(;B[qd]GM[1]FF[4]SZ[19]AP[SmartGo:2.5.0.0]
GN[WAGC Rd7]
PW[Ondrej Silt 6d, Czechia]
PB[Yohei Sato 6d, Japan]
EV[WAGC]RO[7]
DT[2010-05-29]
PC[Hangzhou, China]
KM[6.5]
RE[W+]
US[transcribed by Chris Garlock]
TM[3600.0]OT[3x30]
AN[Michael Redmond 9P]
C[WAGC Rd7
May 29, 2010
Hangzhou, China
W: Ondrej Silt 6d, Czechia
B: Yohei Sato 6d, Japan
Commentary by Michael Redmond 9P, transcribed by Chris Garlock
]
;W[dc];B[dq];W[co];B[de];W[dh];B[gd];W[ee];B[ef];W[fe];B[dd];W[fc];B[cc]
;W[ec];B[ff];W[ge];B[bd];W[kc];B[dl]
C[Silt played the same fuseki in his 6th-round game with Sweden; B19 is where this game differs.]
;W[ep]
C[If I were B, just as in the game with Sweden, I'd be looking to take sente in the lower left corner so as to play first in the empty corner]
(;B[eq];W[fp];B[gq];W[gp];B[hq];W[hp];B[ip];W[io];B[jo];W[fq];B[fr];W[er]
;B[gr];W[jp];B[iq];W[in];B[ei]
C[The left side has become more urgent now, because of the potential size of a white moyo in the area, so it's reasonable for B to protect the side at this point]
;W[cq];B[dr];W[ko];B[oc];W[jq];B[qp];W[oq];B[eh];W[qn];B[pq]
C[This looks submissive but because of the thickness emanating from the marked stones, it's correct for B to simply take the corner territory]
TR[ko][jp:jq];W[op];B[or];W[nr];B[pr];W[ph];B[id];W[ib];B[po];W[pm];B[oo]
;W[mq];B[qf];W[rp]
C[the key point to take black's eyespace, indirectly preventing black from invading on the right ]
;B[rq];W[ro];B[om];W[pl];B[ol];W[ok];B[nk];W[nl]
C[This is a very aggressive move leading to a semeai that decides the game]
;B[nm];W[ml];B[np];W[nq];B[pk];W[oj];B[qk];W[rl];B[mm];W[ll];B[rk];W[qi]
;B[rm];W[ql];B[sl];W[rn]
(;B[sn]LB[sq:A][pn:B]
C[W's game move at A is a mistake; B leads to a ko. See variations]
(;W[sq]
C[A wins the semeai for Black]LB[pn:A]
(;B[sp]
C[premature; now W will win];W[so];B[sm];W[rr];B[qq];W[pn]
C[Now W takes the key point to win the semeai. The game is now hopeless for B. No further comments]
;B[sr];W[ss];B[qr];W[rj];B[mp];W[lp];B[qs];W[bl];B[kd];W[jc];B[jd];W[lc]
;B[ig];W[cl];B[cr];W[dk];B[cj];W[ek];B[cp];W[bo];B[bj];W[hj];B[jj];W[ij]
;B[lr];W[mo];B[no];W[kr];B[lq];W[kq];B[jl];W[ji];B[lm];W[kl];B[km];W[jm]
;B[im];W[jn];B[kk];W[mk];B[ki];W[il];B[rh];W[ri];B[ik];W[jk];B[hb];W[hc]
;B[jl];W[hl];B[jh];W[ii];B[nj];W[jk];B[os];W[ni];B[ms];W[nb];B[ob];W[nc]
;B[ic];W[gb];B[qh];W[mj];B[pi];W[pj];B[sh];W[oi];B[na];W[od];B[pd];W[ma]
;B[oa];W[kh];B[mb];W[mc];B[kg];W[lh];B[la];W[lg];B[jb];W[ha];B[ka];W[le]
;B[mf];W[lf];B[oe];W[hd];B[hh];W[ih];B[jf];W[nd];B[fj];W[fk];B[gj];W[bq]
;B[gk];W[gl];B[dp];W[do];B[bp];W[ap];B[ar];W[dj];B[di];W[hk];B[db];W[eb]
;B[pg];W[cb];B[bb];W[da];B[aq];W[ks];B[ns];W[ne];B[of];W[ir];B[ao];W[an]
;B[hf];W[ba];B[mg];W[ab];B[bc];W[jg];B[bn];W[ap];B[jh];W[ao];B[jg];W[ak]
;B[aj];W[ci];B[ch];W[hi];B[gi];W[gh];B[hg];W[ej];B[fi];W[ls];B[mr];W[gf]
;B[gg];W[mh];B[hs];W[is];B[he];W[hr];B[rs];W[gs];B[es];W[ng];B[nf];W[og]
;B[si];W[sj];B[ck];W[dm];B[ed];W[fd];B[mn];W[lo];B[on];W[be];B[ad];W[bk]
;B[bi];W[ke];B[je];W[hs];B[fs];W[me];B[ld];W[ia];B[sr];W[sk];B[ma];W[sp]
;B[df];W[ca];B[ac];W[aa];B[kb];W[qj];B[md];W[kf];B[lb];W[ja];B[qo];W[kn]
;B[ln])
(;B[pn]
C[In this variation B wins the semeai];W[qm];B[sm];W[rr];B[qq]LB[sp:A][sr:B]
C[A & B are miai]
(;W[sr];B[sp];W[so];B[sk];W[rj];B[qo];W[sp];B[rs])
(;W[sp];B[sr];W[ss];B[qo];W[rj];B[sk];W[pj];B[so];W[sr];B[qr])))
(;W[qm];B[sm]
(;W[so];B[sk])
(;W[rj];B[sp];W[so];B[sk];W[sq];B[qo];W[rr];B[qq];W[sr];B[pn];W[sp];B[rs]
))
(;W[pn]
(;B[on];W[so];B[sm];W[rj];B[qo];W[pj]LB[qm:A])
(;B[sk]LB[rh:A];W[rj];B[sp];W[so];B[sq];W[sm]
C[This looks like the correct variation];B[hb];W[ic];B[sn];W[ob];B[sm];W[pj]
;B[on];W[qj];B[qo])))
(;B[pn];W[qm];B[sm];W[rj];B[sp];W[pj];B[so];W[qj];B[sk];W[sj]))
(;B[dp];W[do];B[eo];W[dm];B[fo];W[em];B[gq]
(;W[dj]LB[pq:A][cl:B]
C[If W tries to break away to get to the empty corner first -- say at A -- Black will commence an attach beginning with B (see var)]
;B[qp]
C[even result on the left side])
(;W[pq];B[cl])))

