(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
C[Master's joseki]
(;B[pd]
(;AB[ic][cd]
;W[qf]C[this human play against the chinese, master likes, known from alphago self play]
;B[nd]
;W[qc]
;B[qd]
;W[rd]
;B[pc]
;W[rb]
;B[qb]
;W[rc]
;B[]
(;W[ec]C[but this invasion shocked humans, played several times by master]
(;B[dc]
(;W[de]
(;B[dd]
;W[id]C[this is the follow up!

It has been played by humans supposedly but only with more B stones around when W is desperate to make life, not this early]
(;B[jd]C[Chen Yaoye]
;W[je]
;B[jc]
;W[ie]
;B[ee]
;W[le]
(;B[lc])
(;B[md]C[this leaves endgame after H17]))
(;B[hd]C[park junghwan]
;W[he]
;B[ge]
;W[gd]
;B[hc]
;W[ed]
;B[gf]
;W[ce]
;B[ee]
;W[db]
;B[bd]
;W[cb]
;B[eb]
;W[fb]
;B[fc]
;W[ea]
;B[fd]
;W[eb]
;B[be]
;W[ef]
;B[fe]
;W[cg]
;B[bf]
;W[bc]
;B[ci]
;W[ch]
;B[cf]
;W[di]
;B[dg]
;W[cj]C[Chen commented that this seems terrible for B, letting W live so comfortably, but that master also plays this as B (I haven't found that game)]))
(;B[ed]C[not good if W has ladder, though Master did play this against Ke Jie, to avoid being pressed low (to get sente where Ke Jie had extra stones locally) though not in the chinese!]
;W[dd]
;B[fc]
;W[cc]
;B[eb]
;W[db]
;B[ec]
;W[ce]))
(;W[ed]C[this is meant to be a very bad exchange for W, so where?]))
(;AB[dg]C[it even played E17 against Ke Jie when Ke had an extra stone!]
;B[dc]
;W[de]
;B[dd]
;W[eg]
;B[eh]
;W[ed]
;B[ee]
;W[ef]
;B[fe]
;W[df]
;B[fh]
;W[db]
;B[cg]
;W[bd]
;B[ce]
;W[cf]
;B[be]
;W[bf]
;B[bc]
;W[gg]
;B[fc]
;W[eb]
;B[fd]
;W[hf]
;B[ge]
;W[gf]
;B[ci]))
(;W[dd]C[there is this famous attach from the self-play]
;B[ce]
;W[de]C[I think it was like this]
;B[dc]
;W[ec]
;B[cc]
;W[df]
;B[cg]
;W[id]
;B[jd]
;W[hc]
;B[jc]
;W[ie]
;B[je]
;W[jp])
(;W[ed]C[normal]
;B[df]
;W[cc]
;B[bc]
;W[dc]
;B[bb]
;W[gc]
;B[ff]
;W[ge]
;B[fe]
;W[fd]
;B[hd]
;W[ib]
;B[jb]
;W[hb]
;B[jc]
;W[gd]))
(;W[qf]
(;B[nd]
(;W[oe]C[master played this several times, and I've seen leela do it very often, but don't remember even seeing it in a pro game, though I've seen it mentioned in commentary/trick play.

However, against Shin Jinseo, it played this at move 9])
(;W[pj]C[on its opponent's side of the board, Master loves this])
(;W[lc]C[master didn't seem to care about this against Nie Weiping]))
(;B[nc]
(;W[qd]
;B[qc]
;W[rc]
;B[qe]
;W[rd]
;B[re]
;W[pe]
;B[rf]
;W[pc]
;B[od]
;W[pb]
(;B[pf]C[Master played this in a game]
;W[oe]
(;B[ne]C[I assume the plan is to fight]
;W[of]
(;B[qg])
(;B[pg]))
(;B[nf]C[net doesn't quite work]
(;W[nd]
;B[oc]
;W[ne])
(;W[of]C[fail]
;B[og]
;W[pg]
;B[ne]
;W[pf]
;B[ph])))
(;B[qg]C[normal, and Master played as W many times]
;W[pf]C[aiming to do this sooner than humans normally expect]
;B[pg]
;W[ne]C[B is also short of liberties]))
(;W[]
(;B[qh]
;W[od]
;B[oc]
;W[qd]
;B[pe]
;W[qe]
;B[qc]
;W[pf]
;B[pc]C[B Master]
;W[ph]
;B[pi]
;W[oh]
;B[oi]
;W[ni]
;B[qk])
(;B[qi]
;W[qk]
;B[qd]
;W[md]C[here]
;B[pg]
;W[ng]
;B[pf]
;W[pi]
;B[ph]C[tenuki])))
(;B[qh]
;W[qc]
(;B[qd]
;W[pc]
;B[od]
;W[rd]
;B[re]
;W[rc]
;B[rf]C[it played here]
;W[nc]
;B[]
;W[pi]C[later]
;B[ph]
;W[oi]
;B[rj])
(;B[pc]
;W[qd]
;B[pe]
;W[qb]
;B[pf]
(;W[qg]C[Master]
;B[pg]
;W[rh]C[tenuki])
(;W[rf]C[normal]))))
(;W[]
;B[nc]
;W[md]C[it played this against gu li]
;B[nd]
;W[mf]
;B[]
;W[pg]
;B[]
;W[qd]
;B[pe]
;W[qe]
;B[qc]
;W[pf]
;B[rd]
;W[re]C[tenuki])
(;W[nc]
;B[oc]
;W[nd]
;B[pf]
;W[kc]
;B[ic]
;W[je]
;B[le]C[sometimes it likes to take vital points immediately, see next]
;AE[nc][oc][nd][je][le][pf]AB[ie]
;W[nc]
;B[ke]
;W[pb]
;B[ne]
;W[pf]C[vital]
;B[nd]
;W[oc]
;B[pe]C[tenuki])
(;W[qc]C[It invades 4-4 shockingly early sometimes, at least twice (Kim Jiseok and ?)]
;B[pc]
;W[qd]
(;B[qf]
;W[rf]
;B[qg]
;W[qe]
;B[pe]
;W[rg]
;B[qh]
;W[ic])
(;B[qe]
;W[re]
;B[qf]
;W[rf]
;B[qg]C[tenuki])))
(;B[]
(;W[pd]
;B[qf]
(;W[nc]
;B[md]
;AB[jj]C[master played this against DeepZenGo, pressing low since W didn't play high]
(;W[nd]
;B[mf]
(;W[ld]
;B[le]
;W[lc])
(;W[me]C[I though this was a more solid way to play]))
(;W[qe]
;AE[jj]AW[dd]AB[dp][pp]C[Gu Li (B) tried it too, but Master kicked! for a huge fight

The kick seems quite shocking to me, when W is normally scared of a big black moyo, but in this case W is trying to severely counter attack, saying N16 is overplay]
(;B[pf]
;W[nd]
(;B[mf]
(;W[me]C[only move to fight back, otherwise R15 looks too early]
;B[le]
;W[ne]C[now R15 looks like it might be a good exchange as Q14 looks bad if W plays P13 to get out]
(;B[nf]C[Gu Li's severe style]
;W[lf]
;B[ke]
;W[lg]C[It seems hard to judge this fight - B has more stones but the corner is very solid, and O14 is right next to it.]
;B[gd]
;W[kc]
;B[df]
;W[fe]
;B[ge]
;W[fd]
;B[gf]
;W[eg]
;B[ch]
;W[pj]C[this seems better than the Q11 I imagined]
;B[ni]
;W[qn]
;B[li])
(;B[kg]C[I think this is possible too]
;W[og]
;B[ph]C[still unclear I think, though B doesn't feel so comfortable]
;W[pj])
(;B[lf]
;W[og]C[this fight seems clearly bad for B, both sides are too heavy - Q14 is useful to attack the corner weaknesses or seal W in, but here, it isn't in a good position, hane T15 or tenuki should be better. ]))
(;W[ld]C[B dreams of this, as if O15 is sente, B is connected]))
(;B[me]
(;W[ne]
;B[nf]
;W[mf]
;B[ng]
;W[lf]
;B[mc]C[this looks very tight for B,]
;W[kd]
;B[nb]
;W[ob]
;B[lb]
;W[jb])
(;W[lb]
;B[ne])))
(;B[mc]C[sometimes possible, but here it looks like an eyeless group]
;W[pf])
(;B[nd]
;W[pf]
;B[oc]
;W[pc]
;B[ob]
;W[qg]
;B[ic]C[my imagination]
;W[jq])))
(;W[]
;B[nc]C[as a shape point, it is very common for Master to counter atari a ko to make it lighter and avoid connecting]
;W[pf]
;B[pg]
;W[nd]
;B[md]
;W[nf]
;B[pe]
;W[oe]
;B[of]
;W[qe]C[Master doesn't connect]
;B[re]
;W[pf]
;B[og]C[it wants W to connect]
;W[mc]
;B[lc]
;W[mb]
;AB[jc]
;B[me]
;W[ne]
;B[nb]
;W[lb]
;B[kb]
;W[ld]
;B[le]C[tesuji]
(;W[rf]
;B[pe]
;W[kc]
;B[qd]
;W[ke]
;B[mg]
;W[oc])
(;W[kc]
;B[kd]
;W[oc]
;B[lc]C[B gets a lot in sente]))
(;AW[nd][qe]
;W[]
;B[nb]C[nice technique]
;W[lc]
;B[qc]
;W[pf]
;B[pg]C[!!]
(;W[rf]
;B[pc]
;W[qg])
(;W[qg]
;B[rf]
(;W[re]
;B[of]
;W[pe]
;B[qh]
;W[rg]
;B[rh]
;W[sf]C[B gets a lot on the outside first]
;B[oi]
;W[pc]
;B[jc]C[maybe aji here])
(;W[qh]
(;B[of]
;W[pe]
;B[re])
(;B[re])))
(;W[pc]
(;B[rg]
;W[rf]
;B[qg]
;W[rd]
;B[of]C[?])
(;B[of]
;W[pe]))))
(;W[qd]
;B[oc]
;AB[qp][nq]C[it shows balance around the positioning of the pincer]
(;W[kc]C[if W plays here, it always]
;B[pf]C[plays here]
;W[pe]
;B[oe]
;W[qf]
;B[pg]
;W[qg]
;B[ph]
;W[qh]
;B[pi]
;W[qj]
;B[ic])
(;W[jc]C[against Huang Yunsong who played here]
;AE[qp][nq]AB[qn][pq]
;B[pg]C[if W applies 1 space less pressure, B dares to go one space further]
;W[pe]
;B[lc]
;W[qj]C[W got into a difficult situation very quickly with this, as the corner is not yet alive, and Master is good at attack]
;B[pi]
;W[pj]
;B[oj]C[!!]
;W[ok]
;B[qi]
;W[pl]
;B[nj]
;W[ne]
;B[qb]
;W[ng]
;B[md]
;W[me]
;B[le]
;W[lf]
;B[ke]
;W[kf]
;B[je]
;W[jf]
;B[ie]
;W[oi]
;B[rj]
;W[rk]
;B[oh]
;W[ni]
;B[nh]
;W[mi]
;B[mh]
;W[li]
;B[ri]
;W[gc]
;B[lh]
;W[ki]
;B[kh]
;W[jh]
;B[ji]
;W[ih]
;B[kj]
;W[jj]
;B[ii]
;W[lj]
;B[hi]
;W[gg]
;B[kk]
;W[lk]
;B[of]
;W[nd]
;B[nc]
;W[nf]
;B[kl]
;W[qo]
;B[qf]
;W[po]
;B[gd])))
(;B[qd]
(;AB[kc]
;W[od]
;B[pf]
;W[qc]
;B[rc]
;W[pc]
;B[rb]
;W[mc]
;B[ne]C[against Fan Tingyu]
;W[kd]
;B[jd]
;W[ld]
;B[jc]
;W[]
;B[kf]
;W[lf]C[tenuki])
(;W[od]
(;B[ld]
;W[pg]
;B[oe]
;W[ne]
;B[of]
;W[pd]
;B[qf]
;W[pe]C[It likes this move]
;B[pf]
;W[qe]
;B[nd]
;W[rf]
;B[qg]
;W[nc]
;B[md]C[tenuki, later B O18 powerful, or W M18]
(;W[]
;B[nb]
(;W[ob]
;B[mc]
;W[fo])
(;W[mc]
;B[oc]
;W[ob]
;B[pc]
;W[re]
;B[pb]))
(;W[lb]
;B[pb]
(;W[qc]
;B[qb]
;W[oc]
;B[rc]
;W[rd]
;B[ra])
(;W[ob]
;B[rd]
;W[re]
;B[pc]
;W[oc]
;B[rb])))
(;B[oc]
;W[nc]
;B[pc]
;W[nd]
;B[qf]
;W[pd]C[W master]
;B[qc]
;W[jd]
;B[le]
;W[kf]
;B[lf]
;W[lc]))
(;W[]
(;B[nc]C[this enclosure is its favourite, along with Q4]
;AW[dd][dp]AB[pp]
;W[qn]
;B[nq]
;W[rp]
;B[fc]
;W[cf]
;B[ql]
;W[qq]
;B[qo]
;W[ro]
;B[pn]
;W[pm]
;B[qm]
;W[rn]
;B[om]
;W[gq]
(;B[pj]C[this is the normal human protection, but])
(;B[oj]C[here or])
(;B[nj]C[here is master's play (this used to be popular for humans I think]))
(;B[nd]))
(;W[oc]
(;B[md]
;W[]
;B[pc]C[this kick , not attach])
(;B[]
(;W[pe]C[If W gets to play the next move, it likes this, though maybe this is normal as it gets B to play low on the bottom right]
;B[qe]
;W[pf]
;B[qg]
;W[pg]
;B[qh]
;W[ph]
;B[pi]
;W[oi]
;B[pj]
;W[qf]
;B[rf]
;W[re]
;B[rg]
;W[qc]
;B[rd])
(;W[qg]
(;B[pe]
;W[og]
;B[nd]
;W[nc]
;B[md]
;W[lc]C[master jumps here, when humans would push once more, to have large follow ups locally (still very unsettled)]
;B[pc]
;W[ld]
;B[nf]
;W[od]
;B[oe]C[there is a cut issue at N17, but W gains on the outside if B cuts, and the M16 O14 exchange looks good])
(;B[pf]C[master played a slightly weird move against Iyama Yuta]
;W[pg]
;B[pc]
;W[od]
;B[qf]
;W[of]
;B[og]C[this fight reminds me of]
;AE[oc][pc][of][pf][qf][og][pg][qg]
;W[of]
;B[qg]
;W[ph]
;B[pg]
;W[og]
;B[oh]
;W[qh]
;B[rg])))
(;AB[qp][nq]
;B[kc]
;AE[kc])
(;B[pc]
;W[od]
;B[pf]
;W[ph]C[Kang Dong yun tried this]
;B[ne]
;W[md]
;B[kd]
;W[pd]
;B[qc]
;W[of]
;B[og]
;W[pg]
;B[qf]
;W[nf]
;B[oh]
;W[pi]
;B[mf]
;W[ng]
;B[oe]
;W[me]
;B[pe]
;W[lf]
;B[mg]
;W[nh]
;B[le]
;W[oi]
;B[lg]
;W[kb]
;B[mc]C[with the outside aji, I'm not clear this is that good for B, but it is very interesting]))))