(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[6.50]TM[60] PW[Magist]PB[Xie Erhao]WR[9p]BR[4p]RO[04]PC[Tygem]C[surely Xie Erhao is 4p not 9p Highlights 10-23 still playing the magic sword joseki against the Kobayashi. totally changes how we think about that fuseki. !!! weiqitv presented a short analysis on: 26-46 a huge invention on a 3-4 joseki !!! 77, 90, 105 some standard good to know tesuji ! I do a more thorough endgame than normal, I estimate Master gave up about 11 points with 144, 160, 198, and I'm not counting the potential for A15 ko with several good threats on the top right and centre B may have lost a little with 153, 163. End W leading 7.5.]RE[W+Resign]TC[3]TT[20] ;B[qd] ;W[pp] ;B[cd] ;W[dp] ;B[cn] ;W[fq] ;B[qn] ;W[nq] ;B[dj] (;W[ed]C[this has long been considered overplay] ;B[hd] (;W[dg]C[this has always been said to be wrong and an overplay] ;B[ee] ;W[fe] ;B[ef] ;W[dd] ;B[ce]C[because B dares to play here even without the ladder] ;W[cc] ;B[bc] (;W[bb]C[this is non-existent on waltheri database] ;B[fd] ;W[db]C[locally submissive, but taking sente is very important] ;B[cf]C[B gets everything he wants] ;W[oc] ;B[ld]C[this pincer seems like it should be ok so] (;W[pe]C[formerly considered overplay in these surroundings] (;B[pd]C[I think the lesson to be learned is that cutting is probably the overplay, as it hurts M16 too much] ;W[od] ;B[oe] (;W[qe]C[! very tight play I've seen leelabot do this often though this is the principle of squeezing all the profit from pressuring the corner first on the right, and being prepared to sacrifice something later.] ;B[re] ;W[rf] ;B[rd] ;W[ne]C[and I've seen leelabot do this too, but for pros it is a shocking new variation] ;B[of] ;W[pg] (;B[nf]C[mistake B is probably thinking that this is required to cut at Q14, but it just makes your opponent stronger (e.g. don't atari cross-cut)] ;W[me] ;B[pc] ;W[ob] ;B[pb]C[but if B still doesn't dare to cut, O14 becomes very heavy] ;W[le] ;B[jd] ;W[qi] (;B[nh] ;W[lc]C[W may not make that many points, but the corner is small and the centre is weak, in B's area] ;B[qk] ;W[pj]C[something has gone wrong for B with rubbish shape for the O12 group, it is more like W is attacking B in B's area. (though W doesn't have many points) weiqitv basically said B can't catch up from this] ;B[pk] ;W[nj] ;B[lg] ;W[kd] ;B[kc] ;W[ke] ;B[lb] ;W[mc] ;B[lj] ;W[ok] ;B[oi] ;W[oj] ;B[on] ;W[pm] (;B[qm] ;W[pl] ;B[ql] ;W[nm] ;B[om] ;W[ol] ;B[pn] ;W[rp] ;B[nn] ;W[mm] ;B[mn] ;W[km] ;B[jg] ;W[kk] ;B[mq] (;W[np] ;B[mp] ;W[kj] ;B[mr] ;W[nr] ;B[iq] ;W[jc] ;B[ic] ;W[kb] ;B[if]C[very painful to lose such a big point in sente - this is the value of L10] ;W[bp] ;B[bo] ;W[dk]C[classic move to deal with B5 and stop B's area getting too big even though W doesn't have either ladder!!] (;B[ck] ;W[cl] (;B[dl] ;W[ek] (;B[el] ;W[cj]C[a must for the aji (make a 3rd line for a 2nd line exchange to get B overconcentrated)] ;B[bk] ;W[fl] ;B[bl] ;W[fk] ;B[di]C[W is satisfied in sente a standard variation] ;W[fc] ;B[gd] ;W[fi] ;B[bq]C[this must be worth nearly 15 points] (;W[cq] ;B[ap] ;W[hr]C[but this must also be about 15 - B's area is reduced a lot too] (;B[ir]C[very hard to choose here, B's choice seems fine, hmm actually maybe not as good] ;W[hq] (;B[io] ;W[ip] ;B[jp] ;W[hp] ;B[jo] ;W[eh] ;B[ch] ;W[li]C[pretty big since if M6 is not sente, W has L5, though maybe master is just playing safe now] ;B[lh] ;W[mi] ;B[cr] ;W[dr] ;B[cp] ;W[dq]C[expected - it wasn't big enough for W to defend against, about 4 points] ;B[ro]C[ huge, practically double sente 3 points, but W's corner is totally solid now. If W played here, W's follow up would be 6 points ish. so about 3+6/2= 6 in reverse sente for W, ~12] ;W[qq] (;B[gh]C[large, feels like 10 points, in almost reverse sente] ;W[gi] ;B[jb] ;W[kc] ;B[hi] ;W[hj] ;B[hh] ;W[bd]C[over 8 points + defending against A18 ko possibility] ;B[be] ;W[ac] ;B[ns] ;W[os] ;B[ms] ;W[pr] ;B[hs]C[over 7 points] ;W[gs] ;B[is] (;W[qg]C[prevents S13 and S11 but seems to be only about 2 points or less reverse sente locally. This aims at the corner aji though S18] ;B[oa]C[3 point double sente W lost about 3-4 points with this exchange eventually ] ;W[br]C[7 points + life] ;B[ar] ;W[bs] ;B[ij] ;W[ik]C[ugly shape] ;B[hk] ;W[gj] (;B[rj]C[2+4.5/2 in reverse sente ish so about 8.5.] ;W[ii]C[nearly 4 in reverse sente ] ;B[ih] ;W[jj] ;B[do]C[prevents D6 E7] ;W[ri]C[only less than 5 points] ;B[fp] (;W[fr]C[not necessary I think] (;B[kn]C[too crude?] ;W[jm] (;B[fm]C[F18 is also huge, but B needs to do something at the boundary here? as the L6 K7 exchange gives away strength. hmm, is this really biggest?] ;W[gm] ;B[fn] (;W[gb]C[protects against F18, huge] ;B[hb] ;W[ja] ;B[ma]C[3 points in sente] ;W[nb] ;B[na] ;W[ib] ;B[ha] ;W[je] ;B[ie] ;W[la] ;B[pa] ;W[mb] ;B[ep] ;W[cg] ;B[bg] ;W[dh] ;B[ci] ;W[gn]C[big to protect against H7] ;B[go] ;W[ho] ;B[in] ;W[gp] ;B[fo] ;W[im] ;B[ae]C[a big deal about the ko at A15 A14 F14] ;W[qj] ;B[rk] ;W[rb] ;B[rc] ;W[qb] ;B[sb]C[S19 for seki worth 9 points] ;W[ga]C[prevents F19, about 6 points] ;B[ra] ;W[kh] ;B[kg] ;W[jh] ;B[qo] ;W[qp] ;B[sg] ;W[sh] ;B[sf] ;W[rg] ;B[se] ;W[ia] ;B[hc] ;W[ln] ;B[lo] ;W[lm] ;B[no] ;W[jn] ;B[ko] ;W[fh] ;B[fg] ;W[so] ;B[sn] ;W[sp]C[W+R] ;B[eq] ;W[er] ;B[hn] ;W[hm] ;B[pf] ;W[qf] ;B[gc] ;W[fb] ;B[ad] ;W[bc] ;B[sj] ;W[eg] ;B[ff] ;W[og] ;B[ng] ;W[oh] ;B[ni] ;W[pi] ;B[si] ;W[rh] ;B[ej] ;W[fj] ;B[id] ;W[jf] ;B[aq] ;W[cs] ;B[op] ;W[oq] ;B[oo] ;W[mh] ;B[mg] ;W[mf] ;B[ig]TW[aa][ba][ca][da][ea][fa][ka][ab][cb][eb][jb][lb][dc][ec][nc][ld][md][nd][ph][qh][ji][ki][ij][lj][mj][gk][hk][jk][lk][mk][nk][gl][hl][il][jl][kl][ll][ml][nl][gq][pq][rq][sq][cr][gr][or][qr][rr][sr][ds][es][fs][ps][qs][rs][ss]TB[qa][sa][qb][rb][qc][sc][sd][fe][ge][he][af][bf][gf][hf][ag][gg][hg][ah][bh][ai][bi][aj][bj][cj][ak][sk][al][cl][rl][sl][am][bm][cm][dm][em][rm][sm][an][bn][dn][en][rn][ao][co][eo][mo][bp][kp][lp][jq][kq][lq][jr][kr][lr][js][ks][ls]C[W+7.5]) (;W[] ;B[fb] ;W[ib] ;B[hb] ;W[ja])) (;B[fb]C[though what does W play?] (;W[hn] ;B[ho] ;W[gn]) (;W[em] ;B[dm] (;W[hn] ;B[fm] ;W[gm] ;B[fn] ;W[ib]) (;W[en] ;B[hn] ;W[dn] ;B[cm] ;W[eo] ;B[gn])))) (;B[im] ;W[ko] ;B[] ;W[lo] ;B[mo] ;W[kq]C[horrifying])) (;W[fo] (;B[gp] ;W[go] ;B[gr] ;W[fs] ;B[fr] ;W[es] ;B[ho]) (;B[fr] ;W[gr])) (;W[ep] ;B[fo] ;W[gp] ;B[fs] ;W[gr] ;B[ds] ;W[cs] ;B[er] ;W[fr])) (;B[il]C[should be here ])) (;W[] ;B[rg] ;W[qg] ;B[sf] ;W[qf]C[still issues in the corner])) (;B[] (;W[hg]C[troublesome] ;B[ih]C[W was probably worried B might counter]) (;W[fg] ;B[ff] ;W[hg]))) (;B[ip]C[this does seem too slow, especially when B got the H1 endgame later])) (;B[hq] ;W[ir] ;B[jr] ;W[gq]C[cut at K3] ;B[is]C[the sente gets a lot of endgame] ;W[gs] ;B[jn]C[just protect? but does the aji remain a problem])) (;W[ap]C[bad idea] ;B[cp] ;W[cq] ;B[co] ;W[br]C[reduced to playing on the second line in your area, with 4-4 getting captured is a no-no] ;B[dq] ;W[cr] ;B[ep] ;W[dr] ;B[ro]C[and again])) (;B[cj] ;W[dm] ;B[el] ;W[cm]C[I guess this makes B5 look bad] ;B[cp] ;W[cq] ;B[do] ;W[co]) (;B[bl] ;W[cj] ;B[cm] ;W[bk] ;B[cl] ;W[ej] ;B[di] ;W[ei] ;B[ci] (;W[co]C[if W gets this, B's shape is a little embarrassing]) (;W[fc]C[W needs to do something about the centre first] ;B[gd] ;W[eg]))) (;B[bl]C[sometimes ok, here it is very submissive] ;W[dl] ;B[bj] ;W[ej]) (;B[bk] (;W[ej]C[is this playable when W doesn't have the ladder?] ;B[ek] ;W[dl] ;B[el] ;W[cj] ;B[di] ;W[bl] ;B[bj] ;W[dm]) (;W[dl] (;B[bl] ;W[ej]) (;B[ej] ;W[bl] ;B[en] ;W[fl])))) (;B[cj] ;W[fk]) (;B[ej] ;W[cj] (;B[ci] ;W[ck]C[this might be good here]) (;B[ek] ;W[cl]) (;B[ck] ;W[cl] ;B[bk] ;W[bl] ;B[bj] ;W[ek])) (;B[ek] ;W[dl] ;B[cj] ;W[el])) (;W[mp] ;B[np]C[this is a problem] (;W[no] ;B[lp]) (;W[lq] ;B[oq] ;W[mr] ;B[op])) (;W[mr]C[this would be standard resistance] (;B[nr] ;W[mp] ;B[lq] ;W[np]C[this is aggressive, but risky] (;B[lr] ;W[or]) (;B[ln] ;W[lm] ;B[or])) (;B[lq]C[maybe just here for miai for M6 and O4, B threatens P3]))) (;B[pn] (;W[rl]C[tesuji combo] (;B[qm] ;W[rk] ;B[ol] ;W[ql] ;B[pl] ;W[qj]) (;B[rk]C[but this seems annoying here] ;W[qm] ;B[rn] ;W[rm] ;B[om] ;W[ol] ;B[pl] ;W[rj] ;B[sk] ;W[sj] ;B[sm])) (;W[rk]C[also available] (;B[rl] ;W[rj] ;B[rp]) (;B[rj] ;W[rl] ;B[qj]C[it looks crazy for B to play like this, but I can't see exactly why it is bad] (;W[qm]C[here?] ;B[om] ;W[ol]) (;W[pl]C[if you're not careful] ;B[ri] ;W[qh] ;B[ql] ;W[qm] ;B[rm] ;W[rn] ;B[sm] ;W[sn] ;B[ol] ;W[sl] ;B[rm] ;W[sm] ;B[om] ;W[rm] ;B[ro]))) (;W[qm]C[too crude] ;B[om] (;W[ol] ;B[rm] ;W[rl] ;B[pl]) (;W[rn] ;B[ol] ;W[rl] ;B[rk] ;W[ro] ;B[pl]C[the upper W group is more important])))) (;B[mc] ;W[md]C[B can't get sente] ;B[lc] ;W[lg])) (;B[pc]C[recently pro analysis says you have to play as tight as possible to threaten W - don't defend the centre yet the principle is also not to exchange aji when it is unclear which is better (O14 and P13 both sente, so B is fine), and if W is split it will be difficult] ;W[ob] ;B[nd] ;W[md] ;B[me] (;W[nf] ;B[og] ;W[nc] ;B[qg] ;W[lc]C[this is the suggested variation from pros, it is very similar to the standard variation from the N16 attach to my eyes it looks good for W in these surroundings, aim at F15 running, right side invasion] (;B[pk] ;W[dk]C[?]) (;AE[ob][lc][nc][pc][rd][me][ne][qe][re][nf][of][rf][og][pg][qg]C[tewari, I can't see a reason for W to be unhappy] (;B[me]C[it seems similar to this mistake to me] ;W[ne] ;B[of] ;W[nf] ;B[nd]C[???] ;W[nc] ;B[og] ;W[lc] ;B[qg] ;W[qe] ;B[pc] ;W[ob] ;B[re] ;W[rf] ;B[rd] ;W[pg]) (;B[of]C[or] ;W[lc] ;B[pc]C[good exchange] ;W[ob] ;B[qg] ;W[qe] ;B[re] ;W[rf]C[close exchanges? weiqitv said this is good exchange for B since W has no follow up after W R18, but W does gain something on the right since B didn't cut R14] ;B[rd] ;W[ne] ;B[og]C[close exchange] ;W[pg]C[bad move, but maybe worth 1/2 move for the R12 aji] ;B[nd] ;W[nc]C[very bad for B] ;B[me] ;W[nf]C[looks bad exchange for B] ;B[] ;W[qh]C[this is annoying] (;B[rg] ;W[oh] ;B[pf] ;W[ng] ;B[ph] ;W[pi]) (;B[ph] ;W[pi] ;B[pf])) (;AE[md] ;B[] ;W[ne] ;B[of] ;W[md] ;B[qg] ;W[nf] ;B[og] ;W[lc] ;B[pc] ;W[ob] ;B[nd] ;W[nc] ;B[me] ;W[pg]C[the final exchange looks good for W]))) (;W[nc]C[not great says pros] ;B[nf] ;W[le] ;B[nd] ;W[mc] ;B[lf] ;W[ke] ;B[pf]))) (;W[md]C[standard, but Master says it is too heavy when B is solid] ;B[of] ;W[me] (;B[lc]C[B can attack without protecting at R13]) (;B[qg]C[standard variation, but W satisfied] ;W[lc]))) (;B[qe]C[aim to keep attacking W])) (;W[qg]C[standard] ;B[pe] ;W[qj])) (;W[de] ;B[df] ;W[cf] ;B[bf] ;W[cg] ;B[eg]C[complicated]) (;W[gd]C[it is always aiming at the D15 cut])) (;W[eh] ;B[cf] ;W[de] ;B[ce] ;W[ch]C[so you see this sort of variation]) (;W[jc]C[this sort of move has been popular lately, but feels to me like it must be overplay])) (;W[fc]C[most standard] ;B[ed]) (;W[fd] ;B[ec] ;W[jd] ;B[fc]))