(;AP[GOWrite:3.0.15]FF[4]CA[UTF-8]SZ[19]GM[1]ST[0]FG[259:]HA[0]KM[7.5]GN[ ]PM[2]PW[Sorin Gherman]RE[B+3.5]C[Commentaries by Yamashiro Hiroshi 9p and Tsuruta 4p.]PC[San Diego, CA]DT[2017-08-07]PB[Yongfei Ge]EV[US Go Congress 2017, Masters]RO[3]GC[Yongfei Ge http://agagd.usgo.org/player/10617/];B[dp];W[pd];B[dc];W[pp];B[nc];W[qf];B[jd];W[cf];B[cd];W[dj]
;B[dh];W[ch];B[dg];W[cg];B[df];W[di]
(;C[Since black is further away, white has the choice to ignore it\; responding as in the game is also fine though.]B[cm];W[ck];B[fg];W[lc];B[ld];W[kc];B[kd];W[jc];B[mc]
(;W[hc]L[ic]C[Best is at A.];B[id];W[gb]
(;B[lb]
(;W[ka]L[kb]C[Mistake, should be at A.];B[fc];W[fb];B[eb];W[kb];B[ib];W[ic];B[nb]
;W[ia]LB[hb:A]C[White is alive with seki if playing A - I totally missed this during the game...

White traded one move here for 5 points, which is very small at this stage];B[qc];W[hb];B[qd];W[qi];B[nq];W[qn];B[pr]
(;W[qq];B[kq]
;W[cq]C[This is fine, although given white's strong position above, black cannot enclose the corner with one move, which means that white is in no rush to invade it either.];B[dq];W[cp];B[co];W[bo];B[bn];W[do];B[cn];W[dr];B[er];W[cr]
;B[fq];W[bp];B[eo]
(;W[lp]C[This is also one of he variations that Yamashiro suggested.];B[lq];W[np];B[oq];W[mp];B[kp];W[ko];B[jo];W[kn];B[jn];W[km]
;B[nj]
(;W[pj]L[jm]C[Yamashiro wants to play A instead.

No more comments after this move, see the variations for A for comments.];B[nl];W[lj];B[nh];W[pe];B[ne];W[lh]
(;B[pg];W[qg];B[ph];W[em];B[en];W[gm];B[jm];W[go];B[hp];W[gp]
;B[gq];W[jl];B[oj];W[ho];B[ip]
(;W[il])
(;W[dm];B[dn];W[il];B[pk];W[qk];B[pl];W[ql];B[pi];W[qj]))
(;B[ph];W[qh];B[pg];W[em];B[en];W[gm];B[jm];W[dm];B[dn];W[go]
;B[hp];W[gp];B[gq];W[jl];B[oj];W[ho];B[ip];W[il];B[pl];W[ql]
;B[pk];W[qk];B[pi];W[qj];B[gi];W[ce];B[de];W[be];B[rf];W[qg]
;B[bd];W[ad];B[ac];W[ae];B[bc];W[hd];B[ge];W[he];B[gf];W[pm]
;B[om];W[on];B[nn];W[mm];B[oo];W[pn];B[nm];W[mk];B[nk];W[bl]
;B[qe];W[pf];B[rg];W[pc];B[pb];W[fj];B[gj];W[fi]
(;B[gk])
(;B[fh];W[gk];B[dl];W[el];B[cl];W[dk];B[ij];W[ob];B[qb]
(;W[oc];B[rh];W[ri];B[rr];W[qr];B[qs];W[rq])
(;W[ih];B[ii];W[hh];B[gh]
(;W[oc];B[rh];W[ri];B[rr];W[qr];B[qs];W[rq])
(;W[mf];B[nf];W[mg];B[ng];W[oc];B[rh];W[ri];B[rr];W[qr];B[qs]
;W[rq];B[ki];W[me];B[md];W[kj];B[ml];W[ll];B[jh];W[jg];B[mj]
;W[kh];B[ji];W[li];B[lk];W[kk];B[ig];W[hg];B[if];W[hf];B[jf]
;W[fd];B[gd];W[gc];B[ec];W[gg];B[ff];W[kg];B[kf];W[mn];B[no]
;W[mi];B[ni];W[pq];B[or];W[fn];B[hn];W[io];B[in];W[gn];B[hl]
;W[hm];B[hk];W[gl];B[ds];W[br];B[cs];W[bs];B[es];W[ik];B[hj]
;W[mq];B[mr];W[of];B[mo];W[lo];B[fa];W[ga];B[ea];W[og];B[oh]
;W[eh];B[eg];W[ei];B[po];W[qo]
;C[This was played much earlier.]B[sh];W[sr];B[rs])))))
(;W[jm]C[Yamashiro want to turn here, to aim at black's weaknesses.];B[pj];W[qj];B[pk];W[oh];B[mi];W[mq];B[mr];W[nr];B[or];W[lr]
;B[ns];W[jp];B[ip];W[jq];B[kr];W[jr];B[ls]
(;W[ho];B[io];W[hp];B[iq];W[hq];B[ir];W[hm];B[op];W[oo];B[po]
;W[pn];B[no];W[on]
;B[lo]C[This is black's compensation, after white reduced the lower side.])
(;W[em];B[hn];W[dn];B[op])))
(;W[np]C[Yamashiro's first instinct move.];B[mq];W[oj];B[ln])
(;W[kp]C[Another option suggested by Yamashiro, in order to simplify the options on the lower side.];B[lp];W[lo]))
(;W[mq]C[Tsuruta likes this way];B[mp];W[lq];B[lp];W[nr];B[oq];W[jq];B[kp];W[ir];B[qq];W[qp]
;B[or]
;W[pk]C[White absolutely needs to defend around this area, since black has thickness both above and below, so black gets to play first on the lower side next.]))
(;C[Correct move in this situation, when black did not push yet.]W[kb]))
(;B[ic];W[ib]
;C[If black pushed already, white has both A and B as options.]LB[kb:A][ka:B]B[lb]))
(;W[ic]C[Best move, according to Yamashiro];B[gc]
(;W[id])
(;W[gb];B[fb];W[hc];B[gd];W[ga]))
(;W[gc];B[ic];W[ib];B[jb];W[id];B[lb];W[hc];B[kb];W[ic]
;B[if]C[during the game I worried about this, but black cannot attack strongly...];W[ie]))
(;B[cl]
;C[Black usually treats this as a forcing move and plays elsewhere next.]W[ck]))
