
;W[eq]
;B[fq]
;W[fr]C[maybe this actually works for W though so I got this wrong]
;B[gr]
;W[em])
(;B[el]C[so maybe W is worried about this

W doesn't have a great follow up locally?]
(;W[fq])
(;W[eo]C[this seems alright]
(;B[dl]
;W[cj]C[complicated])
(;B[fm]C[maybe crude is best? this fight is difficult for me to work out])))
(;B[fm]C[or this?]
;W[gn]
;B[el]
;W[dj]
;B[eo])))
(;W[fo]
;B[el]C[W's shape is still weak and no good follow up with F5 to make sabaki

F5 only helps W get out and split B, but W is the one being attacked, so better to make life quickly if possible, so the standard sabaki attachment works well.])
(;W[bs]
;B[ar]
;W[er]C[locally, B1 helps W's shape massively]))
(;B[dr]
;W[bo]
;B[cs]
;W[bp]
;B[cr]
;W[bl]
;B[fo]C[W doesn't need to worry if B fights back - the 3 W stones are totally light if the corner turns from B territory to W.

The left side is uninteresting for both as W is so solid now (i.e. alive) and with B E6 helps limit the development]
;W[rp]
;B[rq]
;W[pp]
;B[qq]
;W[oq]C[huge])
(;B[bp]
;W[ar]C[later there is a ko and B is not even very alive]
(;B[aq]
;W[bs])
(;B[bs]
;W[ap]
;B[bo]
;W[cs])))
(;W[er]C[risky in being too slow, but standard shape ]
(;B[cs]C[even taking this atari gives W much worse shape than the game.


Even though this is the sort of shape I automatically think of when I see this fight, clearly I need to have higher expectations for W locally.])
(;B[gq]C[risky for W too]
;W[bs]
(;B[ar]C[locally B is alive unconditionally, but B8 is sente])
(;B[bl]
;W[ck]
;B[ar])))
(;W[dr]C[no eyespace and not sente]
;B[gq]))
(;W[rp]C[locally natural]
;B[rq]
;W[pp]
;B[qq]
;W[oq]C[big]
;B[ro]
;W[rn]
;B[sp]
;W[qn]C[gote]))
(;B[nq]C[alphago showed us this move in the pairgo])
(;B[oq]
;W[np]
;B[mq]C[I don't know what B's follow up is]
;W[cl]C[presumably still here])
(;B[cl]C[locally natural]
(;W[oq]C[is this really too big to bear?]
;B[gq]C[probably it is very difficult to kill W cleanly here]
;W[cr]
;B[br]
;W[fo])
(;W[gp]C[perhaps I'm missing the point. Is alphago going to play this anyway?]
;B[ho]
;W[go])))
(;W[cl]C[this probably won't end well to fight directly - B has two extra stones locally])
(;W[en]C[sometimes a tesuji, but W's shape seems too bad here, with too few liberties, unless the plan is to sacrifice one side or the other]
;B[dm]
;W[cl]
;B[em]
;W[fn]C[soon, B F4 is a powerful shape point, H4 is perfectly placed]
;B[dk]C[and W is almost dead locally too ...]))
(;B[en]C[not here?


this also looks difficult for W]
(;W[bm]C[I don't think this is reasonable]
;B[dr]
;W[er]
;B[cr]
;W[fp]
;B[gn]
;W[hq]C[painful life for W


actually this does seem an option as B's stones at G6 seem weird when W can capture B6 in semi-sente*, but this is exactly the sort of reason W doesn't want to fight locally. Starting a fight now is unreasonable as B has more stones, so W gets heavy and has to take gote living small. Better to take a bigger move eleswhere first and come back later.


*normally sente, but B has the F2 clamp tesuji to fight and try to live in the corner in sente]
;B[iq]
;W[hr]
;B[ip]
;W[op]C[in fact, even ]
;B[oq]
;W[np]
;B[mq]C[these exchanges are probably good for W, so that is one reason for W to tenuki at P4, though the local variation on the lower left seems hard to accept for W])
(;W[cr]
;B[br]
;W[er]C[probably this is the issue]
;B[bm]C[but can't B make this the timing?

logically from the game it seems B is worried W will sacrifice C7 at this point]
(;W[cl]
;B[cs]
;W[go]C[or is this too much of an issue?])
(;W[gq]))))
(;B[cm]C[alphago's standard local joseki]
;W[dn]
;B[cr]))
(;W[po]C[hard to tell when alphago thinks this better

is it when W is stronger locally then this move is better to make some influence?

otherwise R5 in general is better?

This logic doesn't seem to square with the D15 move.])
(;W[cm]C[making the wall bigger, so H4 is heavier but W risks making a stick with no territory. But maybe this is the best move locally as W doesn't have the O16 ladder to play C2 and double hane]
;B[bm]
;W[cl]
;B[en]
;W[dn]
(;B[pn]C[is this too risky?

this is more alphago's style for territory efficiency])
(;B[kp]C[safer, but not alphago's style]))
(;AE[bn][cn][co][do][cp][dp][cq][dq]C[tewari is that B plays first in this corner but with a weird move]
(;W[dp]
;B[cq]C[B invade 3-3 somewhat strange, but maybe it does work well with H4])
(;W[]
;AE[hp]AW[dp]AB[cq]
;B[hp]C[B does this crazy move to tenuki, perhaps less crazy than it looks, since it is natural to try to tenuki ASAP as B is low already with 3-3, and natural to try to counter-attack when W comes close with the shoulder hit. 

But surely it remains overplay?]
;W[cp]
;B[dq]
;W[ep]
;B[eq]
;W[fp]
;B[gr]
(;W[ck])
(;W[po])))
(;W[jq]C[probably too early to counter attack]
;B[cm]
;W[dn]
;B[cr]C[locally huge, and awkward for W to deal with.

B has already gained a lot in the corner and left side, and W is still in trouble]
;W[mq]C[not great for direction])
(;W[bm]C[W lives fast, but H4 gets light]
;B[cm]
;W[dn]
;B[bl]
;W[cr]
;B[am]
;W[bq]
;B[bp]
;W[ap]
;B[bo]C[W really needs another move, and B already gains plenty on the left

The fact that B gets C7 makes H4 a lot lighter - both easier to save and smaller])
(;W[cr]
;B[br]
;W[bm]C[alphago's new joseki]
;B[dr]
;W[bo]
;B[dn]C[alphago's new joseki]
;W[cm]
;B[cs]
;W[bp]
;B[bq]
;W[en]
;B[dm]C[W doesn't seem to have the ladder, so this is an issue])
(;W[qn]C[alphago doesn't seem to play here though it is the standard human move]
;B[qp]C[it seems to be scared of this move, and that W can still be attacked, so it doesn't want to give up so much territory]
;W[pj]C[the point is that W can't necessarily easily enter between H4 and Q3 as the right side isn't strong (and D4 is weak too)]
;B[qh]))
(;W[co]C[alphago seems to only play this move with support on the lower side, e.g. at Q4]))
(;W[cp]C[huh, not here?]
;B[dq]
;W[fq]
;B[eq]
;W[ep]
;B[fr]
;W[dj]C[the top left is not an easy shape to attack?

as W's attachment at C15 makes B stronger. C15 is territorial and not so good for starting an attack?

I don't know.]))
(;B[dg]C[used to be its favourite last year, now it never plays it]
(;W[ch]C[fine art and pros developed a lot of variations for this over the last few months.

is this why?]
(;B[bf]C[new joseki]
;W[fc]LB[cj:B][dj:A][dk:C]
;B[dj])
(;B[bg]C[pros realise this is actually risky]
;W[dj]
(;B[ec]C[now considered possibly overplay]
;W[dd]
;B[ed]
;W[ee]
;B[df]
;W[fe]
;B[eb]
;W[db]
;B[hc]
;W[hd]C[B in trouble surprisingly enough]
(;B[ic]
;W[fh]C[the pro commentary I saw said that B is as good as dead on the left ...

]
(;B[bc]C[it loses the capture race by one liberty as E19 is sente]
;W[be]
;B[dh]
;W[di]
;B[bh]
;W[bi]
;B[cb]C[have to short liberties but]
;W[ea]C[B loses the game]
(;B[gb]
;W[bf]C[E19 gains a liberty])
(;B[ca]
;W[fb])
(;B[fa]
;W[da]
(;B[gb]
;W[ba]C[seki so B dies])
(;B[ca]
;W[fc]C[tesuji!!!])))
(;B[be]C[B can live but]
;W[bd]
;B[ae]
;W[bb]
;B[dh]
;W[di]
;B[bi]
;W[ci]
;B[bh]
;W[bj]
;B[fg]
;W[gg]
;B[eh]
;W[fi]
;B[ff]
;W[gf]
;B[ef]C[yuck]))
(;B[gc]
;W[be]
;B[fg]
;W[id]))
(;B[fd]C[also discovered to be overplay]
;W[ee])
(;B[gd]C[Tan Xiao came up with this when he beat Ke Jie recently, it looks good


C12 and D10 ended up looking so stupid that game - Ke Jie played awfully said the commentator, probably too worried about the alphago match.]
(;W[ef]C[the game locally]
;B[df]
;W[fd]
;B[fe]
;W[fc]
;B[ge]
;W[hb])
(;W[ee]
(;B[ff]C[this just works])
(;B[ef]C[also possible]
;W[fe]
;B[gf])))))
(;W[fc]C[this seems too slow? alphago liked to tenuki this shape]
;B[fq]
;W[cn]
;B[qk]C[game 2 vs Lee Sedol]))
(;B[df]C[many of alphago's other games look like this, though as usual B loses]
;W[fc]
;B[cn]
;W[dk]
;B[fq]
;W[en]
;B[cq])
(;B[fq]C[human joseki]
;W[cm]
;B[cq]
;W[dq]
;B[cp]
;W[do]
;B[co]
;W[dr]
;B[cn]
;W[dn]
;B[bm]
;W[cl]
;B[bl]
;W[ck]
;B[bk]
;W[gp]
;B[cj]))
(;W[po]C[alphago doesn't like this mirror go? why?]))
(;B[ce]C[hmm, why not here]))