(;GM[1]FF[4]SZ[19]AP[SmartGo:2.8.3.0]CA[utf-8]
GN[2012.05.14_WAGC_Rd4_US-Japan_Yokoku]
PW[Yuan Zhou (US)]WR[7d]
PB[Seizoh Nakazono (Japan)]BR[8d]
EV[2012 WAGC]RO[4]
DT[2012-05-14]
KM[6.5]
RE[W+T]
US[Kazunari Furuyama & Chris Garlock]
RU[Simple]
AN[So Yokoku 8p]
C[2012 WAGC
Round 4
Yuan Zhou (US) 7d
Seizoh Nakazono (Japan) 8d
Commentary by So Yokoku 8P (translated by Ting Ting Chen)
Transcribed by Chris Garlock

This fourth-round contest between the US and Japan turned into a controversial and dramatic slugfest involving a series of severe attacks, both players in overtime, a key losing move in the late middle-game, a ko fight with both players in their last period of overtime and a sudden loss by Japan on time, complicated by a clock dispute that went all the way up to the tournament’s chief referee. See So Yokoku 8P’s commentary on the game to see what all the excitement was about.
]
;B[qd];W[dp];B[cd];W[pp];B[qn];W[ql];B[np];W[pn];B[pm];W[qm];B[pq];W[qo]
;B[qq];W[on];B[kq]
C[this joseki is good for b to take the corner and w gets moyo potential]
;W[oc];B[ec];W[qg];B[cn];W[fq];B[bp];W[pe];B[jd];W[ci];B[cq];W[iq];B[cg]
;W[cl];B[en]
(;W[bn]
C[A is also possible and big; the game move is ok but not as good as A]LB[dq:A]
;B[co];W[qe]
C[big];B[ei];W[dh];B[bj];W[cj];B[bi];W[bk];B[ch];W[di];B[dk];W[ek];B[dl]
;W[ck];B[ej]
C[severe attack by b];W[eh];B[fk];W[bd]
C[(gasps) this is a little strange];B[cc]
C[bad exchange; loses aji];W[df];B[cf];W[de];B[ce]
C[black gets an advantage from this sequence];W[fe];B[ob];W[pb];B[nc];W[pc]
;B[fg];W[fh];B[gg];W[ff];B[hr]
C[this is ok];W[ir]
(;B[gq]
C[no good];W[gp];B[fr];W[hq];B[gr];W[fp];B[dq];W[lq]
C[now w gets to attack black instead of the other way around; w is thick in this area now]
;B[lp];W[kr];B[mq];W[lr];B[kp];W[mr];B[nr];W[mo];B[mp];W[io];B[nd];W[fc]
;B[hc];W[gc];B[hd];W[he];B[hf];W[ie];B[gd];W[fd];B[ge];W[gf];B[hg]
(;W[jf]
C[this is not correct; shd be at A; see var]LB[je:A];B[hi];W[id];B[ic];W[jc]
C[this is actually not a good cut];B[jb];W[kc];B[kb];W[lc];B[lb];W[gb];B[ha]
;W[ke];B[nb]
C[white can still be attacked, so this was not successful];W[ga];B[hb];W[eb]
C[necessary to live];B[kg]
C[this is a very nice flow for black];W[me];B[oe];W[od];B[ne];W[mf];B[og]
;W[jg];B[ho]
C[very severe move];W[hn];B[go];W[in];B[hk];W[fn];B[fo];W[eo];B[gn];W[gm]
;B[fm];W[hp];B[fn];W[kn]
C[black's attack on w is not successful and he gets nothing];B[db];W[ed]
;B[ki];W[lg];B[kh];W[ng];B[oh];W[nh];B[ni];W[oi];B[pf];W[qf];B[mi];W[nf]
;B[of];W[mh];B[pi];W[oj];B[qh]
(;W[li]
C[the wedge is no good; should play sente endgame at A and then begin to seal off center moyo with B]
LB[rp:A][mj:B];B[lj];W[lh];B[kk];W[mj]
C[this is white's losing move:  the kosumi at B is worth about 15 points and is sente as it threatens the black group. Also, a black atari at A is not sente.]
LB[mk:A][rp:B]
PL[W]
(;B[rp]
C[this is very big sente, worth about 15 points; this should be the winning move. ]
;W[lk];B[kj];W[ll]TR[rp]
C[even tho w has picked up points in the center, because of the marked move, b has taken the lead now.

]
;B[ln];W[gl];B[il];W[fl];B[el];W[dn];B[em];W[km];B[mn]
C[at this point it's clear that black is going to win; b is ahead by 12-15 points before komi. ]
;W[hm];B[cm];W[nm];B[rd]
C[this move is ok; doesn't lose points];W[pd];B[rb];W[re]
(;B[rn];W[ro];B[so];W[rm];B[sn];W[sm];B[sp];W[gj]TR[gl];B[gk];W[gi];B[ih]
;W[rh];B[ri];W[rg];B[qj];W[pk];B[bm];W[dc];B[cb];W[do];B[eq];W[ep];B[dm]
;W[hj];B[ij];W[ns];B[os];W[ms];B[oq];W[rk];B[jq];W[jr];B[pa];W[qa];B[oa]
;W[qb];B[nn];W[mm];B[jo];W[jn];B[ip];W[jp];B[eg];W[dg];B[ip];W[is];B[ks]
;W[jp];B[dd];W[ef];B[ip];W[ib];B[ia];W[jp];B[oo];W[po];B[ip];W[ja];B[ka]
;W[jp];B[om];W[ko];B[ol];W[lo];B[op];W[nl];B[ea];W[fa];B[da];W[ec];B[hs]
;W[aj];B[bh];W[mc];B[mb];W[gh];B[hh];W[jh];B[ji];W[ak]
C[b will win by 8 points after komi])
(;B[rg];W[qb];B[rc];W[ra]
C[w has been forced to play inside his own territory]))
(;B[mk];W[rp]))
(;W[rp];B[rq];W[mj]
C[game is about even at this point; still chances for both players]))
(;W[je];B[kd];W[ke];B[ld]
C[leaves aji at A]LB[jb:A];W[jb]))
(;B[hq];W[hp];B[ip]
(;W[gp])
(;W[gq];B[ho];W[gp];B[jq];W[io];B[jp];W[gr];B[er]
C[w is not totally alive so b can continue his attack])))
(;W[dq]
C[also possible]))

