(;GM[1]FF[4]SZ[19]AP[SmartGo:3.0.1]CA[shift_jis]
GN[RR14_master35_Jiang_Weijie_01_annotated (2)]
PW[Master]WR[9P]
PB[Jiang Weijie]BR[9P]
DT[2017-01-02]
RE[W+1.5]
RU[Japanese]
TM[60.0]
C[Commentary by Michael Redmond 9P

The new moves that Master plays are often hard to understand, but Master makes them work. In this analysis I attempt to explain two unusual corner sequences. 
Jiang Weijie won the LG cup in 2012, after taking several Chinese titles.]
TT[30]MU[1];B[pd];W[pp];B[dc];W[cp];B[ep];W[eq]
C[Master seems to prefer simple joseki, and I have not seen it play a pincer against the high kakari. ]
;B[dp];W[dq];B[co];W[bp]
C[White 10 avoids the more complicated variations of the nadare joseki. ]
;B[fp];W[fq];B[gp];W[gq];B[hp]
C[Master does not seem to have a bias for teritory or thickness, but takes cash when the opponent goes for thickness, and vice versa.]
;W[de]
C[Judging from it's choices of joseki, Master seems to attach even more value to sente than we humans do. White moves ahead to the UL corner.]
;B[dh];W[gd]
C[Master has a new variation for this joseki also. ];B[ee];W[ef];B[fe];W[dd]
;B[fc]
C[ I added a variation to show the most common joseki.]
(;W[ed]
C[When I was a young pro, I was firmly intsructed that to push through like this to take the one Black stone is hopelessly vulgar. ]
;B[fd];W[ec];B[eb];W[db];B[fb];W[cc];B[df];W[cf];B[dg];W[jd]TR[ef]
C[White has sente again, and enters the upper side. Why play so close to the Black wall? Maybe Master plans to make use of the marked stone. What about the UL corner variation that is supposed to be bad for White? Well, I have attempted a tewari analysis (see var). ]
(;B[md]
C[Back to the actual game. Black's pincer is the natural move. ];W[kf]
C[This just looks strange. What if Black plays the vital point (see var)?]
(;B[qn];W[hg]TR[ef]
C[White immediately plays this vital point in the center, killing three birds with one stone. White 38 is strengthening White's group, making use of the marked stone to threaten Black, and reducing Black's potential in the center. After this I think the game is already good for White. ]
;B[he];W[jg];B[gg];W[gh];B[hh];W[gf];B[fg];W[hf];B[ff];W[bo]
C[Now White's upper side group is fairly strong, so White can play away. White 48 makes miai of the left side and a play in the center, making it difficult for Black to build a moyo in this area. ]
;B[nq];W[np];B[mp];W[no];B[pq];W[qq];B[oq];W[pn];B[pm];W[qo];B[rn];W[pr]
TR[mq]
C[White 60 threatens the marked cut. As always, Master plays sharply to keep the initiative. ]
;B[or];W[mo];B[lp];W[lo];B[kp];W[pk];B[on];W[po];B[ol];W[ro]
C[With this move, the LR White group is alive. ];B[qk];W[qj];B[rk];W[qc]
C[Why jump in at the 3-3 point now, when the right side is still big? See the var.]
(;B[qd];W[pc];B[od];W[nj];B[ob]TR[pc:qc]
C[The two marked White stones have become bad moves locally, but in return White now has potential to chase the right side Black group. ]
;W[rj]
C[White takes away Black's base. By chasing Black, White can reduce Black's potential for territory in the center. ]
;B[nk];W[oj];B[mk];W[mj];B[lk];W[ki]
C[White has a small lead. I will end this analysis by saying that the final result of W+1.5 is misleading. After 170 moves, White was ahead by about 5.5 points, and Master gave a few points back in the small yose. This is a pattern that I saw in all of the close games. ]
;B[qr];W[rr];B[ps];W[rp];B[pi];W[ph];B[qh];W[qg];B[qi];W[pj];B[pg];W[oh]
;B[rg];W[qf];B[rf];W[pf];B[nf];W[of];B[ng];W[og];B[re];W[iq];B[kj];W[ji]
;B[rs];W[sr];B[ik];W[hi];B[cn];W[bn];B[cl];W[cm];B[dm];W[bm];B[dl];W[gj]
;B[gl];W[ge];B[bg];W[bf];B[bd];W[be];B[fh];W[gi];B[jr];W[ir];B[ko];W[nm]
;B[pl];W[kn];B[jn];W[km];B[jm];W[kl];B[mm];W[nn];B[jl];W[lc];B[mb];W[hb]
;B[cg];W[lb];B[hq];W[hr];B[la];W[ka];B[ma];W[jb];B[bl];W[ej];B[fk];W[ei]
;B[di];W[ne];B[me];W[oe];B[nd];W[mf];B[lj];W[li];B[lf];W[mg];B[lg];W[mh]
;B[ke];W[jq];B[kr];W[je];B[kg];W[jf];B[ba];W[cb];B[kd];W[kc];B[ag];W[ae]
;B[kq];W[rm];B[qm];W[sn];B[rl];W[sm];B[sl];W[so];B[ri];W[si];B[sh];W[sj]
;B[ml];W[ln];B[jj];W[al];B[ak];W[am];B[dj];W[ek];B[el];W[ij];B[gk];W[mc]
;B[nc];W[oi];B[rh];W[dk];B[ck];W[eh];B[eg];W[ih];B[ha];W[ia];B[ga];W[om]
;B[gb];W[gc];B[op];W[oo];B[ip];W[kk];B[jk];W[rc];B[pb];W[qe];B[rd];W[bj]
;B[bk];W[gr];B[hk];W[nb];B[na];W[dn];B[do];W[nl];B[ok];W[jp];B[jo];W[oa]
;B[pa];W[js];B[ks];W[ss];B[is];W[qs];B[ic];W[ib];B[rs];W[ea];B[hj];W[ii]
;B[hs];W[gs];B[js];W[jc];B[kh];W[qs];B[cq];W[cr];B[rs];W[ld];B[le];W[qs]
;B[bq];W[br];B[rs];W[sk];B[ql];W[qs];B[cd];W[ce];B[rs];W[bc];B[qs];W[ns]
;B[mq];W[da])
(;B[pc];W[qd];B[qe];W[re];B[qf];W[rf];B[qg];W[rg];B[qh];W[iq]LB[cn:A]
C[If Black plays this way, the right side will lose it's value, so White can play away at 10 or A. ]
))
(;B[if]
C[I have no idea what Master planned to do against this. Black 1 is the natural move, and I would play here without hesitation. Black's moyo in the center is expanding, and White has awkward shape. ]
))
(;B[qn]
C[When confronted with a new shape such as the UL corner, pros can attempt to explain it with a technique called Tewari. One form of Tewari is to find a more familiar order of moves that ends up with a similar shape, and compare that with the actual shape. I will do so in the LR corner. ]
;W[nq];B[lp];W[rp];B[on]
C[All of the moves are natural, but while White's moves are necessary to protect the corner, Black seems to be playing too many moves in this locality. ]
;W[pj];B[np];W[pm];B[pn];W[op];B[mq];W[no];B[mp];W[nr];B[oo];W[qf];B[ro]
;W[qo];B[rn];W[qq]TR[mq][nr]LB[qp:A][po:B]
C[Another aspect of Tewari is to add or subtract stones, an equal number for each side, to make the two positions the same. If we assume a captured Black stone at A to exchange for White B, and remove the marked exchange, we have the UL shape. None of White's moves have been wasted, so White has an efficient shape. Black has good shape, but has invested a lot of stones and does not have any territory yet. This seems to be at least even, or maybe good for White. ]
))
(;W[cc];B[ec];W[ff];B[ge];W[cb]
C[This is the most popular joseki for White. ]))

